H3K4me3和H3K27me3在产后雷迪格细胞命运确定过程中的动态景观修饰
Jiandong Sun1,2, Xiuli Lian1,2, Shanshan Luo1
1Key Laboratory of Stem Cell Engineering and Regenerative Medicine of Fujian Province University, Fujian Medical University, Fuzhou, P. R. China.
Andrology
|December 22, 2025
概括
这项研究揭示了组织素甲基化标记H3K4me3和H3K27me3如何调节莱迪格细胞分化. 这个轴平衡了类固醇生成,并抑制了 Leydig 细胞发育中的干细胞.
科学领域:
- 生殖生物学 生殖生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 细胞分化的过程
背景情况:
- 基因组甲基化,特别是H3K4me3和H3K27me3,对于精子发生过程中的基因调节至关重要.
- 在产后莱迪格细胞分化中,H3K4me3和H3K27me3动态的确切作用尚不清楚.
研究的目的:
- 调查 H3K4me3 和 H3K27me3 在产后莱迪格细胞分化过程中的动态变化.
- 阐明控制莱迪格细胞发育的调节机制.
主要方法:
- 使用单细胞RNA-seq (scRNA-seq),CUT&Tag-seq,大量RNA-seq和免疫组织化学的综合分析.
- 在老鼠的莱迪格细胞中跨发育阶段映射特定阶段的H3K4me3和H3K27me3景观.
主要成果:
- H3K4me3在祖细胞到不成熟的莱迪格细胞分化过程中显示出二相模式 (减少然后增加),而H3K27me3则逐渐积累.
- 原生细胞中的双对应染色体域平衡增殖和分化;类固醇基因是H3K4me3-调节的.
- 在成年莱迪格细胞中,H3K4me3激活了类固醇生成和成熟标记物,而H3K27me3沉默了增殖网络.
结论:
- 一个H3K4me3/H3K27me3转录因子轴中心调节产后莱迪格细胞分化.
- 这个调节轴促进类固醇的潜力,并抑制莱迪格细胞的干细胞性质.
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