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- W1574603716 abstract "Abstract echanisms modulating prostate cell fate determination remain unexplored. The leucine-rich repeat containing G-protein-coupled receptors (Lgr) have been identified as important stem cell markers in various tissues. Here, we investigated the roles of Lgr4/Gpr48 in prostate stem cells (PSCs) and development. Lgr4 was ubiquitously expressed during early prostate development prior to lineage specification, with adult expression restricted to a few basal cells (principally Lin−Sca1+CD49f+). Lgr4−/− mice had compromised branching morphogenesis and delayed epithelial differentiation, leading to decreased prostate size and impaired luminal cell function. In vitro prostate sphere culture revealed that Lgr4−/− Lin−/Sca1+/CD49f+ cells failed to generate p63low cells, indicating a differentiation deficiency. Furthermore, Lgr4 ablation arrested PSC differentiation of in vivo kidney capsule prostate grafts, suggesting that Lgr4 modulates PSC properties independent of hormonal and mesenchymal effects. Analysis of neonatal prostates and prostate spheres revealed a decrease in Wnt, Sonic Hedgehog, and Notch1 expression in Lgr4−/− cells. Lgr4 loss blocked differentiation of prostate sphere p63hi cells to p63low. Treatment with exogenous Sonic Hedgehog partially restored the differentiation of p63hi cells in Lgr4−/− spheres. Taken together, our data revealed the roles of Lgr4 in early prostate development and in stem cell differentiation through regulation of the Wnt, Notch, and Sonic Hedgehog signaling pathways." @default.
- W1574603716 created "2016-06-24" @default.
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- W1574603716 date "2013-11-01" @default.
- W1574603716 modified "2023-10-02" @default.
- W1574603716 title "Lgr4 is a key regulator of prostate development and prostate stem cell differentiation" @default.
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- W1574603716 doi "https://doi.org/10.1002/stem.1484" @default.
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