IFNγ激活了心血管内皮中的类似免疫的调节网络
bioRxiv : the preprint server for biology
|May 15, 2024
概括
干扰素玛 (IFNγ) 在心脏原生细胞中触发一种类似免疫反应,可能通过改变基因调节将遗传风险变异与心脏病联系起来.
科学领域:
- 心血管生物学 心血管生物学
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
背景情况:
- 心脏病中促炎性细胞因子反应的调节机制尚不清楚.
- 干扰素 (IFNγ) 是一种关键的促炎细胞因子,与各种疾病有关.
研究的目的:
- 模拟和理解人类心血管原生细胞 (CVPC) 对IFNγ的反应.
- 研究IFNγ在心脏细胞中建立的调节网络.
- 探索IFNγ诱导的调节元件与心脏病遗传风险之间的联系.
主要方法:
- 从用IFNγ治疗的iPSC衍生CVPC和对照生成的RNA测序和ATAC测序数据.
- 分析了转录和染色质可访问性的变化.
- 与全基因组关联研究 (GWAS) 对心脏病风险变异相关联的确定的监管元素.
主要成果:
- 在CVPCs中,IFNγ治疗诱导了与生俱来的免疫细胞类似的转录特征.
- IFNγ将CVPC转录基因组转移到冠状动脉和主动脉的样本上,从而对内皮细胞基因进行上调.
- IFNγ作为一种强大的染色体重塑剂,建立了一个IRF-STAT免疫调节网络.
- 八种常见心脏病的11个GWAS风险变异重叠与IFNγ上调的ATAC-seq峰值.
结论:
- IFNγ在心血管内皮中激活了一个类似免疫的调节网络.
- 由IFNγ调节的特定调节元件可能有助于常见心脏病的发病.
- 这项研究提供了有关炎症和心血管疾病遗传倾向的分子机制的见解.
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