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oai:repisalud.isciii.es:20.500.12105/100012024-11-29T15:56:51Zcom_20.500.12105_2173com_20.500.12105_2051col_20.500.12105_19597

00925njm 22002777a 4500 dc Giraddi, Rajshekhar R author Shehata, Mona author Gallardo, Mercedes author Blasco, MA author Simons, Benjamin D author Stingl, John author 2015-10-29 The cycling properties of mammary stem and progenitor cells is not well understood. To determine the division properties of these cells, we administered synthetic nucleosides for varying periods of time to mice at different stages of postnatal development and monitored the rate of uptake of these nucleosides in the different mammary cell compartments. Here we show that most cell division in the adult virgin gland is restricted to the oestrogen receptor-expressing luminal cell lineage. Our data also demonstrate that the oestrogen receptor-expressing, milk and basal cell subpopulations have telomere lengths and cell division kinetics that are not compatible with these cells being hierarchically organized; instead, our data indicate that in the adult homeostatic gland, each cell type is largely maintained by its own restricted progenitors. We also observe that transplantable stem cells are largely quiescent during oestrus, but are cycling during dioestrus when progesterone levels are high. Nat Commun. 2015;6:8487. 10.1038/ncomms9487 2041-1723 2041-1723 Nature communications 26511661 http://hdl.handle.net/20.500.12105/10001 Stem and progenitor cell division kinetics during postnatal mouse mammary gland development