向菲拉明A降低了巨细胞活动和动脉样硬化
Sashidar Bandaru1, Chandu Ala1, Reza Salimi1
1Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine (S.B., C.A., R.S., S.D., J.V.d.E., E.L., L.M.A.), Sahlgrenska Academy, University of Gothenburg, Sweden.
Circulation
|April 25, 2019
概括
巨细胞中的胺A (FLNA) 对于细胞功能至关重要,并减少动脉样硬化. 抑制FLNA裂变可能为治疗这种心血管疾病提供新的治疗策略.
科学领域:
- 心血管生物学
- 细胞信号传输
- 免疫学
背景情况:
- 菲拉明A (FLNA) 是一种调节细胞运动的活性蛋白.
- 在动脉形成过程中,FLNA在巨细胞中的特定作用在很大程度上尚未被探索.
研究的目的:
- 研究巨特定FLNA在动脉样硬化的作用.
- 在动脉样硬化治疗中探索FLNA的治疗潜力.
主要方法:
- 在人类动脉样硬化斑块中分析FLNA表达.
- 产生FLNA缺乏巨细胞的小鼠.
- 使用骨髓移植和病毒基因传递研究了小鼠模型中的动脉样硬化进展.
- 研究了calpain抑制剂calpeptin对FLNA分裂和巨细胞功能的影响.
主要成果:
- 大细胞FLNA表达在先进的人类动脉样硬化斑块中升高.
- 巨细胞中的FLNA缺乏减少了增殖,迁移,泡细胞的形成和脂质的吸收,同时增加了脂质的分泌.
- 在小鼠模型中,FLNA裂变的基因失活或药理抑制显著降低了动脉样斑块大小.
- 它的抑制降低了STAT3的酸化和IL-6的分泌.
结论:
- 在巨细胞功能和动脉形成中,FLNA起着至关重要的作用.
- 针对FLNA,特别是其依赖于calpain的裂,为动脉样硬化提供了一个有前途的治疗途径.
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