CHD7通过SOX5介导的自我激活来调节心脏神经细胞的分化
Shun Yan1, Andrey Bombin2, Weiwei Liu1
1Center for Biotechnology and Genomic Medicine, Augusta, GA 30912, USA.
iScience
|November 10, 2025
概括
由CHD7不足引起的CHARGE综合征通常涉及心脏缺陷. 失去CHD7会损害心脏神经细胞分化,但SOX5可以恢复CHD7的表达并拯救心脏发育.
科学领域:
- 发展生物学 发展生物学
- 遗传学 是一个遗传学.
- 心血管研究研究心血管研究
背景情况:
- 查奇综合征是一种复杂的遗传疾病,与先天性心脏缺陷有关.
- 它主要是由CHD7基因的哈普洛缺陷引起的.
- 心脏神经细胞 (cNCCs) 在心脏发育中起着至关重要的作用.
研究的目的:
- 研究CHD7在心脏神经顶细胞 (cNCC) 功能中的作用.
- 为了阐明导致CHARGE综合征相关心脏缺陷的细胞机制.
- 为了确定在CHARGE综合征中心血管异常的潜在治疗点.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 分析具有Chd7无活化的cNCCs.
- 对肌源性转录程序和细胞命运轨迹的分析.
- 研究CHD7-SOX5相互作用和功能救援实验.
主要成果:
- 在cNCC中Chd7的失活会通过破坏肌原转录程序来损害肌细胞分化.
- 丢失Chd7导致细胞命运轨迹的改变,并激活cNCCs中的细胞应激反应.
- CHD7与SOX5相互作用,通过保存增强剂增强自身的表达;SOX5过度表达拯救了Chd7的表达和cNCC的分化.
结论:
- CHD7对于适当的cNCC分化和功能至关重要,其损失有助于CHARGE综合征中的心脏缺陷.
- 一个SOX5介导的自我调节机制控制CHD7的表达.
- 增强SOX5-CHD7轴为CHARGE综合征中的心血管缺陷提供了潜在的治疗策略.
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