心脏纤维细胞中的蛋白质组变化:从实验性心肌梗塞和临床缺血性心肌病的洞察力
Adam Russell-Hallinan1, Claire Tonry1, Lauren Kerrigan1
1Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast BT9 7BL, Northern Ireland, UK.
International journal of molecular sciences
|May 7, 2025
概括
心脏病发作小鼠的心脏纤维细胞显示出显著的蛋白质变化,对纤维化变得更加敏感. 细胞外矩阵蛋白质的这些变化可能导致心脏重塑和缺血性心脏病中的功能障碍.
科学领域:
- 心血管生物学 心血管生物学
- 蛋白质组学是指蛋白质组学.
- 纤维化研究 纤维化研究
背景情况:
- 缺血性心脏病 (IHD) 导致病态心脏重塑和心力衰竭 (HF).
- 了解心肌梗塞 (MI) 后心脏纤维细胞的变化对于IHD进展至关重要.
- 纤维细胞在细胞外基质 (ECM) 重塑过程中起着关键作用.
研究的目的:
- 在实验性心肌梗塞 (MI) 之后,研究心脏纤维细胞中的蛋白质变化.
- 为了确定转化生长因子-β (TGF-β) 对心脏纤维细胞的作用,从MI小鼠.
- 为了验证从患有缺血性心肌病 (ISCM) 患者的人类组织中发现的结果.
主要方法:
- 在雌性C57BL6小鼠中诱导的实验性心肌梗塞 (MI).
- 用TGF-β对心脏纤维细胞进行隔离和体外治疗.
- 高通量液体染色学-并联质谱学 (LC-MS/MS) 蛋白质组分析.
- 使用人类左心室组织的质谱数据进行验证 (ISCM与非失败的NF).
主要成果:
- 在小鼠心脏纤维细胞中观察到显著的蛋白质表达变化在MI后1个月.
- 治疗TGF-β显著改变了MI小鼠的纤维细胞,表明敏感性增加.
- 用TGF-β治疗的MI纤维细胞中的改变的细胞外基质 (ECM) 蛋白与心脏重塑有关.
- 在小鼠MI纤维细胞和人类ISCM组织中,烯酸氧化酶 (Lox) 蛋白水平发生了显著的变化.
结论:
- 从MI小鼠中分离出的心脏纤维细胞在TGF-β刺激时表现出对病原性特征的敏感性增加.
- 特定的ECM蛋白质被改变,可能导致MI相关的心脏功能障碍.
- 这些发现强调了纤维细胞激活和ECM重塑在IHD进展中的作用.
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