多omics整合揭示了H3K27ac在牛内部细胞质中的代谢控制†
Aldcejam Martins da Fonseca Junior1, Jessica Ispada2, Camila Bruna Lima3
1Laboratory of Embryonic Metabolism and Epigenetics, Federal University of ABC, Santo Andre, Brazil.
Biology of reproduction
|December 8, 2025
概括
早期的胚胎发育涉及表观遗传重编程. 这项研究表明,改变酸盐代谢如何影响牛胚胎中的素乙化 (H3K27ac),影响细胞分化和代谢.
科学领域:
- * 发育生物学 发育生物学
- * 表观遗传学 是一种表观遗传学.
- * 代谢调节 代谢调节 代谢调节
背景情况:
- *表观遗传重编程对于早期胚胎发育至关重要,影响细胞特异化和分化.
- *代谢途径,特别是酸盐代谢,越来越多地被认为是对表观遗传调节的作用.
- *了解这些联系对于改善体外胚胎培养和预测长期后代健康至关重要.
研究的目的:
- * 调查在植入前的牛胚胎中酸盐代谢和表观遗传修饰之间的关系.
- * 确定操纵酸盐代谢如何影响基因素乙化模式,特别是H3K27ac.
- * 探索这些表观遗传变化对细胞过程的功能后果.
主要方法:
- *从第5天开始,牛胚胎与二乙酸 (DCA) 进行培养,以增强酸转化为乙烯基-CoA或酸 (IA) 抑制糖解.
- *分析了H3K27乙化水平和染色体结合模式,分析了胚芽细胞的内细胞质量.
- *整合性分析将分子数据与H3K27ac染色体状态相关联.
主要成果:
- * DCA 和 IA 治疗都改变了 H3K27 乙化水平和染色质结合模式.
- *与脂质代谢途径相关的DCA治疗.
- *IA治疗与亡和代谢途径相关,表明明显的代谢-表观遗传交叉.
结论:
- *能量代谢显著影响早期牛胚胎中的表观遗传重编程.
- *H3K27ac作为一个关键的表观遗传标记,在胚胎培养过程中响应环境变化.
- *代谢干预可以改变表观遗传情景,对发育结果产生潜在影响.
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