| First Author | Chen S | Year | 2015 |
| Journal | Dev Cell | Volume | 35 |
| Issue | 1 | Pages | 49-62 |
| PubMed ID | 26460946 | Mgi Jnum | J:239869 |
| Mgi Id | MGI:5881888 | Doi | 10.1016/j.devcel.2015.09.009 |
| Citation | Chen S, et al. (2015) Intrinsic Age-Dependent Changes and Cell-Cell Contacts Regulate Nephron Progenitor Lifespan. Dev Cell 35(1):49-62 |
| abstractText | During fetal development, nephrons of the metanephric kidney form from a mesenchymal progenitor population that differentiates en masse before or shortly after birth. We explored intrinsic and extrinsic mechanisms controlling progenitor lifespan in a transplantation assay that allowed us to compare engraftment of old and young progenitors into the same young niche. The progenitors displayed an age-dependent decrease in proliferation and concomitant increase in niche exit rates. Single-cell transcriptome profiling revealed progressive age-dependent changes, with heterogeneity increasing in older populations. Age-dependent elevation in mTor and reduction in Fgf20 could contribute to increased exit rates. Importantly, 30% of old progenitors remained in the niche for up to 1 week post engraftment, a net gain of 50% to their lifespan, but only if surrounded by young neighbors. We provide evidence in support of a model in which intrinsic age-dependent changes affect inter-progenitor interactions that drive cessation of nephrogenesis. |
