Kindlin-2 in Sertoli cells is essential for testis development and male fertility in mice.

Kindlin-2 in Sertoli cells is essential for testis development and male fertility in mice.
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支持细胞中的 Kindlin-2 对于小鼠睾丸发育和雄性生育能力至关重要。

DOI:
10.1038/s41419-021-03885-4
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发表时间:
2021-06-11
影响因子:
9
通讯作者:
Zhang H
Zhang H
中科院分区:
生物学1区
文献类型:
--
作者:
Chi X;Luo W;Song J;Li B;Su T;Yu M;Wang T;Wang Z;Liu C;Li Z;He H;Zhan J;Zhang H

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Kindlin-2在心肌、平滑肌、软骨和血管等中胚层来源组织的发育过程中发挥重要作用。然而,Kindlin-2在中胚层来源的生殖器官中的作用尚不清楚。在这里,我们报道了支持细胞中Kindlin-2的缺失会导致雄性小鼠严重的睾丸发育不全、生殖细胞发育异常和完全不育。在功能上,Kindlin-2的缺失抑制了支持细胞的增殖,增加了细胞的凋亡,损害了支持细胞的吞噬功能,破坏了睾丸内血-睾丸屏障结构的整合。在机制上,Kindlin-2与河马途径的关键成分LATS1和YAP相互作用。Kindlin-2抑制LATS1与YAP的相互作用,而Kindlin-2的缺失增强了LATS1与YAP的相互作用,增加了YAP的磷酸化,减少了其核转位。与临床相关的是,在SCOS患者中发现Kindlin-2的低表达和YAP的核定位减少。总之,我们证明了支持细胞中的Kindlin-2对于精子发育和男性生殖是必不可少的。
Kindlin-2 is known to play important roles in the development of mesoderm-derived tissues including myocardium, smooth muscle, cartilage and blood vessels. However, nothing is known for the role of Kindlin-2 in mesoderm-derived reproductive organs. Here, we report that loss of Kindlin-2 in Sertoli cells caused severe testis hypoplasia, abnormal germ cell development and complete infertility in male mice. Functionally, loss of Kindlin-2 inhibits proliferation, increases apoptosis, impairs phagocytosis in Sertoli cells and destroyed the integration of blood-testis barrier structure in testes. Mechanistically, Kindlin-2 interacts with LATS1 and YAP, the key components of Hippo pathway. Kindlin-2 impedes LATS1 interaction with YAP, and depletion of Kindlin-2 enhances LATS1 interaction with YAP, increases YAP phosphorylation and decreases its nuclear translocation. For clinical relevance, lower Kindlin-2 expression and decreased nucleus localization of YAP was found in SCOS patients. Collectively, we demonstrated that Kindlin-2 in Sertoli cells is essential for sperm development and male reproduction.
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