PRC1 suppresses a female gene regulatory network to ensure testicular differentiation.

PRC1 suppresses a female gene regulatory network to ensure testicular differentiation.
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PRC1抑制雌性基因调控网络以确保睾丸分化。

DOI:
10.1038/s41419-023-05996-6
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发表时间:
2023-08-04
影响因子:
9
通讯作者:
Namekawa, Satoshi H. H.
Namekawa, Satoshi H. H.
中科院分区:
生物学1区
文献类型:
--
作者:
Maezawa, So;Yukawa, Masashi;Hasegawa, Kazuteru;Sugiyama, Ryo;Iizuka, Mizuho;Hu, Mengwen;Sakashita, Akihiko;Vidal, Miguel;Koseki, Haruhiko;Barski, Artem;DeFalco, Tony;Namekawa, Satoshi H. H.

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性腺的性别决定和分化由睾丸(支持细胞)和卵巢(颗粒细胞)的体细胞支持细胞控制。在睾丸中,维持负责抑制女性性别分化的染色质状态的表观遗传机制尚不清楚。在这里,我们发现Polycomb suppression complex 1 (PRC1)抑制出生后Sertoli细胞中的一个雌性基因调控网络。我们在性别决定后从基因上破坏了胚胎支持细胞中的PRC1功能,我们发现PRC1缺失的出生后支持细胞表现出增殖缺陷和细胞死亡,导致成年睾丸变性。在成人Sertoli细胞中,PRC1抑制颗粒细胞所需的特定基因,从而使雌性基因调控网络失活。与女性特异性基因相关的染色质区域被polycomb介导的抑制修饰标记:prc1介导的H2AK119ub和prc2介导的H3K27me3。综上所述,本研究确定了一个关键的基于polycomb的机制,该机制抑制卵巢分化并维持成年睾丸中支持细胞的命运。
Gonadal sex determination and differentiation are controlled by somatic support cells of testes (Sertoli cells) and ovaries (granulosa cells). In testes, the epigenetic mechanism that maintains chromatin states responsible for suppressing female sexual differentiation remains unclear. Here, we show that Polycomb repressive complex 1 (PRC1) suppresses a female gene regulatory network in postnatal Sertoli cells. We genetically disrupted PRC1 function in embryonic Sertoli cells after sex determination, and we found that PRC1-depleted postnatal Sertoli cells exhibited defective proliferation and cell death, leading to the degeneration of adult testes. In adult Sertoli cells, PRC1 suppressed specific genes required for granulosa cells, thereby inactivating the female gene regulatory network. Chromatin regions associated with female-specific genes were marked by Polycomb-mediated repressive modifications: PRC1-mediated H2AK119ub and PRC2-mediated H3K27me3. Taken together, this study identifies a critical Polycomb-based mechanism that suppresses ovarian differentiation and maintains Sertoli cell fate in adult testes.
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