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Theresa Alenghat, VMD, PhD
investigates central epigenomic pathways that regulate epithelial and immune cell homeostasis in the context of intestinal health and disease. The goal of her research is to provide insight into mechanisms underlying the host-commensal relationship and how this level of regulation affects the development of chronic diseases such as inflammatory bowel disease.
Assistant Professor, UC Department of Pediatrics
BS: Brown University, Providence, RI, 1999.
VMD: University of Pennsylvania, Philadelphia, PA, 2003.
PhD: University of Pennsylvania, Philadelphia, PA, 2007.
Residency: Anatomic Pathology, University of Pennsylvania, Philadelphia, PA.
Certification: Diplomate ACVP, 2011.
Alenghat T, Yu J, Lazar MA. The N-CoR complex enables chromatin remodeler SNF2H to enhance repression by thyroid hormone receptor. EMBO J. 2006 Sep 6;25(17):3966-74.
Alenghat T, Meyers K, Mullican SE, Leitner K, Adeniji-Adele A, Avila J, Bućan M, Ahima RS, Kaestner KH, Lazar MA. Nuclear receptor corepressor and histone deacetylase 3 govern circadian metabolic physiology. Nature. 2008 Dec 18;456(7224): 997-1000.
Alenghat T, Lazar MA. Nuclear receptor corepressors and metabolism. Nuclear Receptor Coregulators and Human Disease, R. Kumar and B.W. O’Malley (Eds). World Scientific Publishing Company. 2008 357-82.
Feng D, Liu T, Sun Z, Bugge A, Mullican SE, Alenghat T, Liu XS, Lazar MA. A circadian rhythm orchestrated by histone deacetylase 3 controls hepatic lipid metabolism. Science. 2011 Mar 11;331(6022):1315-9.
Monticelli LA, Sonnenberg GF, Abt MC, Alenghat T, Ziegler CG, Doering TA, Angelosanto JM, Laidlaw BJ, Yang CY, Sathaliyawala T, Kubota M, Turner D, Diamond JM, Goldrath AW, Farber DL, Collman RG, Wherry EJ, Artis D. Innate lymphoid cells promote lung-tissue homeostasis after infection with influenza virus. Nat Immunol. 2011 Nov;12(11):1045-54.
Mullican SE, Gaddis CA, Alenghat T, Nair MG, Giacomin PR, Everett LJ, Feng D, Steger DJ, Schug J, Artis D, Lazar MA. Histone deacetylase 3 is an epigenomic brake in macrophage alternative activation. Genes Dev. 2011 Dec 1;25(23):2480-8.
Sonnenberg GF, Monticelli LA, Alenghat T, Fung TC, Hutnick NA, Kunisawa J, Shibata N, Grunberg S, Sinha R, Zahm AM, Tardif MR, Sathaliyawala T, Kubota M, Farber DL, Collman RG, Shaked A, Fouser LA, Weiner DB, Tessier PA, Friedman JR, Kiyono H, Bushman FD, Chang K, Artis D. Innate lymphoid cells orchestrate anatomical containment of lymphoid-resident commensal bacteria and prevent systemic immune activation. Science. 2012 Jun 8;336(6086): 1321-5.
Abt MC, Osborne LC, Monticelli LA, Doering T, Alenghat T, Sonnenberg GF, Paley MA, Antenus M, Williams KL, Erikson J, Wherry EJ, Artis D. Commensal bacteria calibrate the activation threshold of innate antiviral immunity. Immunity. 2012 Jul 27;37(1):158-70.
Osborne LC, Joyce KL, Alenghat T, Sonnenberg GF, Giacomin PR, Du Y, Bergstrom KS, Vallance BA, Nair MG. Resistin-Like Molecule α Promotes Pathogenic Th17 Cell Responses and Bacterial-Induced Intestinal Inflammation. J Immunol. 2013 Mar 1;190(5):2292-300.
Alenghat T, Osborne LC, Saenz SA, Kobuley D, Ziegler CG, Mullican SE, Choi I, Grunberg S, Sinha R, Wynosky-Dolfi M, Snyder A, Giacomin PG, Joyce KL, Hoang TB, Bewtra M, Brodsky IE, Sonnenberg GF, Bushman FD, Won K, Lazar MA, Artis D. Histone Deacetylase 3 coordinates commensal-bacteria-dependent intestinal homeostasis. Nature. 2013 Dec 5;504(7478):153-7.
Julio Aliberti, MS, PhD
is focused on defining the mechanisms underlying the induction and regulation of immune responses to intracellular pathogens, including Toxoplasma gondii and Mycobacterium tuberculosis, microbes that cause an immense burden of morbidity and mortality in the world at large. The ultimate goal of this research program is the development of novel preventive and therapeutic approaches to these pathogens.
BSc: Biology, FFCL Barao de Maua, Ribeirao Preto, Brazil, 1994.
MS: Immunology, FMRP / USP, Ribeirao Preto, Brazil, 1996.
PhD: Immunology, FMRP / USP, Ribeirao Preto, Brazil, 1998.
Zoller EE, Lykens JE, Terrell CE, Aliberti J, Filipovich AH, Henson PM, Jordan MB. Hemophagocytosis causes a consumptive anemia of inflammation. J Exp Med. 2011 Jun 6;208(6):1203-14.
Lykens JE, Terrell CE, Zoller EE, Divanovic S, Trompette A, Karp CL, Aliberti J, Flick MJ, Jordan MB. Mice with a selective impairment of IFN-gamma signaling in macrophage lineage cells demonstrate the critical role of IFN-gamma-activated macrophages for the control of protozoan parasitic infections in vivo. J Immunol. 2010 Jan 15;184(2):877-85.
Machado FS, Aliberti J. Lipoxins as an immune-escape mechanism. Adv Exp Med Biol. 2009;666:78-87.
Machado FS, Aliberti J. Role of lipoxin in the modulation of immune response during infection. Int Immunopharmacol. 2008 Oct;8(10):1316-9. Machado FS, Esper L, Dias A, Madan R, Gu Y, Hildeman D, Serhan CN, Karp CL, Aliberti J. Native and aspirin-triggered lipoxins control innate immunity by inducing proteasomal degradation of TRAF6. J Exp Med. 2008 May 12;205(5):1077-86.
Yamauchi LM, Aliberti J, Baruffi MD, Portela RW, Rossi MA, Gazzinelli RT, Mineo JR, Silva JS. The binding of CCL2 to the surface of Trypanosoma cruzi induces chemo-attraction and morphogenesis. Microbes Infect. 2007;9:111-8.
Liu CH, Machado FS, Guo R, Nichols KE, Burks AW, Aliberti J, Zhong XP. Diacylglycerol kinase zeta regulates microbial recognition and host resistance to Toxoplasma gondii. J Exp Med. 2007;204:781-92.
Liu CH, Fan YT, Dias A, Esper L, Corn RA, Bafica A, Machado FS, Aliberti J. Cutting Edge: Dendritic cells are essential for in vivo interleukin-12 production and development of resistance against Toxoplasma gondii infection in mice. J. Immunol. 2006;177:31-5.
Arita M, Bianchini F, Aliberti J, Sher A, Chiang N, Hong S, Yang R, Petasis NA, Serhan C. Stereochemical assignment, anti-inflammatory properties, and receptor for the omega-3 lipid mediator resolving E1. J. Exp. Med. 2005;201:713-22.
Bafica A, Scanga C, Serhan C, Machado F, White S, Sher A, Aliberti J. Host control of Mycobacterium tuberculosis is regulated by 5-lipoxygenase-dependent lipoxin production. J. Clin. Invest. 2005;115:1601-6.
Artem Barski, PhD
Epigenetics; epigenomics; immunology; T cell memory
Visit the Barski Lab
Artem Barski, PhD, is interested in epigenetic and transcriptional regulation of gene expression. During his post-doctoral training in Keji Zhao lab at NIH, Dr. Barski took part in the development of ChIP-Seq, a revolutionary method that combines ChIP with the next-generation sequencing. ChIP-Seq allows genome-wide mapping of chromatin modifications and transcription factor binding sites with resolution and sensitivity far exceeding older methods. Together with his NIH colleagues Dr. Barski used this approach to map more than 40 chromatin modifications in human T cells, which fundamentally improved the understanding of epigenetic regulation of transcription. Dr. Barski has since been using ChIP-Seq and other sequencing-based genome-wide methods to understand the role of chromatin modifications in gene regulation. His most recent work includes investigation of chromatin regulation of genes transcribed by RNA Polymerase III and the discovery of gene poising in T cells.
Since his arrival to Cincinnati Children’s Hospital Medical Center in 2011, Dr. Barski is utilizing ChIP-Seq, RNA-Seq and other cutting-edge approaches to understand epigenetic basis of T cell activation, memory and tolerance.
Barski A, Chepelev I, Liko D, Cuddapah S, Fleming AB, Birch J, Cui K, White RJ, Zhao K. Pol II and its associated epigenetic marks are present at Pol III-transcribed noncoding RNA genes. Nat Struct Mol Biol. 2010 May;17(5):629-34. Cuddapah S, Barski A, Zhao K. Epigenomics of T cell activation, differentiation, and memory. Curr Opin Immunol. 2010 Jun;22(3):341-7.
Cuddapah S, Barski A, Cui K, Schones DE, Wang Z, Wei G, Zhao K. Native chromatin preparation and Illumina/Solexa library construction. Cold Spring Harb Protoc. 2009 Jun;2009(6):pdb.prot5237. Barski A, Jothi R, Cuddapah S, Cui K, Roh TY, Schones DE, Zhao K. Chromatin poises miRNA- and protein-coding genes for expression. Genome Res. 2009 Oct;19(10):1742-51
Barski A, Zhao K. Genomic location analysis by ChIP-Seq. J Cell Biochem. 2009 May 1;107(1):11-8. Jothi R, Cuddapah S, Barski A, Cui K, Zhao K. Genome-wide identification of in vivo protein-DNA binding sites from ChIP-Seq data. Nucleic Acids Res. 2008 Sep;36(16):5221-31. Wang Z, Zang C, Rosenfeld JA, Schones DE, Barski A, Cuddapah S, Cui K, Roh TY, Peng W, Zhang MQ, Zhao K. Combinatorial patterns of histone acetylations and methylations in the human genome. Nat Genet. 2008 Jul;40(7):897-903 Schones DE, Cui K, Cuddapah S, Roh TY, Barski A, Wang Z, Wei G, Zhao K. Dynamic regulation of nucleosome positioning in the human genome. Cell. 2008 Mar 7;132(5):887-98. Barski A, Cuddapah S, Cui K, Roh TY, Schones DE, Wang Z, Wei G, Chepelev I, Zhao K. High-resolution profiling of histone methylations in the human genome. Cell. 2007 May 18;129(4):823-37. Barski A, Frenkel B. ChIP Display: novel method for identification of genomic targets of transcription factors. Nucleic Acids Res. 2004 Jul 13;32(12):e104.
Jorge A. Bezerra, MD Medical Director, Pediatric Liver Care Center
Medical Director, Pediatric Liver Care Center
Professor, UC Department of Pediatrics
Jorge A. Bezerra, MD, joined the Cincinnati Children's Hospital Medical Center Division of Gastroenterology, Hepatology and Nutrition in 1990, when he began his fellowship training in pediatric gastroenterology and nutrition and graduated in 1993.
From 1992-1994, Dr. Bezerra was a research scholar in the Division of Basic Sciences. He was appointed to the division in 1994 as an assistant professor of pediatrics.
Dr. Bezerra completed his residency in pediatrics at the University of Arizona in Tucson, Arizona.
Dr. Bezerra has an active research career with his primary interests in molecular control of liver regeneration, biliary atresia, and genetic basis of intrahepatic cholestasis.
In addition to his research work, Dr. Bezerra is an active clinician for the outpatient GI clinical service and the inpatient liver service.
MD: Federal University Rio Grande Norte, Natal, Brazil, 1984
Residency: University of Arizona, Tuscon, AZ, 1989
Fellowship: Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH, 1994
Certification: Pediatrics, Pediatric Gastroenterology, Hepatology and Nutrition
Bezerra JA. Biliary atresia in Brazil: where we are and where we are going. J Pediatr (Rio J). 2010 Nov-Dec;86(6):445-7. Moyer K, Kaimal V, Pacheco C, Mourya R, Xu H, Shivakumar P, Chakraborty R, Rao M, Magee JC, Bove K, Aronow BJ, Jegga AG, Bezerra JA. Staging of biliary atresia at diagnosis by molecular profiling of the liver. Genome Med. 2010 May 13;2(5):33.
Kumar Mohanty S, Ivantes CA, Mourya R, Pacheco C, Bezerra JA. Macrophages are targeted by rotavirus in experimental biliary atresia and induce neutrophil chemotaxis via Mip2/Cxcl2. Pediatr Res. 2010 Jan 6. Shivakumar P, Sabla GE, Whitington P, Chougnet CA, Bezerra JA. Neonatal NK cells target the mouse duct epithelium via Nkg2d and drive tissue-specific injury in experimental biliary atresia. J Clin Invest. 2009 Aug;119(8):2281-90. Shanmukhappa K, Matte U, Degen JL, Bezerra JA. Plasmin-mediated proteolysis is required for hepatocyte growth factor activation during liver repair. J Biol Chem. 2009 May 8;284(19):12917-23. Erickson N, Mohanty SK, Shivakumar P, Sabla G, Chakraborty R, Bezerra JA. Temporal-spatial activation of apoptosis and epithelial injury in murine experimental biliary atresia. Hepatology. 2008 May;47(5):1567-77. Shivakumar P, Sabla G, Mohanty S, McNeal M, Ward R, Stringer K, Caldwell C, Chougnet C, Bezerra JA. Effector role of neonatal hepatic CD8+ lymphocytes in epithelial injury and autoimmunity in experimental biliary atresia. Gastroenterology. 2007 Jul;133(1):268-77. Liu C, Aronow BJ, Jegga AG, Wang N, Miethke A, Mourya R, Bezerra JA. Novel resequencing chip customized to diagnose mutations in patients with inherited syndromes of intrahepatic cholestasis. Gastroenterology. 2007 Jan;132(1):119-26. Campbell KM, Arya G, Ryckman FC, Alonso M, Tiao G, Balistreri WF, Bezerra JA. High prevalence of alpha-1-antitrypsin heterozygosity in children with chronic liver disease. J Pediatr Gastroenterol Nutr. 2007 Jan;44(1):99-103. Shanmukhappa K, Sabla GE, Degen JL, Bezerra JA. Urokinase-type plasminogen activator supports liver repair independent of its cellular receptor. BMC Gastroenterol. 2006 Nov 29;6:40.
Jose A. Cancelas Perez, MD, PhD Division Director of Research, Hoxworth Blood Center
Division Director of Research, Hoxworth Blood Center
Deputy Director, Hoxworth Blood Center
Director, Research Flow Cytometry Core
Leader, Stem Cell Program
Medical Director of Cellular Therapies, Hoxworth Blood Center
Associate Professor, UC Department of Pediatrics
Hematopoietic stem cell proliferation and differentiation
Visit the Cancelas Lab.
MD: Autonomous University of Madrid, Spain, 1989.
Residency: Hematology and Hematotherapy, University of Alcala de Henares, Madrid, Spain, 1993.
PhD: Faculty of Medicine, University of Alcala de Henares, Madrid, Spain, 1996.
Dumont LJ*, Cancelas JA*, Graminske S, Friedman KD, Vassallo RR, Whitley PH, Rugg N, Dumont DF, Herschel L, Siegal AH, Szczepiorkowski ZM, Fender L, Razatos A. In vitro and in vivo quality of leukocyte-reduced apheresis platelets stored in a new platelet additive solution. Transfusion. 2012. (*both authors contributed equally).
Prada CE, Jousma E, Rizvi TA, Wu J, Dunn RS, Mayes DA, Cancelas JA, Dombi E, Kim MO, West BL, Bollag G, Ratner N. Neurofibroma-associated macrophages play roles in tumor growth and response to pharmacological inhibition. Acta Neuropathol. 2013 Jan;125(1):159-68.
Dumont LJ, Cancelas J, Dumont DF, Siegel AH, Szczepiorkowski ZM, Rugg R, Pratt PG, Worsham DN, Hartman EL, Dunn SK, O’Leary M, Ransom JH, Michael RA, Macdonald VW. A randomized controlled trial evaluating recovery and survival of 6% dimethyl sulfoxide-frozen autologous platelets in healthy volunteers. Transfusion. 2013 Jan;53(1):128-37.
Taniguchi Ishikawa E, Cancelas JA. Lack of communication rusts and ages stem cells. Cell Cycle. 2012 Sep 1;11(17):3149-3150.
Geiger H, Pawar SA, Kerschen EJ, Nattamai KJ, Hernandez I, Liang HP, Fernández JA, Cancelas JA, Ryan MA, Kustikova O, Schambach A, Fu Q, Wang J, Fink LM, Petersen KU, Zhou D, Griffin JH, Baum C, Weiler H, Hauer-Jensen M. Pharmacological targeting of the thrombomodulin-activated protein C pathway mitigates radiation toxicity. Nat Med. 2012 Jul;18(7):1123-9.
Chang KH, Sanchez-Aguilera A, Shen S, Sengupta A, Madhu MN, Ficker AM, Dunn SK, Kuenzi AM, Anrett JL, Santho RA, Agirre X, Perentesis JP, Deininger MW, Zheng Y, Bustelo XR, Williams DA, Cancelas JA. Vav3 collaborates with p190-BCR-ABL in lymphoid progenitor leukemogenesis, proliferation and survival. Blood. 2012 Jul 26;120(4):800-11.
Taniguchi Ishikawa E, Gonzalez-Nieto D, Ghiaur G, Dunn SK, Ficker AM, Murali B, Madhu M, Gutstein DE, Fishman GI, Barrio LC, Cancelas JA. Connexin-43 prevents hematopoietic stem cell senescence through transfer of reactive oxygen species to bone marrow stromal cells. Proc Natl Acad Sci USA. 2012 Jun 5;109(23):9071-6.
Konstantinidis DG, Pushkaran S, Johnson JF, Cancelas JA, Manganaris S, Harris CE, Williams DA, Zheng Y, Kalfa TA. Signaling and cytoskeletal requirements in erythroblast enucleation. Blood. 2012 Jun 21;119(25):6118-27.
Gonzalez-Nieto D, Li L, Köhler A, Ghiaur G, Ishikawa E, Sengupta A, Madhu M, Arnett J, Santho R, Dunn S, Fishman G, Gutstein D, Civitelli R, Barrio L, Gunzer M, Cancelas J. Connexin-43 in the osteogenic BM niche regulates its cellular composition and the bidirectional traffic of hematopoietic stem cells and progenitors. Blood. 2012 May 31;119(22):5144-54.
Sengupta A, Ficker A, Dunn S, Madhu M, Cancelas JA. Bmi1 reprograms chronic myelogenous leukemia B-lymphoid progenitors to become B-ALL-initiating cells. Blood. 2012 Jan 12;119(2):494-502.
Progenitor Cell Biology Consortium Administrative Coordinating Center, NHLBI/ Subaward through Univ. Maryland. Co-Director. (Cincinnati Cell Char Core). Sep 2010 – Aug 2016. #U01 HL099997.
Rational Design of a Vav/Rac Inhibitor as a New Therapy for High-Risk B-ALL. Principal Investigator. Leukemia & Lymphoma Society of North America. Oct 2012 – Sep 2015.
Cincinnati Excellence in Molecular Hematology: Cell Analysis and Sorting Core, NIH/NIDDK. Co-investigator. (Flow Cytometry Core Co-PI). Sep 2010 – Jun 2015. #P30DK090971-01.
Claire A. Chougnet, PhD
DPharm:Université Paris XI, Paris, France, 1980.
CES (French specialized degrees; clinical biologist): Immunology, Hematology, Bacteriology-Virology, Parasitology, 1984.
PhD: Université Paris V, 1991.
Lages CS, Lewkowich I, Sproles A, Wills-Karp M, Chougnet C. Partial restoration of T-cell function in aged mice by in vitro blockade of the PD-1/ PD-L1 pathway. Aging Cell. 2010 Oct;9(5):785-98. doi: 10.1111/j.1474-9726.2010.00611.x. Miethke AG, Saxena V, Shivakumar P, Sabla GE, Simmons J, Chougnet CA. Post-natal paucity of regulatory T cells and control of NK cell activation in experimental biliary atresia. J Hepatol. 2010 May;52(5):718-26. Presicce P, Moreno-Fernandez ME, Lages CS, Orsborn KI, Chougnet CA. Association of two clones allows for optimal detection of human FOXP3. Cytometry A. 2010 Jun;77(6):571-9. Moreno-Fernandez ME, Zapata W, Blackard JT, Franchini G, Chougnet CA. Human regulatory T cells are targets for human immunodeficiency Virus (HIV) infection, and their susceptibility differs depending on the HIV type 1 strain. J Virol. 2009 Dec;83(24):12925-33.
Shivakumar P, Sabla GE, Whitington P, Chougnet CA, Bezerra JA. Neonatal NK cells target the duct epithelium via Nkg2d and drive the tissue-specific injury in biliary atresia. J Clin Invest. 2009 Aug;119(8)2281-90.
Nyakeriga AM, Fichtenbaum CJ, Goebel J, Nicolaou SA, Conforti L, Chougnet CA. Engagement of the CD4 receptor affects the redistribution of lck to the immunological synapse in primary T cells: implications for T cell activation during HIV-1 infection. J Virol. 2009 Feb;83(3):1193-200.
Boasso A, Shearer GM, Chougnet C. Immune dysregulation in HIV infection: know it, fix it, prevent it? J Intern Med. 2009, 265(1):78-96. Review.
Lages CS, Suffia I, Velilla P, Huang B, Warshaw G, Hildeman D, Belkaid Y, Chougnet C. Functional regulatory T cells accumulate in aged hosts and promote reactivation of chronic infectious disease reactivation. J Immunol. 2008;181(3):1835-48.
Velilla PA, Shata MT, Lages CS, Ying J, Fichtenbaum CJ, Chougnet C. Effect of intrauterine HIV-1 exposure on the frequency and phenotype of uninfected newborns’ dendritic cells. Clin Immunol. 2008;126:243-50.
Li S, Gowans EJ, Chougnet C, Plebanski M, Dittmer U. Natural regulatory T cells and persistent viral infection. J Virol. 2008;82:21-30. Review.
Jay L. Degen, PhD
studies the mechanisms by which circulating and cell-associated hemostatic factors contribute to development, tissue reorganization, inflammatory processes and disease. He also focuses on defining the regulatory pathways by which thrombin and thrombin targets contribute to cancer biology, inflammatory joint disease, neuroinflammatory disease, bacterial virulence/host defense, and immunological disorders.
Molecular genetics of plasminogen activation in development, hemostasis, and tumor progression; molecular genetics and biological role of plasminogen activation in development, hemostasis, wound repair, and disease
Jay L. Degen, PhD, is studying the regulation and biological roles of urokinase-type plasminogen activator (uPA) and tissue-type plasminogen activator (tPA), the two mammalian enzymes that convert plasminogen to the active serine protease, plasmin.
The PA/plasmin system of proteases is of particular interest because of its apparent dual function in the lysis of vascular fibrin clots (fibrinolysis) and the degradation of extracellular matrix in tissue remodeling and cell migration events.
Over the last few years, Dr. Degen's lab has generated and characterized gene-targeted mouse lines with deficits in the factors that are the foundation of the coagulation and fibrinolytic cascades, including fibrinogen-, plasminogen-, plasminogen activator-, and plasminogen activator receptor-deficient mouse lines.
These unique experimental animals are being intensively analyzed with regard to a wide range of phenotypic properties, including hemostasis, wound healing, angiogenesis and tumor biology.
Senad Divanovic, PhD
investigates the molecular mechanisms underlying the regulation of innate immune signaling and inflammation in: (a) development and progression of obesity; (b) development and progression of non-alcoholic fatty liver disease; and (b) induction of preterm birth. These studies, range from reductive analysis of TLR ligand signaling and challenge to the role of IL-17 axis to diverse experimental models of obesity and infection.
Innate immune responses; obesity; NAFLD; preterm birth
BA: DePauw University, Greencastle, IN, 1998.
MS: Oklahoma State University, Stillwater, OK, 2000. PhD: University of Cincinnati, Cincinnati, OH, 2005. Post Doc: Cincinnati Children’s Hospital Medical Center, 2010
Allen JL, Flick LM, Divanovic S, Jackson SW, Bram R, Rawlings D, Finkelman FD, Karp CL. Cutting Edge: Regulation of TLR4-driven B cell proliferation by RP105 is not B cell-autonomous. J Immunol. 2012;188:2065.
Korfhagen TR, Kitzmiller J, Chen G, Sridharan A, Haitchi HM, Hegde RS, Divanovic S, Karp CL, Whitsett JA. SAM-pointed domain ETS factor mediates epithelial cell-intrinsic innate immune signaling during airway mucous metaplasia. PNAS. 2012;109:16630.
Divanovic S, Sawtell NM, Trompette A, Warning JI, Dias A, Cooper AM, Yap GS, Arditi M, Shimada K, DuHadaway JB, Prendergast GC, Basaraba RJ, Mellor AL, Munn DH, Aliberti J, Karp CL. Opposing biological functions of tryptophan catabolizing enzymes during intracellular infection. J Infect Dis. 2012;205:152-61.
Divanovic S, Trompette A, Jamie I. Ashworth, Marepalli B. Rao, Karp CL. Therapeutic enhancement of protective immunity during experimental Leishmania major infection. PLoS Neglected Tropical Dis. 2011;5:e1316. Sheridan R, Lampe K, Shanmukhappa SK, Putnam P, Keddache M, Divanovic S, Bezerra J, Hoebe K. Lampe1: an ENU-germline mutation causing spontaneous hepatosteatosis identified through targeted exon-enrichment and next-generation sequencing. PLoS One. 2011;6:e21979. Trompette A, Divanovic S, Visintin A, Blanchard C, Hegde RS, Madan R, Torne PS, Wills-Karp M, Gioannini TL, Weiss JP, Karp CL. Allergenicity resulting from functional mimicry of a Toll-like receptor complex protein. Nature. 2009;457:585-8.
Divanovic S, Trompette A, Petiniot LK, Allen JL, Flick LM, Belkaid Y, Madan R, Haky JJ, Karp CL. Regulation of TLR4 signaling and the host interface with pathogens and danger: the role of RP105. J Leukocyte Biol. 2007;82:265-271. Divanovic S, Trompette A, Atabani SF, Madan R, Golenbock DT, Visintin A, Finberg RW, Tarakhovsky A, Vogel SN, Belkaid Y, Kurt-Jones EA, Karp CL. Inhibition of TLR4/MD-2 signaling by RP105/MD-1. J Endotoxin Res. 2005;11:363-8. Divanovic S, Trompette A, Atabani SF, Madan R, Golenbock DT, Visintin A, Finberg RW, Tarakhovsky A, Vogel SN, Belkaid Y, Kurt-Jones EA, Karp CL. Negative regulation of Toll-like receptor 4 signaling by the Toll-like receptor homolog RP105. Nature Immunol. 2005;6:571-8.
Divanovic S, Lai ACK. Cytokine induction in human cord blood lymphocytes after pulsing with UV-inactivated influenza viruses. Immunology Lett. 2004;94:201-7.
Marie-Dominique Filippi, PhD
Dr. Filippi is particularly interested in dissecting the molecular mechanism of hematopoietic cell migration, including neutrophils and hematopoietic stem cells in physiological settings. Migration is a critical function of hematopoietic cell in which actin cytoskeleton reorganization plays a central role. Because hematopoietic cells are utilized for the therapy of multiple blood diseases and neutrophils are responsible for maintaining an immunocompetence status, understanding the molecular mechanism of normal hematopoietic cell functions is of potential therapeutic importance. The small RHO GTPase family, members of the Ras superfamily, including Rac, RHO and CDC42, play key roles in regulating many of these functions. During her post-doc in the laboratory of Dr. David Williams, they have demonstrated that two highly related proteins, Rac1 and Rac2, of the small Rho GTPase family, have distinct functions in the control of hematopoietic cell functions. In particular in neutrophils, they have shown that both Rac1 and Rac2 regulate cell migration but with distinct mechanism (Gu and Filippi et al, Science 2003) both in vitro and in vivo. In addition to this work, they have dissected the sequence/determinant specificity of Rac2 versus Rac1 functions in neutrophils and demonstrated that Rac2 controls its functions, at least in part, by distinct subcellular distributions of these GTPases (Tao et al, Blood 2002, Filippi et al, Nat Immunol 2004), highlighting one important mechanism controlling cellular functions. Dr. Filippi's laboratory, in collaboration Dr. Yi Zheng, is now focused on determining the role of CDC42 and RhoA in neutrophil migration and in determining specifically the role of RhoA in hematopoietic stem cell migration and proliferation using gene targeted knock out mice for CDC42 and RhoA and their respective regulator CDC42GAP and 190RhoGAP. These studies will use in vitro and in vivo assays of cell migration as well as immunofluorescence microscopy to study cytoskeleton rearrangement associated with cell migration. The long term goal of these studies is to identify new molecular targets of potential therapeutic importance.
Visit the Filippi Lab.
Mulloy JC, Cancelas JA, Filippi MD, Kalfa TA, Guo F, Zheng Y. Rho GTPases in hematopoiesis and hemopathies. Blood. 2010 Feb 4;115(5):936-47. Szczur K, Zheng Y, Filippi MD. The small Rho GTPase Cdc42 regulates neutrophil polarity via CD11b integrin signaling. Blood. 2009 Nov 12;114(20):4527-37. Xu H, Eleswarapu S, Geiger H, Szczur K, Daria D, Zheng Y, Settleman J, Srour EF, Williams DA, Filippi MD. Loss of the Rho GTPase activating protein p190-B enhances hematopoietic stem cell engraftment potential. Blood. 2009 Oct 22;114(17):3557-66.Gu Y, Harley IT, Henderson LB, Aronow BJ, Vietor I, Huber LA, Harley JB, Kilpatrick JR, Langefeld CD, Williams AH, Jegga AG, Chen J, Wills-Karp M, Arshad SH, Ewart SL, Thio CL, Flick LM, Filippi MD, Grimes HL, Drumm ML, Cutting GR, Knowles MR, Karp CL. Identification of IFRD1 as a modifier gene for cystic fibrosis lung disease. Nature. 2009 Apr 23;458(7241):1039-42.
Monk KR, Wu J, Williams JP, Finney BA, Fitzgerald ME, Filippi MD, Ratner N. Mast cells can contribute to axon-glial dissociation and fibrosis in peripheral nerve. Neuron Glia Biol. 2007 Aug;3(3):233-44.
Daria D, Filippi MD, Knudsen ES, Faccio R, Li Z, Kalfa T, Geiger H. The retinoblastoma tumor suppressor is a critical intrinsic regulator for hematopoietic stem and progenitor cells under stress. Blood. 2008 Feb 15;111(4):1894-902. Uchida K, Beck DC, Yamamoto T, Berclaz PY, Abe S, Staudt MK, Carey BC, Filippi MD, Wert SE, Denson LA, Puchalski JT, Hauck DM, Trapnell BC. GM-CSF autoantibodies and neutrophil dysfunction in pulmonary alveolar proteinosis. N Engl J Med. 2007 Feb 8;356(6):567-79.Filippi MD, Szczur K, Harris CE, Berclaz PY. Rho GTPase Rac1 is critical for neutrophil migration into the lung. Blood. 2007 Feb 1;109(3):1257-64. Szczur K, Xu H, Atkinson S, Zheng Y, Filippi MD. Rho GTPase CDC42 regulates directionality and random movement via distinct MAPK pathways in neutrophils. Blood. 2006 Dec 15;108(13):4205-13.Wang L, Yang L, Filippi MD, Williams DA, Zheng Y. Genetic deletion of Cdc42GAP reveals a role of Cdc42 in erythropoiesis and hematopoietic stem/progenitor cell survival, adhesion, and engraftment. Blood. 2006 Jan 1;107(1):98-105.
Fred D. Finkelman, MD
uses mouse models to study the roles of antibodies and cytokines in health and disease. Particular interests include allergic disorders, parasitic worm infections, and antibody-mediated disorders.
Professor, UC Department of Internal Medicine
UC Department of Pediatrics
Internal medicine; Rheumatology
Dr. Finkelman's group’s contributions to immunology and medicine have focused on the use of mouse models of normal and abnormal immune function. They have included the initial demonstrations that: 1) IL-4 is required for induction of IgE responses in vivo, IFN-γ promotes the induction of IgG2a responses in vivo, and IL-12 suppresses IgE responses in vivo; 2) IL-4, IL-13, IL-4Rα, and Stat6 are required for host protection against intestinal worms, and protect predominantly through effects on intestinal epithelial cells, including induction of RELMβ; 3) inflammatory stimuli are required to induce dendritic cells to present antigen in a stimulatory, rather than a tolerogenic fashion; 4) complement and macrophages are required for development of murine transfusion-related acute lung injury; 5) rapid desensitization with anti-FcεRIα monoclonal antibody is a safe and effective way to rapidly suppress IgE-mediated disorders; and 6) immunoglobulin isotypes that are relatively ineffective in the induction of antibody effector mechanisms protect against inflammatory disease.
In addition, his group has developed three important in vivo techniques: 1) the use of anti-IgD antibodies to stimulate polyclonal B cell and T cell activation and antibody secretion; 2) the use of cytokine/anti-cytokine monoclonal antibody complexes to induce long-lasting increases in cytokine effects; and 3) the in vivo cytokine capture assay for measurement of in vivo cytokine secretion.
BA: Queens College, Queens, NY, 1967.
MD: Yale University School of Medicine, New Haven, CN, 1971
Residency: Internal Medicine, Yale-New Haven Hospital, New Haven, CN.
Fellowship: Laboratory of Immunology, NIAID, NIH, Bethesda, MD.
Fellowship: Rheumatology, University of Texas-Southwestern Medical School, Dallas, TX.
Certification: Internal Medicine, 1976; Rheumatology, 1980.
Strait RT, Posgai MT, Mahler A, Barasa N, Jacob CO, Köhl J, Ehlers M, Stringer K, Shanmukappa SK, Witte D, Hossain MM, Khodoun M, Herr AB, Finkelman FD. IgG1 protects against renal disease in a mouse model of cryoglobulinemia. Nature. 2014.
Khodoun M, Kucuk ZY, Strait RT, Krishnamurthy D, Janek K, Lewkowich IP, Morris SE, Finkelman FD. Rapid polyclonal desensitization with antibodies to IgE and FcεRIα. J Allergy Clin. Immunol. 2013 133(6):1555-64.
Strait RT, Hicks W, Barasa N, Mahler A, Khodoun M, Köhl J, Stringer K, Witte D, Van Rooijen N, Susskind BM, Finkelman FD. MHC class I-specific antibody binding to nonhematopoietic cells drives complement activation to induce transfusion related acute lung injury in mice. J Exp Med. 2011 208(12):2525-44.
Herbert, DR, Yang J-Q, Hogan SP, Groschwitz K, Khodoun M, Munitz A, Orekov T, Perkins C, Wang Q, Brombacher F, Urban JF Jr, Rothenberg ME, Finkelman FD. Intestinal epithelial cell secretion of RELMβ protects against gastrointestinal worm infection. J Exp Med. 2009 206(13):2947-57.
Strait RT, Morris SC, Finkelman FD. IgG blocking antibodies inhibit IgE-mediated anaphylaxis in vivo through both antigen interception and FcγRIIb crosslinking. J Clin Invest. 2006 116(3):833-41.
Morris SC, Madden KB, Adamovicz JJ, Gause WC, Hubbard BR, Gately MK, Finkelman FD. Effects of Interleukin-12 on in vivo cytokine gene expression and Ig isotype selection. J Immunol. 1994 152(3):1047-56.
Urban JF Jr, Katona IM, Paul WE, Finkelman FD. Interleukin 4 is important in protective immunity to a gastrointestinal nematode infection in mice. Proc Natl Acad Sci. USA. 1991 88(13):5513-7.
Finkelman FD, Lees A, Birnbaum R, Gause WC, Morris SC. Dendritic cells can present antigen in vivo in a tolerogenic or an immunogenic fashion. J Immunol. 1996 157(4):1406-14.
Urban JF Jr, Noben-Trauth N, Donaldson DD, Madden KB, Morris SC, Collins M, Finkelman FD. IL-13, IL-4Rα, and Stat6 are required for the expulsion of the gastrointestinal nematode parasite Nippostrongylus brasiliensis. Immunity. 1998 8(2):255-64.
Finkelman FD, Katona IM, Mosmann TR, Coffman RL. Interferon-γ regulates the isotypes of immunoglobulin secreted during in vivo humoral immune responses. J Immunol. 1988 140(4):1022-7.
Suppression of established IgE-mediated disease. Principal Investigator. United States Veterans Authority. Apr 2012 - Mar 2016.
Induction of food allergy in mice by allergen inhalation. Principal Investigator. DoD. Jul 2013 - Jun 2016.
Rapid suppression of food allergy with anti-FceRIa antibody. Principal Investigator. Food Allergy Research and Education. Jun 2014 - May 2017.
Human IgG-mediated anaphylaxis. Principal Investigator. National Institutes of Health/National Institute of Allergy and Infectious Diseases. Aug 2012 - Jul 2015. 1R21AI103816-01.
Allergenicity resulting from functional mimicry of the TLR complex. Principal Investigator. National Institutes of Health/National Institute of Allergy and Infectious Diseases. Mar 2010 - Feb 2015. 5R01AI088372-03.
Suppression of IgE-mediated disease by polyclonal rapid desensitization. Principal Investigator. National Institutes of Health/National Institute of Allergy and Infectious Diseases. Jul 2014 - Jun 2018. 1R01AI113162-01.
Matthew J. Flick, PhD
is working to understand how hemostatic factors in the blood that are responsible for clotting also drive inflammation in the context of infection and diseases such as arthritis and fatty liver disease.
Hemostatic factors and arthritis pathogenesis
Research Interests and Focus:
1. Activation of the coagulation system, including the central coagulation protease thrombin, is a prominent feature of both human rheumatoid arthritis and experimental inflammatory arthritis. The long-term goal of Dr. Flick's research program is to determine how thrombin drives inflammatory joint disease. The proposed work will fill significant gaps in the understanding of the interplay between the thrombin- fibrinogen axis and arthritic disease, and may provide the proof-of-principle for the use of novel "customized" thrombin mutants with selected substrate specificity to treat arthritis.
2. The pervasive gram-positive bacteria Staphylococcus aureus is a common pathogen that is the causative agent for a wide spectrum of diseases including skin infections, pneumonia, bacteremia, toxic-shock syndrome and sepsis. Notably, this pathogen has evolved and maintained a number of proteins that directly engage the host hemostatic system, including factors that directly interact with the host coagulation factor fibrinogen. The long-term goal of his research program is to understand how bacterial derived proteins interact with host factors to promote bacterial virulence in the context of blood-born infections. This work will provide novel insight into the molecular pathways by which S. aureus invades and disseminates within host tissues and may shed light into novel strategies for eliminating this potentially devastating infectious agent.
3. Obesity is a worldwide epidemic linked to numerous disease sequelae, including non-alcoholic fatty liver disease (NAFLD). This spectrum disorder can progress from the simple accumulation of triglycerides within hepatocytes (i.e., steatosis), to inflammatory steatohepatitis, to organ failure secondary to irreversible liver fibrosis and cirrhosis. Dysregulation of the coagulation system has been documented in both patients with fatty liver disease and animal models of NAFLD, but any contribution to disease progression has remained largely undefined. Using a murine model of high fat diet (HFD)-induced NAFLD, they are testing the hypothesis that thrombin activity and fibrin deposition drive local inflammatory events promoting the progression of steatosis and steatohepatitis. Comparative studies of wild-type mice with genetically imposed deficiencies or functional alterations in prothrombin, fibrinogen and other associated coagulation factor components suggests that the thrombin-fibrinogen axis influences NAFLD pathogenesis by controlling local inflammatory processes that drive steatosis and by an unanticipated and unknown mechanism tying fibrin(ogen) to HFD-induced weight gain/obesity. Their research has far-reaching implications not only for the treatment and prevention of fatty liver disease, but also for all the downstream sequelae of obesity and even the development of diet-mediated weight gain itself.
BS: Xavier University, Cincinnati, OH.
PhD: Purdue University, West Lafayette, IN.
Post-doctoral Fellow: Cincinnati Children’s Hospital and Medical Center, Division of Developmental Biology, Cincinnati, OH.
Flick MJ, Du X, Prasad JM, Raghu H, Palumbo JS, Smeds E, Höök M, Degen JL. Genetic elimination of the binding motif on fibrinogen for the S. aureus virulence factor ClfA improves host survival in septicemia. Blood. 2013 Jan 8.
Sullivan BP, Kassel KM, Jone A, Flick MJ, Luyendyk JP. Fibrin(ogen)-independent role of plasminogen activators in acetaminophen-induced liver injury. American Journal of Pathology. 2012;180(6):2321-2329.
Qi X, Flick MJ, Frederick M, Chu Z, Mason R, DeLay M, Thornton S. Saposin C Coupled Lipid Nanovesicles Specifically Target Arthritic Mouse Joints for Optical Imaging of Disease Severity. PLoSOne. 2012;7(3):e33966.
Vidal B, Ardite E, Suelves M, Ruiz-Bonilla V, Janué A, Flick MJ, Degen JL, Serrano AL, Muñoz-Cánoves P. Amelioration of Duchenne muscular dystrophy in mdx mice by elimination of matrix-associated fibrin-driven inflammation coupled to the αMβ2 leukocyte integrin receptor. Human Molecular Genetics. 2012;21(9):1989-2004.
Horowitz NA, Blevins EA, Miller WM, Perry AR, Talmage KE, Mullins ES, Flick MJ, Queiroz KC, Shi K, Spek CA, Conway EM, Monia BP, Weiler H, Degen JL, Palumbo JS. Thrombomodulin is a determinant of metastasis through a mechanism linked to the thrombin binding domain but not the lectin-like domain. Blood. 2011 Jul 25.
Raghu H, Flick MJ. Targeting the Coagulation Factor Fibrinogen for Arthritis Therapy. Curr Pharm Biotechnol. 2011 Mar 14.
Flick MJ, Chauhan AK, Frederick M, Talmage KE, Kombrinck KW, Miller W, Mullins ES, Palumbo JS, Zheng X, Esmon NL, Esmon CT, Thornton S, Becker A, Pelc LA, Di Cera E, Wagner DD, Degen JL. The development of inflammatory joint disease is attenuated in mice expressing the anticoagulant prothrombin mutant W215A/E217A. Blood. 2011 Jun 9;117(23):6326-37.
Steinbrecher KA, Horowitz NA, Blevins EA, Barney KA, Shaw MA, Harmel-Laws E, Finkelman FD, Flick MJ, Pinkerton MD, Talmage KE, Kombrinck KW, Witte DP, Palumbo JS. Colitis-associated cancer is dependent on the interplay between the hemostatic and inflammatory systems and supported by integrin alpha(M)beta(2) engagement of fibrinogen. Cancer Res. 2010 Apr 1;70(7):2634-43.
Mullins ES, Kombrinck KW, Talmage KE, Shaw MA, Witte DP, Ullman JM, Degen SJ, Sun W, Flick MJ, Degen JL. Genetic elimination of prothrombin in adult mice is not compatible with survival and results in spontaneous hemorrhagic events in both heart and brain. Blood. 2009 Jan 15;113(3):696-704.
NIH, National Institute of Arthritis and Musculoskeletal and Skin Diseases Research. Director. Cincinnati Rheumatic Diseases Core Center. Aug 2011-Jun 2016. 2P30 AR47363.
Hemostatic factors and sickle cell disease. Co-investigator. NIH. Dec 2011-Nov 2016. R01 HLI12603.
Analysis of Staphylococcus Host Interactions. Co-investigator. NIH. Sep 2010-Aug 2015. R01 AI020662.
H. Leighton (Lee) Grimes, PhD Director, Cancer Pathology Program, Division of Experimental Hematology & Division of Pathology
Director, Cancer Pathology Program, Division of Experimental Hematology & Division of Pathology
Co-Leader, Program in Hematologic Malignancies of Cincinnati Children's Hospital Medical Center, Cancer and Blood Diseases Institute
Transcriptional control of hematopoiesis and cancer.
Visit the Grimes Lab.
The cloning and characterization of oncoproteins and tumor suppressors over the last 25 years has not only resulted in a greater understanding of the molecular mechanisms of transformation, but it has also provided a large set of therapeutic targets. Our lab is interested in the progression of a cell with a single genetic lesion to an invasive cancer with multiple genetic alterations. We focus on the Growth factor independence-1 (Gfi1) transcription factor, which is poorly oncogenic alone, but which potently collaborates with well known oncoproteins such as c-MYC. Gfi1 is the most frequently targeted gene in Moloney murine leukemia virus-induced tumors and induces tumor progression to cytokine-independent growth. In contrast, loss of Gfi1 in hematopoietic stem cells induces cell cycle progression and eventual bone marrow failure; implicating Gfi1 as a tumor suppressor in such cells. Gfi1 null mice have no mature neutrophils, and we have identified humans with Severe Congenital Neutropenia (SCN) and Non-Immune Chronic Idiopathic Neutropenia of Adults (NI-CINA) bearing mutations in Gfi1. Interestingly, such patients are at increased risk for the development of myelodysplastic syndromes and acute myeloid leukemia. We have recently generated the first mouse model of Severe Congenital Neutropenia through the expression of mutant Gfi1 proteins in primary murine hematopoietic cells. Moreover, we are utilizing mouse models of human cancer to assess the risk of Gfi1 mutant humans for the development of acute myeloid leukemia.
Phelan JD, Saba AI, Olsson A, Zeng H, Kosan C, Messer MS, Hildeman D, Aronow B, Möröy T, Grimes HL. Growth factor independent-1 maintains Notch1-dependent transcriptional programming of lymphoid precursors. PLoS Genetics. 2013;9(9):e1003713.
Khandanpour C*, Phelan JD*, Vassen L, Schutte J, Chen R, Horman SR, Gaudreau MC, Krongold J, Zhu J, Paul WE, Duhrsen U, Gottgens B, Grimes HL# Moroy T#. Growth factor independence 1 (Gfi1) antagonizes a p53-induced DNA damage response pathway in lymphoblastic leukemia. Cancer Cell. 2013 Feb 11;23(2):200-14. * equal first author, # shared corresponding author.
Meyer SE, Hasenstein JR, Baktula A, Velu CS, Xu Y, Wan H, Whitsett JA, Gilks CB, Grimes HL. Kruppel-like factor 5 is not required for K-RasG12D lung tumorigenesis, but represses ABCG2 expression and is associated with better disease-specific survival. Am J Pathol. 2010 Sep;177(3):1503-13.
Horman SR, Velu CS, Chaubey A, Bourdeau T, Zhu J, Paul WE, Gebelein B, Grimes HL. Gfi1 integrates progenitor versus granulocytic transcriptional programming. Blood. 2009 May 28;113(22):5466-75.
Velu CS, Baktula AM, Grimes HL. Gfi1 regulates miR-21 and miR-196b to control myelopoiesis. Blood. 2009 May 7;113(19):4720-8.
Horman SR, Velu CS, Chaubey A, Bourdeau T, Zhu J, Paul WE, Gebelein B, Grimes HL. Gfi1 integrates progenitor versus granulocytic transcriptional programming. Blood. 2009 May 28;113(22):5466-75.
Gu Y, Harley IT, Henderson LB, Aronow BJ, Vietor I, Huber LA, Harley JB, Kilpatrick JR, Langefeld CD, Williams AH, Jegga AG, Chen J, Wills-Karp M, Arshad SH, Ewart SL, Thio CL, Flick LM, Filippi MD, Grimes HL, Drumm ML, Cutting GR, Knowles MR, Karp CL. Identification of IFRD1 as a modifier gene for cystic fibrosis lung disease. Nature. 2009 Apr 23;458(7241):1039-42.
Li-Kroeger D, Witt LM, Grimes HL, Cook TA, Gebelein B. Hox and senseless antagonism functions as a molecular switch to regulate EGF secretion in the Drosophila PNS. Dev Cell. 2008 Aug;15(2):298-308.
Zarebski1 A, Velu CS, Baktula AM, Bourdeau T, Horman SR, Basu S, Bertolone SJ, Horwitz M, Hildeman DA, Trent JO, Grimes HL. The Human Severe Congenital Neutropenia-Associated Gfi1N382S Mutant Blocks Murine Granulopoiesis Through CSF1. Immunity. 2008 Mar;28(3):370-80.
Person RE, Li FQ, Duan Z, Benson KF, Wechsler J, Papadaki HA, Eliopoulos G, Kaufman C, Bertolone SJ, Nakamoto B, Papayannopoulou T, Grimes HL, Horwitz M. Gfi1 Proto-Oncogene Mutation Causes Human Neutropenia and Targets Neutrophil Elastase. Nature Genetics. 2003 March 1;30: 295 - 300.
John B. Harley, MD, PhD Director, CAGE
is a rheumatologist and biochemist with special clinical and research interests in the genetic etiology of inflammatory diseases. His experimental focus is the many genetic effects and environmental causes of systemic lupus erythematosus (SLE) and related inflammatory diseases. Through this work, nearly 50 genes are known and Epstein Barr virus has been identified to trigger the systemic autoimmunity of lupus. Dr. Harley also builds infrastructure with which to do high throughput genotyping, expression analysis, and epigenetics, which he makes available to his colleagues from around the world. In recent experiments, Dr. Harley organized the logistics of managing >18,000 subjects at >30,000 genetic markers, 3200 subjects at 1.2 million markers, and 10,000 subjects at 196,000 markers. Dr. Harley is committed to all of the steps between association detection through replication and toward identifying the possible functional genetic variants and to pursuing their biology.
Cobb BL, Fei Y, Jonsson R, Bolstad AI, Brun JG, Rischmueller M, Lester SE, Witte T, Illei G, Brennan M, Bowman S, Moser KL, Harley JB, Sawalha AH. Genetic association between methyl-CpG binding protein 2 (MECP2) and primary Sjögren’s syndrome. Ann Rheum Dis. 2010; 69(9): 1731-2.Kim-Howard X, Maiti AK, Anaya J-M, Bruner GR, Brown E, Merrill JT, Edberg JC, Petri MA, Reveille JD, Ramsey-Goldman R, Alarcon GS, Vyse TJ, Gilkeson G, Kimberly RP, James JA, Guthridge JM, Harley JB, Nath SK. ITGAM coding variant (rs1143679) influences the risk of renal disease, discoid rash, and immunologic manifestations in lupus patients with European ancestry. Ann Rheum Dis. 2010.Javierre BM, Fernandez AF, Richter J, Al-Shahrour F, Martin-Subero JI, Rodriguez-Ubreva J, Berdasco M, Fraga MF, O'Hanlon TP, Rider LG, Jacinto FV, Lopez-Longo FJ, Dopazo J, Forn M, Peinado MA, Carreno L, Sawalha AH, Harley JB, Siebert R, Esteller M, Miller FW, Ballestar E. Changes in the pattern of DNA methylation associate with twin discordance in systemic lupus erythematosus. Genome Res. 2010; 20(2):170-179. Harley JB, James JA. Everyone comes from somewhere: systemic lupus erythematosus and Epstein-Barr virus, induction of host interferon (INF) and humoral anti-EBNA1 immunity. Arthritis Rheum. 2010.\Bronson PG, Komorowski LK, Ramsay PP, May SL, Noble J, Lane JA, Thomson G, Claas FH, Seldin MF, Kelly JA, Harley JB, Moser KL, Gaffney PM, Behrens T, Criswell LA, Barcellos LF. Analysis of maternal-offspring HLA compatibility, parent-of-origin and noninherited effects for HLA-DRB1 in systemic lupus erythematosus. Arthritis Rheum. 2010.Heinlen LD, McClain MT, Ritterhouse LL, Bruner BF, Edgerton CC, Keith MP, James JA, Harley JB. 60kD Ro and nRNP A frequently initiate human lupus autoimmunity. PLoS ONE. 2010 5(3):e9599.
Sammalisto S, Hiekkalinna T, Schwander K, Kardia S, Weder AB, Rodriquez BL, Doria A, Kelly JA, Bruner GR, Harley JB, Redline S, Larkin EK, Patel SR, Ewan AJ, Weber JL, Perola M, Peltonen L. Genome-wide linkage screen for stature and body mass index in 3.032 families: evidence for sex-and population-specific genetic effects. Eur J Hum Genet. 2009 Jan 1;17(2):258-266.
Poole BD, Templeton AK, Guthridge JM, Brown EJ, Harley JB, James JA. Aberrant Epstein-Barr viral infection in systemic lupus erythematosus. Autoimmun Rev. 2009 Feb;8(4):337-42. Poole BD, Schneider RI, Guthridge JM, Velte CA, Reichlin M, Harley JB, James JA. Early targets of nuclear RNP humoral autoimmunity in human systemic lupus erythematosus. Arthritis Rheum. 2009 Feb 26; 60(3):848-859. Han S, Kim-Howard X, Deshmukh H, Kamatani Y, Viswanathan P, Guthridge JM, Thomas K, Kaufman KM, Ojwang J, Rojas-Villarraga A, Baca V, Orozco L, Rhodes B, Choi CB, Gregersen PK, Merrill JT, James JA, Gaffney PM, Moser KL, Jacob CO, Kimberly RP, Harley JB, Bae SC, Anaya JM, Alarcon-Riquelme ME, Matsuda K, Vyse TJ, Nath SK. Evaluation of imputation-based association in and around the Integrin-α-M (ITGAM) gene and replication of robust association between a non-synonymous functional variant within ITGAM and systemic lupus erythematosus (SLE). Hum Mol Genet. 2009 Mar 15;18(6):1171-80.
Andrew B. Herr, PhD
studies protein-protein interactions involved in immune receptor signaling and bacterial pathogenesis. His lab uses X-ray crystallography to solve the atomic structures of proteins along with techniques of biophysical chemistry to understand their interactions in solution. The goal is to understand the molecular basis for autoimmune responses and recurrent bacterial infections, and to develop new therapeutic applications.
Structural biology and biophysics of antibodies; immune receptors; bacterial surface proteins
Andrew Herr, PhD, is an associate professor in the Division of Immunobiology and Center for Systems Immunology, with an affiliate appointment in the Division of Infectious Diseases. Dr. Herr completed his thesis work in molecular biophysics from Washington University in St. Louis, and completed his postdoctoral work in structural immunology at the California Institute of Technology as a Damon Runyon Research Fellow. He was recruited to the University of Cincinnati College of Medicine as an Ohio Eminent Scholar in Structural Biology before moving to Cincinnati Children’s Hospital.
Dr. Herr solved the first structure of a human IgA1 antibody bound to its cognate Fc receptor while at Caltech, and his lab has continued to study antibodies and immune receptors implicated in autoimmune diseases. In addition, the lab is studying a family of related collagen-specific immune receptors such as glycoprotein VI, which activates platelets upon exposure to fibrous collagen. The Herr lab also studies mechanisms of bacterial pathogenesis. Specifically, they discovered the zinc-dependent mechanism of intercellular adhesion in bacterial biofilms formed by Staphylococcus epidermidis and S. aureus. Biofilms are specialized bacterial colonies that are highly resistant to antibiotics and immune responses, so developing novel therapies to prevent biofilm formation is of high importance.
Before joining the faculty at Cincinnati Children’s, Dr. Herr was an Ohio Eminent Scholar in Structural Biology at the University of Cincinnati College of Medicine and served as an associate director of the Cincinnati Medical Scientist (MD/PhD) Training Program. Dr. Herr received the 2014 Emerging Entrepreneurial Achievement Faculty Award from UC for his work to commercialize a novel anti-infective therapy based on his lab’s research.
BA: Oral Roberts University, Tulsa, OK, 1993.
PhD: Washington University Medical School, St. Louis, MO, 1999.
Postdoc: California Institute of Technology, Pasadena, CA, 2003.
Li X, Shu C, Yi G, Chaton CT, Shelton CL, Diao J, Zuo X, Kao CC, Herr AB, Li P. Cyclic GMP-AMP synthase is activated by double-stranded DNA-induced oligomerization. Immunity. 2013 Dec 12;39(6):1019-31.
Conrady DG, Wilson JJ, Herr AB. Structural basis for Zn2+-dependent intercellular adhesion in staphylococcal biofilms. Proc Natl Acad Sci U S A. 2013 Jan 15;110(3):E202-11.
Herr AB, Conrady DG. Thermodynamic analysis of metal ion-induced assembly. Methods Enzymol. 2011;488:101-21.
Herr AB, Farndale RW. Structural insights into the interactions between platelet receptors and fibrillar collagen. J Biol Chem. 2009 Jul 24;284(30):19781-5.
Horii K, Brooks MT, Herr AB. Convulxin forms a dimer in solution and can bind eight copies of glycoprotein VI: Implications for platelet activation. Biochemistry. 2009 Apr 7;48(13):2907-14.
Conrady DG, Brescia CC, Horii K, Weiss AA, Hassett DJ, Herr AB. A zinc-dependent adhesion module is responsible for intercellular adhesion in staphylococcal biofilms. Proc Natl Acad Sci U S A. 2008 Dec 9;105(49):19456-61.
Gomes, MM, SB Wall, K Takahashi, J Novak, MB Renfrow, and AB Herr. Analysis of IgA1 N-glycosylation and its contribution to FcaRI binding. Biochemistry. 2008 Oct 28;47(43):11285-99.
Horii K, Kahn ML, Herr AB. Structural basis for platelet collagen responses by the immune-type receptor glycoprotein VI. Blood. 2006 Aug 1;108(3):936-42.
Herr, AB, ER Ballister, and PJ Bjorkman. Insights into IgA-mediated immune responses from the crystal structures of human FcaRI and its complex with IgA1-Fc. Nature. 2003 Jun 5;423(6940):614-20.
Ornitz DM, Herr AB, Nilsson M, Westman J, Svahn CM, Waksman G. FGF binding and FGF receptor activation by synthetic heparan-derived di- and trisaccharides. Science. 1995 Apr 21;268(5209):432-6.
Studies of metal-dependent intercellular adhesion in Staphylococcal biofilms. Principal Investigator. National Institutes of Health. Sep 2011 – Jun 2015. NIH R01 GM094363.
Analytical tools for the analysis of clustered O-glycans in clinical samples. Principal Investigator of Sub-contract. National Institutes of Health. Sep 2011 – Jul 2015. NIH R01 GM098539.
Gurjit Khurana Hershey, MD, PhD Director, Division of Asthma Research
is the principal investigator of a federally funded Asthma and Allergic Diseases Cooperative Research Center which supports, in part, the asthma and allergy-based Greater Cincinnati Pediatric Clinic Repository. She also focuses on elucidating the genetic and environmental factors that contribute to the development of asthma and eczema.
Visit the Khurana Hershey Lab.
Director, Division of Asthma Research
Co-Director, Office of Pediatric Clinical Fellowships
Asthma; allergic rhinitis; food allergy; urticaria
Gurjit Khurana Hershey, MD, PhD, received a BS degree from the University of Iowa, and MD and PhD degrees from Washington University School of Medicine. After completing pediatric residency and an allergy/immunology Fellowship at St. Louis Children’s Hospital, Dr. Khurana Hershey joined the faculty at Cincinnati Children’s Hospital Medical Center. She now directs the Division of Asthma Research at Cincinnati Children’s Hospital Medical Center and is the director of the Medical Scientist Training Program at the University of Cincinnati College of Medicine.
In addition to her clinical duties, Dr. Khurana Hershey directs an NIH-funded research program focused on the genetics and genomics of allergic inflammation with a focus on cytokines and signal transduction. Her research has been continuously funded for over fifteen years. She is the principal investigator of an NIH-funded Asthma and Allergic Diseases Cooperative Research Center (AADCRC), and is also the PI of the Inner City Asthma Consortium, an NIH funded subcontract. She is the PI of the UC T32 MSTP training grant. In addition to her research contributions, she is an outstanding clinician and teacher/mentor. Several of her trainees now hold academic faculty positions. She is the recipient of the 2013 Cincinnati Children’s Educational Achievement Award.
Dr. Khurana Hershey is a fellow of the American Pediatric Society and the American Academy of Allergy, Asthma and Immunology. She serves on the Executive Council of the American Academy of Asthma, Allergy and Immunology Program Committee, is the Chair of the Grant Review Committee and appointed Vice Chair of the Basic and Immunology Interest Section. She is a member of the Editorial Board of the Journal of Allergy and Clinical Immunology. She was recently named One of the Five Leading Women in Healthcare in the Greater Cincinnati Metropolitan Area, and Outstanding Woman at Cincinnati Children’s Hospital Medical Center.
BS: University of Iowa, Iowa City, IA, 1985.PhD: Washington University School of Medicine, St. Louis, MO, 1990.
MD: Washington University School of Medicine, St. Louis, MO, 1992. Residency: St. Louis Children's Hospital, St. Louis, MO, 1992-1995. Fellowship: St. Louis Children's Hospital, St. Louis, MO, 1995-1997.
Board Certification: American Board of Pediatrics, 2009 - Present.
Board Certification: American Board of Allergy and Immunology, 2008 - Present.
Biagini Myers JM, Martin LJ, Butsch Kovacic M, Mersha TB, He H, Pilipenko V, Lindsey MA, Ericksen MB, Bernstein DI, LeMasters GK, Lockey JE, Khurana Hershey GK. Epistasis between serine protease inhibitor Kazal-type 5 (SPINK5) and thymic stromal lymphopoietin (TSLP) genes contributes to childhood asthma. J Allergy Clin Immunol. 2014 May 13. pii: S0091-6749(14)00520-X.
Wood RA, Togias A, Wildfire J, Visness CM, Matsui EC, Gruchalla R, Hershey G, Liu AH, O’Connor GT, Pongracic JA, Zoratti E, Little F, Granada M, Kennedy S, Durham SR, Shamji MH, Busse WW. Development of cockroach immunotherapy by the Inner-City Asthma Consortium. J Allergy Clin Immunol. 2014 Mar;133(3)846-52.
Zhang Z, Xiao C, Gibson AM, Bass SA, Khurana Hershey GK. EGFR signaling blunts allergen-induced IL-6 production and Th17 responses in the skin and attenuates development and relapse of atopic dermatitis. J Immunol. 2014 Feb 1:192(3):859-66.
Kinker KG, Gibson AM, Bass SA, Day BP, Deng, J, Medvedovic M, Figueroa JA, Hershey GK, Chen W. Overexpression of dimethylarginine dimethylaminohydrolase 1 attenuates airway inflammation in a mouse model of asthma. PloS One. 2014 Jan 10;9 (1):e85148.
Acciani TH, Brandt EB, Khurana Hershey GK, Le Cras TD. Diesel exhaust particle exposure increases severity of allergic asthma in young mice and children. Clin Exp Allergy. 2013 Dec;43(12):1406-18.
Brandt EB, Kovacic MB, Lee GB, Gibson AM, Acciani TH, Le Cras TD, Budelsky AL, Khurana Hershey GK. Diesel exhaust particle induction of IL17A contributes to severe asthma. J Allergy Clin Immunol. 2013 Nov:132(5);1194-1204.
Brandt EB, Gibson AM, Bass S, Khurana Hershey GK. Exacerbation of Allergen-Induced Eczema in TLR4- and TRIF-Deficient Mice. J Immunol. 2013 Oct 1;191(7):3519-25.
Chen W, Sivaprasad U, Gibson AM, Ericksen MB, Cunningham CM, Bass SA, Kinker KG, Finkelman FD, Wills-Karp M, Khurana Hershey GK. IL-13 receptor α2 contributes to development of experimental allergic asthma. J Allergy Clin Immunol. 2013 Oct;132(4):951-958.
Lee GB, Brandt EB, Xiao C, Gibson AM, Le Cras TD, Brown LA, Fitzpatrick AM, Khurana Hershey GK. Diesel exhaust particles induce cysteine oxidation and S-glutathionylation in house dust mite induced murine asthma. PLoS One. 2013;8(3):e60632.
Mintz-Cole RA, Brandt EB, Bass SA, Gibson AM, Reponen T, Khurana Hershey GK. Surface availability of beta-glucans is critical determinant of host immune response to C. cladosporioides. J Allergy Clin Immunol. 2013 Jul;132(1):159-69.
David A. Hildeman, PhD Director, Immunology Graduate Program
Director, Immunology Graduate Program
T cells; autoimmunity; sex differences in immune responses; apoptosis
Chae HD, Siefring JE, Hildeman DA, Gu Y, Williams DA. RhoH regulates subcellular localization of ZAP-70 and Lck in T cell receptor signaling. PLoS One. 2010 Nov 12;5(11):e13970.
Chougnet CA, Tripathi P, Lages CS, Raynor J, Sholl A, Fink P, Plas DR, Hildeman DA. A major role for Bim in regulatory T cell homeostasis. J Immunol. 2011 Jan 1;186(1):156-63.
Guo F, Hildeman D, Tripathi P, Velu CS, Grimes HL, Zheng Y. Coordination of IL-7 receptor and T-cell receptor signaling by cell-division cycle 42 in T-cell homeostasis. Proc Natl Acad Sci U S A. 2010 Oct 26;107(43):18505-10.
Kasten KR, Prakash PS, Unsinger J, Goetzman HS, England LG, Cave CM, Seitz AP, Mazuski CN, Zhou TT, Morre M, Hotchkiss RS, Hildeman DA, Caldwell CC. Interleukin-7 (IL-7) treatment accelerates neutrophil recruitment through gamma delta T-cell IL-17 production in a murine model of sepsis. Infect Immun. 2010 Nov;78(11):4714-22.
Tripathi P, Kurtulus S, Wojciechowski S, Sholl A, Hoebe K, Morris SC, Finkelman FD, Grimes HL, Hildeman DA. STAT5 is critical to maintain effector CD8+ T cell responses. J Immunol. 2010 Aug 15;185(4):2116-24.
Kurtulus S, Tripathi P, Opferman JT, Hildeman DA. Contracting the 'mus cells' -- does down-sizing suit us for diving into the memory pool? Immunol Rev. 2010 Jul;236:54-67. Review.
Lin AA, Wojciechowski SE, Hildeman DA. Androgens suppress antigen-specific T cell responses and IFN-γ production during intracranial LCMV infection. J Neuroimmunol. 2010 Sep 14;226(1-2):8-19.
Kasten KR, Tschöp J, Goetzman HS, England LG, Dattilo JR, Cave CM, Seitz AP, Hildeman DA, Caldwell CC. T-cell activation differentially mediates the host response to sepsis. Shock. 2010 Oct;34(4):377-83.
Kasten KR, Tschöp J, Adediran SG, Hildeman DA, Caldwell CC. T cells are potent early mediators of the host response to sepsis. Shock. 2010 Oct;34(4):327-36. Review.
Madan R, Demircik F, Surianarayanan S, Allen JL, Divanovic S, Trompette A, Yogev N, Gu Y, Khodoun M, Hildeman D, Boespflug N, Fogolin MB, Gröbe L, Greweling M, Finkelman FD, Cardin R, Mohrs M, Müller W, Waisman A, Roers A, Karp CL. Nonredundant roles for B cell-derived IL-10 in immune counter-regulation. J Immunol. 2009 Aug 15;183(4):2312-20.
Kasper Hoebe, PhD
focuses on mechanistic analysis of pathways of innate immune activation and the mechanisms underlying NK cell and CD8+ T cell development and cytolytic effector function, using forward genetic approaches. His discovery of an “endogenous adjuvant” pathway mediated by NK cell killing has led to research aimed at exploiting the knowledge obtained on NK cell-driven adaptive immune responses for the generation of new, safer vaccine approaches.
Innate-adaptive connection; mechanisms underlying NK cell and CD8+ T cell development; cytolytic effector function; safer vaccine approaches
Barnes MJ, Aksoylar H, Krebs P, Bourdeau T, Arnold CN, Xia Y, Khovananth K, Engel I, Sovath S, Lampe K, Laws E, Saunders A, Butcher GW, Kronenberg M, Steinbrecher K, Hildeman D, Grimes HL, Beutler B, Hoebe K. Loss of T cell and B cell quiescence precedes the onset of microbial flora-dependent wasting disease and intestinal inflammation in Gimap5-deficient mice. J Immunol. 2010 Apr 1;184(7):3743-54.
Krebs P, Barnes MJ, Lampe K, Whitley K, Bahjat KS, Beutler B, Janssen E, Hoebe K. NK-cell-mediated killing of target cells triggers robust antigen-specific T-cell-mediated and humoral responses. Blood. 2009 Jun 25;113(26):6593-602.
Hoebe K, Beutler B. Forward genetic analysis of TLR-signaling pathways: An evaluation. Adv Drug Deliv Rev. 2008 Apr 29;60(7):824-9.
Rutschmann S, Hoebe K. Dissecting innate immunity by germline mutagenesis. Immunology. 2008;123(4):459-68.
Baccala R, Hoebe K, Kono DH, Beutler B, Theofilopoulos AN. TLR-dependent and TLR-independent pathways of type I interferon induction in systemic autoimmunity. Nature Med. 2007;13(5);543–51.
Brinkmann MM, Spooner E, Hoebe K, Beutler B, Ploegh HL, Kim YM. The interaction between the ER membrane protein UNC93B and TLR3, 7, and 9 is crucial for TLR signaling. J Cell Biol. 2007;177(2):265-75.
Crozat K, Hoebe K, Ugolini S, Hong NA, Janssen E, Rutschmann S, Mudd S, Sovath S, Vivier E, Beutler B. Jinx, an MCMV susceptibility phenotype caused by disruption of Unc13d: a mouse model of type 3 familial hemophagocytic lymphohistiocytosis. J Exp Med. 2007;204(4):853-63.
Gavin AL, Hoebe K, Duong B, Ota T, Martin C, Beutler B, Nemazee D. Adjuvant-enhanced antibody responses in the absence of toll-like receptor signaling. Science. 2006;314(5807):1936-8.
Casrouge A, Zhang SY, Eidenschenk C, Jouanguy E, Puel A, Yang K, Alcais A, Picard C, Mahfoufi N, Nicolas N, Lorenzo L, Plancoulaine S, Senechal B, Geissmann F, Tabeta K, Hoebe K, Du X, Miller RL, Heron B, Mignot C, de Villemeur TB, Lebon P, Dulac O, Rozenberg F, Beutler B, Tardieu M, Abel L, Casanova JL. Herpes simplex virus encephalitis in human UNC-93B deficiency. Science. 2006;314(5797): 308-12.
Simon P. Hogan, PhD Director of Research, Division of Allergy and Immunology
Director of Research, Division of Allergy and Immunology
Director of Admissions, Immunology Graduate Program
Food allergies and anaphylaxis; inflammatory bowel diseases (IBD); innate immunity; gastrointestinal immunity and function; cystic fibrosis (CF)
Visit the Hogan Lab.
Waddell A, Ahrens R, Tsai YT, Sherrill JD, Denson LA, Steinbrecher KA, Hogan SP. Intestinal CCL11 and eosinophilic inflammation is regulated by myeloid cell-specific RelA/p65 in mice. J Immunol. 2013 May 1;190(9):4773-85.
Ahrens R, Osterfeld H, Wu D, Arumugam M, Groschwitz K, Strait RA, Finkelman FD, Hogan SP. Intestinal mast cell levels influence severity of oral antigen-induced anaphylaxis. Am J Pathol. 2012 Apr;180(4):1535-46.
Beichler A, Ahrens R, Steinbrecher K, Rothenberg ME, Munitz A, Denson L, Hogan SP. Colonic eosinophilic inflammation in experimental colitis is mediated by Ly6C+ CCR2+ inflammatory monocyte-derived CCL11. J Immunol. 2011 May 15;186(10):5993-6003.
Arumugam M, Ahrens R, Osterfeld H, Kottyan LC, Shang X, Maclennan JA, Zimmermann N, Zheng Y, Finkelman FD, Hogan SP. Increased susceptibility of 129SvEvBrd mice to IgE-Mast cell mediated anaphylaxis. BMC Immunol. 2011 Feb 3;12:14.
Wu D, Ahrens R, Osterfeld H, Noah TK, Groschwitz K, Foster PS, Steinbrecher KA, Rothenberg ME, Shroyer NF, Matthaei KI, Finkelman FD, Hogan SP. Interleukin-13 (IL-13)/IL-13 receptor alpha1 (IL-13Ralpha1) signaling regulates intestinal epithelial cystic fibrosis transmembrane conductance regulator channel-dependent Cl- secretion. Journal of Biological Chemistry. 2011;286(15), 13357-13369.
Osterfeld H, Ahrens R, Strait R, Rothenberg ME, Finkelman FD, Renauld JC, Hogan SP. Divergent roles for the IL9/IL9R-pathway in systemic antigen- and oral antigen-induced anaphylaxis. J Allergy Clin Immunol. 2010;125: 469-476.
Munitz A, Cole ET, Waddell A, Groschwitz K, Ahrens R, Steinbrecher K, Willson T, Han X, Denson L, Rothenberg ME, Hogan SP. Paired immunoglobulin-like receptor B (PIR-B) negatively regulates macrophage activation in experimental colitis. Gastroenterology. 2010;139(2), 530-541.
Groschwitz K, Ahrens R, Osterfeld H, Gurish MF, Abrink M, Finkelman F, Pejler G, Hogan SP. Mast cells regulate homeostatic intestinal epithelial migration and barrier function by a chymase/Mcpt4-dependent mechanism. Proceedings of the National Academy of Sciences of the United States of America. 2009;106(52), 22381-22386.
Ahrens R, Waddell A, Seidu L, Blanchard, C, Carey R, Forbes E, Lampinen M, Willson T, Cohen E, Stringer K, Ballard E, Munitz A, Xu H, Lee N, Lee JJ, Rothenberg ME, Denson L, Hogan SP. Intestinal macrophage/epithelial cell-derived CCL11/eotaxin-1 mediates eosinophil recruitment and function in pediatric ulcerative colitis. The Journal of Immunology. 2008;181(10), 7390-7399.
Forbes EE, Groschwitz K, Abonia JP, Brandt EB, Cohen E, Blanchard C, Ahrens R, Seidu L, McKenzie A, Strait R, Finkelman FD, Foster PS, Matthaei KI, Rothenberg ME, Hogan SP. IL-9- and mast cell-mediated intestinal permeability predisposes to oral antigen hypersensitivity. The Journal of Experimental Medicine. 2008;205(4), 897-913.
Eosinophil:M2 Macrophage:CCL11 Axis in Experimental Colitis and Pediatric Corticosteroid Resistant UC. Principal Investigator. National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Diseases (NIH/NIDDK). Apr 2012-Mar 2016.
Epithelial Genes in Allergic Inflammation. Project 2 – Collaborating Investigator. National Institutes of Health/National Institute of Allergy and Infectious Diseases (NIH/NIAIDS). Sep 2006-Aug 2016.
Margaret K. Hostetter, MD BK Rachford Professor and Chair, Department of Pediatrics
studies the pathogenesis of bloodstream infections caused by the yeast Candida albicans. Her work has highlighted the role of C. albicans in biofilms, activation of human T cells, and evasion of innate immune mechanisms. Her clinical research is focused on the medical evaluation of internationally adopted children.
BK Rachford Professor and Chair, Department of Pediatrics
Bacterial and fungal infections; medical evaluation of internationally adopted children
Vivian Hwa, PhD Basic Research Director, Cincinnati Center for Growth Disorders
Basic Research Director, Cincinnati Center for Growth Disorders
BS: University of Sydney, Sydney, Australia.
PhD: University of Illinois, Champaign-Urbana, IL.
Kern SL, Guevara-Aguirre J, Andrew S, Geng J, Guevara C, Guevara-Aguirre M, Guo M, Oddoux C, Shen Y, Zurita A, Rosenfeld RG, Ostrer H, Hwa V, Dauber A. A novel variant in CDKN1C is associated with intrauterine growth restriction, short stature, and early-adulthood onset diabetes. J Clin Endocrinol Metab. 2014 Oct;99(10):E2117-22.
Feigerlova E, Swinyard M, Andrew SF, Derr MA, Farnsworth J, Rosenfeld RG, Hwa V. A novel GHR intronic variant c.266+83G>T, activates a cryptic 5’ splice site causing severe GHR deficiency and classical GH insensitivity syndrome. Horm Res Paediatr. 2013;80(6):397-405.
Varco-Merth B, Feigerlová E, Shinde U, Rosenfeld RG, Hwa V, Rotwein P. Severe growth deficiency is associated with STAT5b mutations that disrupt protein folding and activity. Mol Endocrinol. 2013 Jan;27(1):150-61.
Dauber A, LaFranchi SH, Maliga Z, Lui JC, Moon JE, McDeed C, Henke K, Zonana J, Kingman GA, Pers TH, Baron J, Rosenfeld RG, Hirschhorn JN, Harris MP, Hwa V. Novel Microcephalic Primordial Dwarfism Disorder Associated with Variants in the Centrosomal Protein Ninein. J Clin Endocrinol Metab. 2012 Nov;97(11):E2140-51.
Scalia PA, Martinez AS, Feigerlova E, Bezrodnik L, Gaillard MI, Di Giovanni D, Ballerini MG, Jasper HG, Heinrich JJ, Fang P, Domené HM, Rosenfeld RG, Hwa V. A novel missense mutation in the SH2 domain of the STAT5B gene results in a transcriptionally inactive STAT5b associated with severe IGF-I deficiency, immune dysfunction, and lack of pulmonary disease. J Clin Endocrinol Metab. 2012 May;97(5):E830-9.
Derr MA, Aisenberg J, Fang P, Tenenbaum-Rakover Y, Rosenfeld RG, Hwa V. The growth hormone receptor (GHR) c.899dupC mutation functions as a dominant negative: insights into the pathophysiology of intracellular GHR defects. J Clin Endocrinol Metab. 2011 Nov;96(11):E1896-904.
Fang P, Kofoed EM, Little BM, Ross RJM, Frank, SJ, Hwa V, Rosenfeld RG. A mutant STAT5b, associated with growth hormone insensitivity and IGF-I deficiency, cannot function as a signal transducer or transcription factor. J Clin Endocrinol Metab. 2006 Apr; 91(4):1526-34.
Hwa V, Little B, Adiyaman P, Kofoed E, Pratt KL, Ocal G, Berberoglu M, Rosenfeld RG. Severe growth hormone insensitivity resulting from total absence of signal transducer and activator of transcription 5b. J Clin Endocrinol Metab. 2005 Jul;90(7):4260-6.
Hwa V, Little B, Kofoed EM, Rosenfeld RG. Transcriptional regulation of insulin-like growth factor-I (IGF-I) by interferon-gamma (IFN-γ) requires STAT-5b. J Biol Chem. 2004 Jan 23;279(4):2728-36.
Kofoed EM*, Hwa V*, Little B, Woods KA, Buckway CK, Tsubaki J, Pratt KL, Bezrodnik L, Jasper H, Tepper A, Heinrich JJ, Rosenfeld RG. Growth hormone insensitivity associated with a STAT5b mutation. N Engl J Med. 2003 Sep 18:349(12):1139-47. *co-first authors
Edith Janssen, PhD
focuses on mechanistic analysis and translational exploitation of the processes in dendritic cells that balance pro- and anti-inflammatory immune responses to self after cell death. Dr. Janssen aims at harnessing dendritic cells to develop effective autologous cancer vaccines. Her recent discovery (with Dr. Jonathan Katz) that dysregulation of such cells suggests a potential role for therapeutic modulation of these cells in autoimmune disease.
Hennies CM, Reboulet RA, Garcia Z, Nierkens S, Wolkers MC, Janssen EM. Selective expansion of merocytic dendritic cells and CD8DCs confers anti-tumour effect of Fms-like tyrosine kinase 3-ligand treatment in vivo. Clin Exp Immunol. 2011 Jan 14.
Reboulet RA, Hennies CM, Garcia Z, Nierkens S, Janssen EM. Prolonged antigen storage endows merocytic dendritic cells with enhanced capacity to prime anti-tumor responses in tumor-bearing mice. J Immunol. 2010 Sep 15;185(6):3337-47.
Katz JD, Ondr JK, Opoka RJ, Garcia Z, Janssen EM. Cutting edge: merocytic dendritic cells break T cell tolerance to beta cell antigens in nonobese diabetic mouse diabetes. J Immunol. 2010 Aug 15;185(4):1999-2003.
Janssen EM, Lemmens EE, Gour N, Reboulet RA, Green DR, Schoenberger SP, Pinkoski MJ. Distinct roles of cytolytic effector molecules for antigen-restricted killing by CTL in vivo. Immunol Cell Biol. 2010 Oct;88(7):761-5.
Krebs P, Barnes MJ, Lampe K, Whitley K, Bahjat KS, Beutler B, Janssen E, Hoebe K. NK-cell-mediated killing of target cells triggers robust antigen-specific T-cell-mediated and humoral responses. Blood. 2009 Jun 25;113(26):6593-602.
Kim-Saijo M, Janssen EM, Sugie K. CD4 cell-secreted, posttranslationally modified cytokine GIF suppresses Th2 responses by inhibiting the initiation of IL-4 production. Proc Natl Acad Sci U S A. 2008 Dec 9;105(49):19402-7.
Hildeman D, Janssen E. IFN-gamma and self-absorbed CD4+ T cells: a regulatory double negative. Nat Immunol. 2008 Nov;9(11):1210-2.
Benedict CA, Loewendorf A, Garcia Z, Blazar BR, Janssen EM. Dendritic cell programming by cytomegalovirus stunts naïve T cell responses via the PD-L1/PD-1 pathway. J Immunol. 2008 180:4836-4847.
Mothé B, Stewart B, Oseroff C, Bui H, Stogiera S, Garcia Z, Dow C, Rodriguez-Carreno M, Kotturi M, Pasquetto V, Botten J, Crotty S, Janssen E, Buchmeier M, Sette A . Chronic LCMV infection actively down regulates CD4+ T-cell responses directed against a broad range of epitopes. J Immunol. 2007 179:1058-1067.
Benedict CA, Janssen EM. Immunosuppression, learning from the masters. ERCI. 2007 3:659-662P.
Michael B. Jordan, MD
Histiocytic disorders: HLH and LCH
Marsh RA, Vaughn G, Kim MO, Li D, Jodele S, Joshi S, Mehta PA, Davies SM, Jordan MB, Bleesing JJ, Filipovich AH. Reduced-intensity conditioning significantly improves survival of patients with hemophagocytic lymphohistiocytosis undergoing allogeneic hematopoietic cell transplantation. Blood. 2010 Dec 23;116(26):5824-31.
Mehta PA, Vinks AA, Filipovich A, Bleesing J, Jodele S, Jordan MB, Marsh R, Tarin R, Edwards S, Fearing D, Lawrence J, Davies SM. Alternate-day micafungin antifungal prophylaxis in pediatric patients undergoing hematopoietic stem cell transplantation: a pharmacokinetic study. Biol Blood Marrow Transplant. 2010 Oct;16(10):1458-62.
Marsh RA, Madden L, Kitchen BJ, Mody R, McClimon B, Jordan MB, Bleesing JJ, Zhang K, Filipovich AH. XIAP deficiency: a unique primary immunodeficiency best classified as X-linked familial hemophagocytic lymphohistiocytosis and not as X-linked lymphoproliferative disease. Blood. 2010 Aug 19;116(7):1079-82.
Marsh RA, Satake N, Biroschak J, Jacobs T, Johnson J, Jordan MB, Bleesing JJ, Filipovich AH, Zhang K. STX11 mutations and clinical phenotypes of familial hemophagocytic lymphohistiocytosis in North America. Pediatr Blood Cancer. 2010 Jul 15;55(1):134-40.
Lin AA, Tripathi PK, Sholl A, Jordan MB, Hildeman DA. Gamma interferon signaling in macrophage lineage cells regulates central nervous system inflammation and chemokine production. J Virol. 2009 Sep;83(17):8604-15.
Marsh RA, Villanueva J, Kim MO, Zhang K, Marmer D, Risma KA, Jordan MB, Bleesing JJ, Filipovich AH. Patients with X-linked lymphoproliferative disease due to BIRC4 mutation have normal invariant natural killer T-cell populations. Clin Immunol. 2009 Jul;132(1):116-23.
Marsh RA, Villanueva J, Zhang K, Snow AL, Su HC, Madden L, Mody R, Kitchen B, Marmer D, Jordan MB, Risma KA, Filipovich AH, Bleesing JJ. A rapid flow cytometric screening test for X-linked lymphoproliferative disease due to XIAP deficiency. Cytometry B Clin Cytom. 2009 Sep;76(5):334-44.
Jordan MB, Filipovich AH. Hematopoietic cell transplantation for hemophagocytic lymphohistiocytosis: a journey of a thousand miles begins with a single (big) step. Bone Marrow Transplant. 2008 Oct;42(7):433-7.
Wojciechowski S, Jordan MB, Zhu Y, White J, Zajac AJ, Hildeman DA. Bim mediates apoptosis of CD127(lo) effector T cells and limits T cell memory. Eur J Immunol. 2006 Jul;36(7):1694-706.
Theodosia A. Kalfa, MD, PhD
Signaling in erythrocytes; erythropoiesis; sickle cell disease; reactive oxygen species
Visit the Kalfa Lab.
George A, Pushkaran S, Konstantinidis DG, Koochaki S, Malik P, Mohandas N, Zheng Y, Joiner CH, Kalfa TA. Erythrocyte NADPH oxidase activity modulated by Rac GTPases, PKC, and plasma cytokines contributes to oxidative stress in sickle cell disease. Blood. 2013 Mar 14;121(11):2099-107.
Konstantinidis DG, Pushkaran S, Johnson JF, Cancelas JA, Manganaris S, Harris CE, Williams DA, Zheng Y, Kalfa TA. Signaling and cytoskeletal requirements in erythroblast enucleation. Blood. 2012 Jun 21;119(25):6118-27.
Hammill AM, Risinger MA, Joiner CH, Keddache M, Kalfa TA. Compound heterozygosity for two novel mutations in the erythrocyte protein 4.2 gene causing spherocytosis in a Caucasian patient. Br J Haematol. 2011 Jan 31.
Kalfa TA. Anchoring at an island to relieve stress. Blood. 2011 Jan 20;117(3):748-9.
Mizukawa B, George A, Pushkaran S, Weckbach L, Kalinyak K, Heubi JE, Kalfa TA. Cooperating G6PD mutations associated with severe neonatal hyperbilirubinemia and cholestasis. Pediatr Blood Cancer. 2010 Oct 14.
Konstantinidis DG, George A, Kalfa TA. Rac GTPases in erythroid biology. Transfus Clin Biol. 2010 Sep;17(3):126-30.
Kalfa TA, Pushkaran S, Zhang X, Johnson JF, Pan D, Daria D, Geiger H, Cancelas JA, Williams DA, Zheng Y. Rac1 and Rac2 GTPases are necessary for early erythropoietic expansion in the bone marrow but not in the spleen. Haematologica. 2010 Jan;95(1):27-35.
Mulloy JC, Cancelas JA, Filippi MD, Kalfa TA, Guo F, Zheng Y. Rho GTPases in hematopoiesis and hemopathies. Blood. 2010 Feb 4;115(5):936-47.
Wang D, Zhang W, Kalfa TA, Grabowski G, Davies S, Malik P, Pan D. Reprogramming erythroid cells for lysosomal enzyme production leads to visceral and CNS cross-correction in mice with Hurler syndrome. Proc Natl Acad Sci U S A. 2009 Nov 24;106(47):19958-63.
Daria D, Filippi MD, Knudsen ES, Faccio R, Li Z, Kalfa T, Geiger H. The retinoblastoma tumor suppressor is a critical intrinsic regulator for hematopoietic stem and progenitor cells under stress. Blood. 2008 Feb 15;111(4):1894-902.
Rho GTPases in Terminal Erythroid Maturation. Principal Investigator. NIH/NHLBI. Sep 2012-Jun 2016. #1R01HL116352.
Erythrocyte Cytoskeleton Disorders Diagnostic Core. Principal Investigator. CCTST PCS T1 Pilot. July 2013- June 2015.
Cincinnati Center of Excellence in Hemoglobinopathies Research. Co-investigator. NIH/NHLBI. Aug 2013–May 2018. # U01 HL117709.
Jonathan D. Katz, PhD
is working to understand the role that autoreactive T lymphocytes play in the Immunopathogenesis of type 1 diabetes, the most common pediatric autoimmune disease. Major focuses include defining: (a) the control of autoreactive T cells via central and peripheral tolerance; (b) the role NKT cells play in regulating autoreactive T cells; and (c) the role dendritic cells play in activating and regulating autoreactive T cells in type 1 diabetes.
T cells; MHC, beta cell death; islet antigens
Jonathan D. Katz, PhD, focuses on autoimmune diabetes research. Autoimmune diabetes, also known as type 1 diabetes (T1D), is the most common pediatric autoimmune disease. Roughly 1/250 individuals develop T1D in the United States.There is currently no cure for T1D and the only treatment is daily exogenous insulin replacement therapy. Many T1D patients eventually develop secondary complications, such as hearth disease, blindness, peripheral neuropathy and renal failure.
Dr. Katz's work focuses on the role that autoreactive T lymphocytes play in the disease process. His lab interested in (1) the control of autoreactive T cells via central and peripheral tolerance, (2) the role NKT cells play in regulating autoreactive T cells, and (3) the role dendritic cells play in activating and regulating autoreactive T cells in T1D.
Most of his work uses the non-obese diabetic (NOD) mouse strain that spontaneously develops T1D with remarkable similar to the T1D seen in human patients. The availability of the NOD strain has allowed us to take a modern, reductionist molecular and cellular immunology approach to understanding the mechanism(s) and genetics underlying T1D susceptibility and disease progression. His lab makes extensive use of knockout, transgenic, regulated gene expression, targeted ablation, cell transfer and genomic studies the progression and regulation of T1D in the NOD mouse.
Katz JD, Ondr JK, Opoka RJ, Garcia Z, Janssen EM. Cutting edge: merocytic dendritic cells break T cell tolerance to beta cell antigens in nonobese diabetic mouse diabetes. J Immunol. 2010 Aug 15;185(4):1999-2003.
Pang S, Zhang L, Wang H, Yi Z, Li L, Gao L, Zhao J, Tisch R, Katz JD, Wang B. CD8(+) T cells specific for beta cells encounter their cognate antigens in the islets of NOD mice. Eur J Immunol. 2009 Oct;39(10):2716-24.
Saxena V, Ondr JK, Magnusen AF, Munn DH, Katz JD. The countervailing actions of myeloid and plasmacytoid dendritic cells control autoimmune diabetes in the nonobese diabetic mouse. J Immunol. 2007 Oct 15;179(8):5041-53.
Wojciechowski S, Tripathi P, Bourdeau T, Acero L, Grimes HL, Katz JD, Finkelman FD, Hildeman DA. Bim/Bcl-2 balance is critical for maintaining naive and memory T cell homeostasis. J Exp Med. 2007 Jul 9;204(7):1665-75.
Cain JA, Smith JA, Ondr JK, Wang B, Katz JD. NKT cells and IFN-gamma establish the regulatory environment for the control of diabetogenic T cells in the nonobese diabetic mouse. J Immunol. 2006 Feb 1;176(3):1645-54.
Vukkadapu SS, Belli JM, Ishii K, Jegga AG, Hutton JJ, Aronow BJ, Katz JD. Dynamic interaction between T cell-mediated beta-cell damage and beta-cell repair in the run up to autoimmune diabetes of the NOD mouse. Physiol Genomics. 2005 Apr 14;21(2):201-11.
Hutton JJ, Jegga AG, Kong S, Gupta A, Ebert C, Williams S, Katz JD, Aronow BJ. Microarray and comparative genomics-based identification of genes and gene regulatory regions of the mouse immune system. BMC Genomics. 2004 Oct 25;5(1):82.
Raphael Kopan, PhD Director, Division of Developmental Biology
and his lab have the long-term goal of organogenesis in vitro. They focus their efforts on Notch signaling as their lead into mechanistic understanding of tissue diversity using genetic engineering, embryology and single cell profiling. They interrogate the mouse embryo to address critical questions regarding the circuit logic of Notch signaling in mammalian organogenesis and its integration in larger signaling context.
Visit the Kopan Lab.
Director, Division of Developmental Biology
Notch signaling; kidney organogenesis; skin organogenesis; TSLP signaling in cancer
Raphael Kopan, PhD, who is a professor of developmental biology at Cincinnati Children's Hospital Medical Center, has carried out seminal work in the field of Notch biology. This work has, and continues to have, an enormous impact on our understanding of normal tissue development and renewal, Alzheimer's disease and cancer-related research. In deciphering the mode of Notch activation and demonstrating the use of inhibitors to modulate Notch activity, Dr. Kopan's work laid the groundwork for the therapeutic use of γ-secretase inhibitors in the treatment of cancers, currently in clinical trials. His current interests in organogenesis are focused on two modular organs - skin and kidney - in which his group is trying to understand how interplay among the same seven pathways results in activation of distant programs. Dr. Kopan's work has resulted in 120 scientific articles as of 2013. He is the co-inventor of one patent, and he has served on scientific advisory boards as well as being a consultant to the pharmaceutical industry.
BS, MsC: Department of Zoology, Tel-Aviv University, Israel.
PhD: Molecular Genetics and Cell Biology, University of Chicago, Chicago, IL.
Post-doctoral training: The Fred Hutchinson Cancer Research Center, Seattle, WA.
Liu Z, Chen S, Boyle S, Ilagan MX, Zhu Y, Zhang A, Kopan R. The Extracellular Domain of Notch2 Increases its Cell surface Abundance and Ligand Responsiveness During Kidney development. Dev Cell. 2013 Jun 24;25(6):585-98.
Morimoto M, Nishinakamura R, Saga Y, Kopan R. Different assemblies of Notch receptors coordinate the distribution of the major bronchial Clara, ciliated and neuroendocrine cells. Development. 2012 Dec 1:139(23): 4365-73.
Demehri S, Turkoz A, Manivasagam S, Yockey LJ, Turkoz M, Kopan R. Elevated Epidermal Thymic Stromal Lymphopoietin Levels Establish An Anti-Tumor Environment In The Skin. Cancer Cell. 2012 Oct;16;22(4): 494–505.
Barak H, Huh SH, Chen S, Jeanpierre C, Martinovic J, Parisot M, Bole-Feysot C, Nitschké P, Salomon R, Antignac C, Ornitz DM, Kopan R. FGF9 and FGF20 maintain the stemness of nephron progenitors in mice and man. Dev Cell. 2012 Jun 12;22(6): 1191-1207.
Boyle SC, Kim M, Valerius MT, McMahon AP, Kopan R. Notch pathway activation can replace the requirement for Wnt4 and Wnt9b in mesenchymal-to-epithelial transition of nephron stem cells. Development. 2011 Oct;138(19): 4245-54.
Ilagan MX, Lim S, Fulbright M, Piwnica-Worms D, Kopan R. Real-time imaging of notch activation with a luciferase complementation-based reporter. Sci Signal. 2011 Jul 12;4(181):rs7.
Liu Z, Turkoz A, Jackson EN, Corbo JC, Engelbach JA, Garbow J, Piwnica-Worms D, Kopan R. Notch1 loss of heterozygosity causes vascular tumors and lethal hemorrhage in mice. J Clin Invest. 2011 Feb;121(2):800-8.
Liu Z, Schneider DL, Kornfeld K, Kopan R. Simple copy number determination with reference query pyrosequencing (RQPS). Cold Spring Harb Protoc. 2010 Sep 1;2010(9):pdb.prot5491.
Morimoto M, Liu Z, Cheng HT, Winters N, Bader D, Kopan R. Canonical Notch signaling in the developing lung is required for determination of arterial smooth muscle cells and selection of Clara versus ciliated cell fate. J Cell Sci. 2010 Jan 15;123(Pt2):213-24.
Demehri S, Morimoto M, Holtzman MJ, Kopan R. Skin-derived TSLP triggers progression from epidermal-barrier defects to asthma. PLoS Biol. 2009 May 19;7(5): e1000067.
Ashish R. Kumar, MD, PhD
Childhood cancer and blood disorders; immune deficiency
Dr. Kumar received his medical degree from L.T.M. Medical College, Mumbai, India, his PhD in anatomy and cell biology from the University of Iowa, pediatric residency training at the Mayo Clinic and fellowship in pediatric hematology / oncology / BMT at the University of Minnesota. He was appointed to the faculty of the University of Minnesota in the Department of Pediatrics where he was a member of the programs in pediatric leukemia and global pediatrics. As a faculty of the Masonic Cancer Center, he was also part of the Genetic Mechanisms of Cancer research program. Dr. Kumar’s laboratory is engaged in researching the biology of infant leukemia. Discoveries made in his laboratory have significantly enhanced the current understanding of leukemia.
Kumar AR, Yao Q, Li Q, Sam TA, Kersey JH. t(4;11) leukemias display addiction to MLL-AF4 but not to AF4-MLL. Leuk Res. 2011 Mar;35(3):305-9.
Kumar AR, Sarver AL, Wu B, Kersey JH. Meis1 maintains stemness signature in MLL-AF9 leukemia. Blood. 2010 Apr 29;115(17):3642-3.
Burke MJ, Cao Q, Trotz B, Weigel B, Kumar A, Smith A, Verneris MR. Allogeneic hematopoietic cell transplantation (allogeneic HCT) for treatment of pediatric Philadelphia chromosome-positive acute lymphoblastic leukemia (ALL). Pediatr Blood Cancer. 2009 Dec 15;53(7):1289-94.Kumar AR, Li Q, Hudson WA, Chen W, Yao Q, Sam TN, Wu B, Lund EA, Kowal BJ and Kersey JH. A role for MEIS1 in MLL-fusion gene leukemia. Blood. 2009 Feb 19; 113(8):1756-8. Chen W*, Kumar AR*, Hudson WA, Li Q, Wu B, Staggs RA, Lund EA, Sam TN and Kersey JH. Malignant transformation initiated by Mll-AF9: Gene dosage and critical target cells. Cancer Cell. 2008 May; 13: 432-440. *Co-first authors. Kris Ann P. Schultz, MD, Joseph P. Neglia, MD, MPH, Angela R. Smith, MD, Hans D. Ochs, MD, Dr. med., Troy R. Torgerson, MD, PhD, and Ashish Kumar, MD, PhD. Familial Hemophagocytic Lymphohistiocytosis in Two Brothers With X-Linked Agammaglobulinemia. Pediatric Blood and Cancer 2008; 51:293–295. White JG, Kumar AR, Hogan MJ. Gray Platelet Syndrome in a Somalian Family. Platelets. 2006 Dec; 17:519-527. Mehta PA, Davies SM, Kumar A, Devidas M, Lee S, Zamzow T, Elliott J, Villanueva J, Pullen J, Zewge Y, and Filipovich A; Children’s Oncology Group. Perforin polymorphism A91V and susceptibility to B-precursor childhood acute lymphoblastic leukemia: a report from the Children's Oncology Group. Leukemia. 2006 Sep; 20; 1539-1541. Chen W, Li Q, Hudson WA, Kumar A, Kirchhof N, Kersey JH. A murine Mll-AF4 knock-in model results in lymphoid and myeloid deregulation and hematological malignancy. Blood. 2006 Jul 15; 108:669-677.
Ian P. Lewkowich, PhD
investigates the factors that drive the development of severe allergic asthma, with a particular focus on the molecular mechanisms through which Th17 cytokines enhance IL-13 signaling, the regulation of the asthmatic response through the PD-1/PD-L axis and the mechanisms of the well-described maternal influence in inherited asthma risk.
While Th2 immune responses are central to disease pathology in allergic asthma, there is a growing understanding that the Th2 paradigm is not sufficient to explain the entire spectrum of disease severity. Indeed, there is growing belief that severe disease may be driven by a different process than mild to moderate disease.
Using a mouse model of allergic asthma in which one strain develops a phenotype characteristic of mild asthma (C3H/HeJ), and others develop a phenotype characteristic of severe disease (A/J), we have identified several novel mechanisms through which asthma severity is regulated. We have found that the development of severe allergic asthma is associated with a limited capacity of Tregs to limit pulmonary dendritic cell activity, enhanced capacity for antigen uptake by pulmonary myeloid dendritic cells, and the development of a mixed Th2/Th17 immune response. In contrast, C3H mice demonstrate increased Treg activity, preferential antigen uptake by pulmonary plasmacytoid dendritic cells, and an exclusively Th2-biased immune response. We are presently using the A/J versus C3H/HeJ mouse model of allergic asthma to tease out the mechanisms responsible the development of severe allergic asthma.