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Loss of RANK signaling leads to stem cell activation in post pregnancy mammary glands

ABSTRACT: The purpose of this study was to elucidate the molecular changes of the mammary epithelium induced by luminal cell specific RANK deletion. We have characterized the phenotypic consequences of RANK deletion in the luminal lineage of the mammary epithelium, and uncovered that Rank KO luminal cells have reduced long term renewal following sucessive pregnancies. Lineage tracing analysis has demonstrated that during pregnancy 2, Rank deleted luminal cells are repleace by a wt luminal cell population, derived from the basal epithelium. We therefore decided to perform RNA seq in resting mammary glands from virgin and parous (following pregnancy one) females, cells were FACS sorted based on the traditional markers CD24 and CD49f and in the case of luminal cells GFP (recombined cells). We have isolated luminal cells to identify the molecular pathways involved in reduced long term renewal oberved in the parous context; basal cells were isolated to adress the putative mechanims regulated the bipotency observed during second pregnancy

ORGANISM(S): Mus musculus

PROVIDER: GSE199746 | GEO | 2023/09/01

REPOSITORIES: GEO

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