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首页> 外文期刊>Biochemical and Biophysical Research Communications >The APC/C activator Cdh1 regulates the G2/M transition during differentiation of placental trophoblast stem cells
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The APC/C activator Cdh1 regulates the G2/M transition during differentiation of placental trophoblast stem cells

机译:APC / C激活剂Cdh1在胎盘滋养层干细胞分化过程中调节G2 / M过渡

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摘要

Differentiation of placental trophoblast stem (TS) cells to trophoblast giant (TG) cells is accompanied by transition from a mitotic cell cycle to an endocycle. Here, we report that Cdh1, a regulator of the anaphase-promoting complex/cyclosome (APC/C), negatively regulates mitotic entry upon the mitotic/endocycle transition. TS cells derived from homozygous Cdh1 gene-trapped (Cdh1GT/GT) murine embryos accumulated mitotic cyclins and precociously entered mitosis after induction of TS cell differentiation, indicating that Cdh1 is required for the switch from mitosis to the endocycle. Furthermore, the Cdh1GT/GT TS cells and placenta showed aberrant expression of placental differentiation markers. These data highlight an important role of Cdh1 in the G2/M transition during placental differentiation.
机译:胎盘滋养层干细胞(TS)向滋养层巨细胞(TG)的分化伴随着有丝分裂细胞周期向内周期的过渡。在这里,我们报告Cdh1,后期促进复合物/环体(APC / C)的调节剂,在有丝分裂/内循环过渡时负调节有丝分裂进入。从纯合的Cdh1基因捕获的小鼠胚胎(Cdh1GT / GT)衍生的TS细胞积累了有丝分裂细胞周期蛋白,并在诱导TS细胞分化后早熟地进入有丝分裂状态,这表明从有丝分裂向内循环转变需要Cdh1。此外,Cdh1GT / GT TS细胞和胎盘显示胎盘分化标志物的异常表达。这些数据突出了Cdh1在胎盘分化过程中G2 / M过渡中的重要作用。

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