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. 2022 Sep;389(3):573-585.
doi: 10.1007/s00441-022-03653-6. Epub 2022 Jun 25.

Downregulation of CDC42 inhibits the proliferation and stemness of human trophoblast stem cell via EZRIN/YAP inactivation

Bi Shilei #  1   2   3   4 , Zhang Lizi  5 , Huang Lijun #  1   2   3   4 , Ma Weixu  1   2   3   4 , Meng Nan  6 , Deng Weinan  1   2   3   4 , Li Yulian  1   2   3   4 , Liang Yingyu  1   2   3   4 , Huang Minshan  1   2   3   4 , Xu Pei  1   2   3   4 , Liu Mingxing  1   2   3   4 , Chen Jingsi  1   2   3   4 , Tu Zhaowei  1   2   3   4 , Wang Zhijian  5 , Wang Haibin  6 , Lu Jinhua #  7 , Chen Dunjin #  8   9   10   11 , Du Lili #  12   13   14   15
Affiliations

Downregulation of CDC42 inhibits the proliferation and stemness of human trophoblast stem cell via EZRIN/YAP inactivation

Bi Shilei et al. Cell Tissue Res. 2022 Sep.

Abstract

Placental dysplasia increases the risk of recurrent spontaneous abortion (RSA). However, the underlying mechanism regulating placental development remains unclear. In this study, we showed that the expression of CDC42 was decreased in the villous tissue of RSA samples compared to healthy controls. Further examination demonstrated that CDC42 deficiency led to the differentiation of human trophoblast stem cells (hTSCs) and inhibited their proliferation. Genetic manipulation of YAP and EZRIN in hTSCs revealed that CDC42 regulates the stemness and proliferation of hTSCs; this is dependent on EZRIN, which translocates YAP into the nucleus. Moreover, the expression pattern of EZRIN, YAP, and Ki67 was also abnormal in the villous tissue of RSA samples, consistent with in vitro experiments. In summary, these findings suggest that the CDC42/EZRIN/YAP pathway plays an important role in placental development.

Keywords: CDC42; EZRIN; Human trophoblast stem cell; Placenta; Recurrent spontaneous abortion; YAP.

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