在小鼠精子发生过程中,在半分裂前期I期间,基因素 lysine 乳酸化中的动态变化
Xiaoyu Zhang1,2, Yan Liu1, Ning Wang1,2,3
1Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160.
概括
乳酸盐在雄性半变异过程中诱导了基因激素的乳化,调节了基因表达和重组. 这种由HBO1介导的表观遗传修饰对于成功的精子生成和男性生育能力至关重要.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 精子发生是精子生成.
- 分子生物学分子生物学
背景情况:
- 男性生殖细胞利用乳酸作为主要的能量来源.
- 希斯酸乳化是一种由乳酸诱导的新兴表观遗传修饰.
研究的目的:
- 为了研究鼠标雄性半导体变异过程中基因素乳酸的作用和动态.
- 阐明基因表达和再组合中组织激素乳酸化在介质基因表达和再组合中的功能意义.
主要方法:
- 在小鼠精子生成过程中对基因组H4-K8乳酸化 (H4K8la) 的全基因组分析.
- 对H4K8la与基因促进体,重组热点和凝聚性位点的关联进行分析.
- 在试管婴儿乳化试验中使用乳酸转移酶HBO1.
- 药理上抑制小鼠中的HBO1,以评估其在体内对H4K8la和半分裂的影响.
主要成果:
- 动态基因组乳化,特别是H4K8la,在化预相I期间被观察到,在zygotene阶段达到峰值.
- H4K8la标记了参与半分裂的活跃基因促进体,并且在重组热点和半分裂凝聚位点上得到丰富.
- 乳酸诱导的H4K8la调高了关键的介质基因,并在重组部位与PRDM9相互作用.
- 乳酸转移酶HBO1在介质生殖细胞中表达,直接诱导H4K8la,其抑制破坏了介质变化.
结论:
- 希斯乳化是一种动态的表观遗传机制,调节男性介质基因表达和重组.
- 通过HBO1介导的组织素乳酸化对于适当的精子生成和男性生育能力至关重要.
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