All Publications


  • A Quiescent Bcl11b High Stem Cell Population Is Required for Maintenance of the Mammary Gland. Cell stem cell Cai, S., Kalisky, T., Sahoo, D., Dalerba, P., Feng, W., Lin, Y., Qian, D., Kong, A., Yu, J., Wang, F., Chen, E. Y., Scheeren, F. A., Kuo, A. H., Sikandar, S. S., Hisamori, S., van Weele, L. J., Heiser, D., Sim, S., Lam, J., Quake, S., Clarke, M. F. 2017; 20 (2): 247-260 e5

    Abstract

    Stem cells in many tissues sustain themselves by entering a quiescent state to avoid genomic insults and to prevent exhaustion caused by excessive proliferation. In the mammary gland, the identity and characteristics of quiescent epithelial stem cells are not clear. Here, we identify a quiescent mammary epithelial cell population expressing high levels of Bcl11b and located at the interface between luminal and basal cells. Bcl11b(high) cells are enriched for cells that can regenerate mammary glands in secondary transplants. Loss of Bcl11b leads to a Cdkn2a-dependent exhaustion of ductal epithelium and loss of epithelial cell regenerative capacity. Gain- and loss-of-function studies show that Bcl11b induces cells to enter the G0 phase of the cell cycle and become quiescent. Taken together, these results suggest that Bcl11b acts as a central intrinsic regulator of mammary epithelial stem cell quiescence and exhaustion and is necessary for long-term maintenance of the mammary gland.

    View details for DOI 10.1016/j.stem.2016.11.007

    View details for PubMedID 28041896

    View details for PubMedCentralID PMC5341693