在TBX1网络中的染色体调节器在22q11.2DS中赋予了干性心脏缺陷的风险
Yingjie Zhao1, Yujue Wang1, Lijie Shi1
1Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
NPJ genomic medicine
|July 18, 2023
概括
在22q11.2删除综合征 (22q11.2DS) 中鉴定了干性心脏缺陷的遗传修饰剂. 染色体调节基因对TBX1网络产生影响,这表明先天性心脏病 (CHD) 病因学的共享机制.
科学领域:
- 遗传学 是一个遗传学.
- 发展生物学 发展生物学
- 心脏病学 心脏病学
背景情况:
- 影响干区域的先天性心脏病 (CHD) 在22q11.2删除综合征 (22q11.2DS) 中普遍存在,这是一个具有相对遗传同质性的疾病.
- TBX1基因的哈普洛缺陷是22q11.2DS的主要原因,这表明TBX1在状心脏发育中的作用.
研究的目的:
- 在22q11.2DS.DS患者的TBX1基因网络中识别干缺陷的遗传修饰剂.
- 研究染色体调节基因在22q11.2DS相关性和零星性心血管疾病的病因学中的作用.
主要方法:
- 全基因组测序分析罕见的,预测有损害的变异在456 22q11.2DS病例和537对照的干缺陷和控制.
- 基因组丰富分析以确定与干缺陷相关的功能基因类别.
- 通过文献审查验证候选基因,并检查模型生物体中与TBX1的相互作用.
主要成果:
- 在8.5%的22q11.2DS病例中,确定了37个染色体调节基因,包括EP400,KAT6A,KMT2C,KMT2D,NSD1,CHD7和PHF21A,作为潜在的干性心脏缺陷修饰剂.
- 许多已识别的染色体基因也是零星性心血管疾病的危险因素,表明共享的遗传途径.
- 同表达分析显示,这些染色质基因与心脏前细胞中的TBX1相互作用,支持它们在同一遗传网络中的作用.
结论:
- 染色体调节基因的干扰显著影响TBX1网络,作为22q11.2DS和零星性CHD的遗传修饰剂.
- 这些发现突出了涉及TBX1基因网络在先天性心脏缺陷发展中的共同病因机制.
- 准染色体调节通路可能为心血管疾病提供新的治疗策略.
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