Syntaxin binding protein 2 in sertoli cells regulates spermatogonial stem cell maintenance through directly interacting with connexin 43 in the testes of neonatal mice

Syntaxin binding protein 2 in sertoli cells regulates spermatogonial stem cell maintenance through directly interacting with connexin 43 in the testes of neonatal mice
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支持细胞中的突触结合蛋白 2 通过与新生小鼠睾丸中的连接蛋白 43 直接相互作用来调节精原干细胞的维持

DOI:
10.1007/s11033-022-07564-1
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发表时间:
2022-05
影响因子:
2.8
通讯作者:
Bo Zheng
Bo Zheng
中科院分区:
生物学4区
文献类型:
--
作者:
Yibo Wu;Cong Shen;Tiantian Wu;Xiaoyan Huang;Hong Li;Bo Zheng

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支持细胞和生殖细胞之间的相互作用是精子发生和男性生育所必需的。然而,睾丸中这些相互作用的作用机制仍然很大程度上是未知的。在这项研究中,我们研究了syntaxin结合蛋白2 (STXBP2)在哺乳动物睾丸中的分布和功能。方法与结果:首先,我们发现STXBP2主要在支持细胞中表达。然后,为了探讨STXBP2在睾丸中的功能,我们评估了STXBP2敲低对新生儿睾丸和精原干细胞(SSC)发育的影响。我们的结果表明,STXBP2是支持细胞迁移和生殖细胞存活所必需的。在机制上,我们发现STXBP2与连接蛋白43 (Cx43)相互作用并调节其表达。综上所述,我们的研究结果证明了一种新的调控机制,其中STXBP2/Cx43复合物对于维持sertoli -种系相互作用至关重要。
Interactions between Sertoli and germ cells are essential for spermatogenesis and male fertility. However, the mechanism of action underlying these interactions in the testes remains largely unknown. In this study, we investigated the distribution and function of syntaxin binding protein 2 (STXBP2) in the mammalian testis. METHODS AND RESULTS: First, we found that STXBP2 was mainly expressed in Sertoli cells. Then, to explore the function of STXBP2 in the testes, we assessed the effects of Stxbp2 knockdown on neonatal testicular and spermatogonial stem cell (SSC) development. Our results revealed that STXBP2 was required for the migration of Sertoli cells and germ cell survival. Mechanistically, we found that STXBP2 interacted with connexin 43 (Cx43) and regulated its expression.Taken together, our results demonstrated a novel regulatory mechanism in which the STXBP2/Cx43 complex is essential for the maintenance of Sertoli-germline interactions.
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