希斯氨基氨酸甲基化机制 细胞应激的动态变化
Xiao-Guang Ren1, Wei Li1, Wen-Xuan Li1
1Laboratory of RNA Epigenetics, Institutes of Biomedical Sciences & Shanghai Public Health Clinical Center, Shanghai Medical College, Fudan University, Shanghai 200032, China.
International journal of molecular sciences
|July 27, 2024
概括
DNA 损伤引发了 histone H3R26 对称二甲基化 (H3R26me2s) 和 H3K27 乙化减少. 这表明H3R26me2s和H3K27ac在基因调节中的交叉声.
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.
- 分子生物学分子生物学
- 基因规则 基因规则
背景情况:
- 基因组氨酸甲基化对发育和基因调节至关重要.
- 在细胞压力,特别是DNA损伤期间,其动态尚不清楚.
- 基因组修饰之间的相互作用是研究的一个关键领域.
研究的目的:
- 为了研究DNA损伤后的氨酸组素甲基化变化的变化.
- 为了探索素阿尔金因甲基化与其他素标记之间的关系.
主要方法:
- 针对DNA损伤的反应中,对基因素修饰的全球分析.
- 染色体免疫沉和质谱技术可能被使用 (推断).
- 基因组标记的比较基因组分布分析.
主要成果:
- 在DNA损伤时观察到基因素H3R26对称二甲基化 (H3R26me2s) 的全球减少.
- 检测到H3K27部位的低乙化作为对DNA损伤的反应.
- H3R26me2s和H3K27ac表现出类似的基因组分布模式和对H3K27me3.3的对抗性.
- 有证据表明,素脱甲基酶1 (HDAC1) 的招募来调解H3K27脱甲基化.
结论:
- DNA损伤会导致基因组氨酸甲基化和乙化发生显著变化.
- H3R26me2s和H3K27ac与H3K27me3.3具有对抗性的关系.
- HDAC1可能在H3R26me2s和H3K27ac.ac.之间的交叉语音中发挥作用.
- 这些发现突显了H3R26me2s和H3K27ac在基因表达调节中的交叉声.
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