人类动脉血管系统的细胞和转录组图谱
Quanyi Zhao1, Albert Pedroza2, Disha Sharma1
1Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
Cell genomics
|October 14, 2025
概括
了解动脉疾病风险需要探索细胞差异. 这项研究揭示了由胚胎起源影响的纤维细胞和光滑肌肉细胞 (SMC) 基因表达模式预测疾病易感性,突出了非编码RNAs的新角色.
科学领域:
- 心血管生物学 心血管生物学
- 基因组学就是基因组学.
- 细胞异质性 细胞异质性
背景情况:
- 动脉段表现出不同的疾病易感性,其潜在机制在很大程度上是未知的.
- 现有的研究缺乏对健康动脉中细胞特异性和细分变异的全面理解.
研究的目的:
- 创建一个跨越多个细分的健康人类动脉细胞的转录和空间地图.
- 阐明不同动脉段的差异性疾病倾向背后的机制.
主要方法:
- 人类动脉细胞的转录和空间地图集的编制.
- 对细胞特异性和细分基因表达异质性的分析.
- 在特定的细胞类型中研究与疾病相关的基因位点丰富.
- 探索非编码转录组变异,包括长非编码RNA (lncRNAs).
主要成果:
- 在动脉中识别出刻板的,细胞特异的和细分的异质性,这些异质性不能通过常见标记来辨别.
- 发现动脉细胞的身份编码在纤维细胞和光滑肌肉细胞 (SMC) 转录组中.
- 观察到纤维细胞基因表达不成比例地丰富了疾病基因,这表明它在疾病风险中起着关键作用.
- 确定动脉细胞由胚胎起源而不是解剖位置聚集在一起.
- 在成年纤维细胞和SMC中发现了与疾病相关的持续发育转录因子.
- 揭示了非编码转录基因组异质性与蛋白质编码转录基因组异质性竞争, lncRNAs丰富了血管疾病的遗传信号.
结论:
- 动脉异质性是复杂的,涉及蛋白质编码和非编码元素.
- 纤维细胞在血管疾病风险中扮演着重要的,未被认可的角色.
- 发育转录因子和lncRNAs代表了血管疾病的潜在治疗点.
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