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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Fibroblast growth factor receptor 2 regulates proliferation and Sertoli differentiation during male sex determination
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Fibroblast growth factor receptor 2 regulates proliferation and Sertoli differentiation during male sex determination

机译:成纤维细胞生长因子受体2调节男性性别决定过程中的增殖和支持细胞分化

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摘要

Targeted mutagenesis of Fgf9 in mice causes male-to-female sex reversal. Among the four FGF receptors, FGFR2 showed two highly specific patterns based on antibody staining, suggesting that it might be the receptor-mediating FGF9 signaling in the gonad. FGFR2 was detected at the plasma membrane in proliferating coelomic epithelial cells and in the nucleus in Sertoli progenitor cells. This expression pattern suggested that Fgfr2 might play more than one role in testis development. To test the hypothesis that Fgfr2 is required for male sex determination, we crossed mice carrying a floxed allele of Fgfr2 with two different Cre lines to induce a temporal or cell-specific deletion of this receptor. Results show that deletion of Fgfr2 in embryonic gonads phenocopies deletion of Fgf9 and leads to male-to-female sex reversal. Using these two Cre lines, we provide the first genetic evidence that Fgfr2 plays distinct roles in proliferation and Sertoli cell differentiation during testis development.
机译:Fgf9在小鼠中的定向诱变会导致男女性别逆转。在四种FGF受体中,基于抗体染色的FGFR2显示出两种高度特异性的模式,表明它可能是性腺中介导受体FGF9的信号。 FGFR2在增殖的结肠上皮细胞的质膜和Sertoli祖细胞的细胞核中检测到。这种表达模式表明Fgfr2可能在睾丸发育中发挥多种作用。为了检验男性性别确定需要Fgfr2的假设,我们将携带Fgfr2浮等位基因的小鼠与两个不同的Cre系杂交,以诱导该受体的时间或细胞特异性缺失。结果表明,胚胎性腺表型中的Fgfr2缺失会导致Fgf9缺失,并导致男女性别逆转。使用这两个Cre品系,我们提供了第一个遗传证据,即Fgfr2在睾丸发育过程中的增殖和支持细胞分化中起着独特的作用。

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