在异常性肺动脉高血压中识别STIM1基因的非编码功能调节变异
Bingxun Liu1,2, Cen-Jin Wen3,4, Guangyuan Zhou1,2
1Department of Pathophysiology, School of Basic Medicine (B.L., G.Z., Z.W., T.Z., Y.Z., S.Q., L.Z., Q.H.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
在STIM1中,有三种非编码变异与异常性肺动脉高血压 (PAH) 相关. 一种变体rs1561876-G增强了STIM1的转录活性,促进了细胞增殖和信号传递,这表明它在PAH发展中发挥了作用.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 心血管研究研究心血管研究
背景情况:
- STIM1 (流体相互作用分子1) 在信号传递中起着至关重要的作用,并与肺动脉高血压 (PAH) 有关.
- STIM1的失调有助于肺动脉血管收缩,光滑肌肉细胞增殖和PAH的发展.
研究的目的:
- 确定STIM1中可能影响其转录调节的非编码变异在异常性PAH中.
- 在PAH病原发生的背景下,研究已识别的STIM1变异的功能后果.
主要方法:
- 生物信息学分析和一项匹配的病例控制研究,涉及242名特异性PAH患者和414名健康对照.
- 使用桑格序列测序对非编码变体的基因定型.
- 功能验证包括光酶记者检测,qPCR,西斑,EDU检测,以及细胞系和肺动脉光滑肌细胞中的细胞内测量.
主要成果:
- 三种非编码变体 (rs3794050,rs7934581,rs1561876) 与异常性PAH显著相关.
- 生物信息学分析表明,这些变体会影响STIM1增强器功能或miRNA结合.
- 变种rs1561876-G在各种条件下表现出增加的转录活性,增强了细胞内信号传递,并促进了肺动脉光滑肌肉细胞的增殖.
结论:
- 已识别的STIM1非编码变异,特别是rs1561876,可能与异常PAH的发展有关.
- 这些变异可以作为PAH风险和预后的预测标记.
- 对这些变体的进一步研究可能会揭示PAH的新型治疗点.
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