Competition for Mitogens Regulates Spermatogenic Stem Cell Homeostasis in an Open Niche
• Mouse spermatogenic stem cells (SSCs) migrate among their differentiating progeny
• Lymphatic endothelial cells near vasculature secrete FGFs that act as SSC mitogens
• SSCs tune their self-renewal and differentiation in response to FGF consumption
• Competition for limited supply of mitogen (FGFs) regulates SSC density homeostasis
Cell Stem Cell. 2018 Dec 11. pii: S1934-5909(18)30549-6. doi: 10.1016/j.stem.2018.11.013