单细胞多模式分析揭示了母亲糖尿病中出生缺陷的表观基因组和转录基因组基础
Tomohiro Nishino1,2, Sanjeev S Ranade1,2, Angelo Pelonero1,2
1Gladstone Institutes; San Francisco, CA, USA.
Nature cardiovascular research
|August 26, 2024
概括
孕产妇糖尿病会影响特定的胚胎细胞种群,改变它们的表观基因组,导致出生缺陷. 这项研究确定了这些发育异常背后的关键细胞机制.
科学领域:
- 发育生物学是发展生物学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因组学就是基因组学.
背景情况:
- 孕产妇糖尿病是先天性出生缺陷的重要危险因素,包括心脏和面异常.
- 具体的细胞类型和潜在的机制受到影响的孕产妇糖尿病在胚胎发育期间仍然在很大程度上是未知的.
研究的目的:
- 研究孕产妇糖尿病对胚胎原生细胞表观基因组景观的影响.
- 确定特定的细胞亚群和参与糖尿病引起的发育缺陷的分子机制.
主要方法:
- 利用多模式单细胞分析来检查心脏和面前的表观基因组变化.
- 在对母亲糖尿病暴露的反应中分析了染色质可访问性和基因表达模式.
主要成果:
- 孕产妇糖尿病选择性地改变了特定心脏和面前代子群的表观基因组景观.
- 一个表达ALX3的新型心脏前代子集表现出染色体变化并采用后部身份.
- 在第二门中,神经峰衍生细胞显示出表观遗传异常和轴向模式缺陷.
- 观察到视网红酸信号的增加与受影响的原始细胞中染色质可访问性变化相关.
结论:
- 孕产妇糖尿病在发育过程中对不同细胞类型产生高度选择性的表观遗传学后果.
- 这些表观基因组变化破坏了正常的发育模式,导致先天性异常.
- 了解这些特定的细胞和分子效应为预防糖尿病相关的先天缺陷提供了洞察力.
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