在动脉样硬化中,IRF7调节了适应不良的光滑肌肉细胞表型切换
Rundong Cai1,2, Xin Chen2, Hongxia Zhang2
1Department of Cardiology, Changzheng Hospital, Naval Medical University (Second Military Medical University), Shanghai 611230, China.
Precision clinical medicine
|February 2, 2026
概括
干扰素调节因子7 (IRF7) 驱动平滑肌细胞 (SMC) 转化为动脉样硬化斑块内的炎症细胞. 抑制IRF7可以通过防止这种不适应的表型切换来稳定脆弱的斑块.
科学领域:
- 心血管生物学 心血管生物学
- 分子医学是分子医学.
- 动脉样硬化研究 动脉样硬化研究
背景情况:
- 光滑肌细胞 (SMCs) 具有显著的可塑性,有助于动脉样硬化斑块的异质性.
- 来自SMC的巨类细胞促进斑块炎症,但这种过渡的分子驱动因素尚不清楚.
研究的目的:
- 为了确定分子调节者,控制平滑肌肉细胞在动脉生成期间的表型切换.
- 调查干扰素调节因子7 (IRF7) 在SMC转差和动脉样硬化斑块发育中的作用.
主要方法:
- 从谱系追踪小鼠中重新分析单细胞RNA测序数据.
- 基因调节网络推断和波模型.
- 在ApoE-/-小鼠的体内研究和使用AAV载体的SMC特定的Irf7敲击.
主要成果:
- SMCs通过一个中间状态转化为亲炎性巨细胞,由IRF7.7调节.
- 在人类和小鼠的动脉样硬化斑块中,IRF7被上调,与炎症相关.
- 在SMC中Irf7的降低减弱了斑块的进展,减少了死核,稳定了纤维状盖.
结论:
- 在动脉样硬化中,IRF7是不适应性SMC表型切换的关键调节者.
- IRF7将SMC驱动到一种亲炎性巨类状态,促进斑块的不稳定性.
- 向IRF7可能为稳定易受动脉样硬化斑块提供治疗策略.
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