Tony J. De Falco, PhD

Academic Affiliations

Assistant Professor, UC Department of Pediatrics

Phone 513-803-3988


Differentiation of the fetal gonad into a sexually dimorphic and structurally specialized organ; spermatogonial differentiation; roles of myeloid cells in tissue remodeling, organ vascularization and spermatogonial development.

Visit the De Falco Lab.

BA: University of Virginia, Charlottesville, VA.

PhD: Johns Hopkins University, Baltimore, MD.

Postdoc: Duke University Medical Center, Durham, NC.

Postdoc: National Institute of Genetics, Mishima, Japan.

View PubMed Publications

DeFalco T*, Potter SJ, Williams AV, Waller B, Kan MJ, Capel B. Macrophages Contribute to the Spermatogonial Niche in the Adult Testis**. Cell Rep. 2015;12(7):1107-19. (*corresponding author) (**Featured Article on the cover of the August 18th issue of Cell Reports, and also highlighted as a Preview in Cell Reports and as a featured article in the “World of Reproductive Biology” in Biology of Reproduction)

Potter SJ, DeFalco T. Using ex vivo upright droplet cultures of whole fetal organs to study developmental processes during mouse organogenesis. J Vis Exp. 2015;104:e53262.

DeFalco T*, Bhattacharya I, Williams AV, Sams, DM, Capel, B.* Yolk-sac-derived macrophages regulate fetal testis vascularization and morphogenesis. Proc Natl Acad Sci U S A. 2014 Jun 10;111(23):E2384-2393. (*co-corresponding authors)

DeFalco T, Saraswathula A, Briot A, Iruela-Arispe ML, Capel B. Testosterone levels influence mouse fetal Leydig cell progenitors through Notch signaling. Biol Reprod. 2013 Apr 11;884:91.

Jameson S, Natarajan A, Cool J, DeFalco T, Maatouk D, Mork L, Munger SC, Capel B. Temporal transcriptional profiling of somatic and germ cells reveals biased lineage priming of sexual fate in the fetal mouse gonad. PLoS Genet. 2012;8(3):e1002575.

DeFalco T, Takahashi S, Capel B. Two distinct origins for Leydig cell progenitors in the fetal testis. Dev Biol. 2011 Apr 1;352(1):14-26.

Cool J, DeFalco TJ, Capel B. Vascular-mesenchymal cross-talk through Vegf and Pdgf drives organ patterning. Proc Natl Acad Sci U S A. 2011 Jan 4;108(1):167-172.

DeFalco T, Capel B. Gonad morphogenesis in vertebrates: divergent means to a convergent end. Annu Rev Cell Dev Biol. 2009;25:457-82.

DeFalco T, Camara N, Le Bras S, Van Doren M. Nonautonomous sex determination controls sexually dimorphic development of the Drosophila gonad. Dev Cell. 2008 Feb;14(2):275-86.

DeFalco TJ, Verney G, Jenkins AB, McCaffery JM, Russell S, Van Doren M. Sex-specific apoptosis regulates sexual dimorphism in the Drosophila embryonic gonad. Dev Cell. 2003 Aug;5(2):205-16.