细胞外Peroxiredoxin 5通过TLR4/MyD88通路加剧动脉样硬化
Hyae Yon Kweon1, Eun Ju Song1, Se-Jin Jeong2
1Heart-Immune-Brain Network Research Center, Department of Life Science and College of Natural Sciences, Ewha Womans University, Seoul, 03760, Republic of Korea.
Atherosclerosis
|November 16, 2024
概括
细胞外Peroxiredoxin 5 (PRDX5) 通过激活内皮细胞中的炎症通路来促进动脉样硬化. 降低PRDX5水平降低了斑块形成和血管炎症,为动脉样硬化提供了潜在的治疗点.
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
- 氧化压力研究研究 氧化压力研究
背景情况:
- 动脉样硬化涉及炎症和氧化应激,Peroxiredoxin 5 (PRDX5) 参与调节这些过程.
- 对于PRDX5在动脉样硬化病原发生的具体作用,特别是血管内皮功能障碍,仍然在很大程度上未被定义.
研究的目的:
- 研究PRDX5在动脉样硬化的发展和进展中的作用.
- 阐明PRDX5影响血管炎症和斑块形成的潜在分子机制.
主要方法:
- 在体内研究中使用了60周老的Apolipoprotein E淘汰赛 (ApoE-/-) 和Prdx5-/-; ApoE-/-小鼠.
- 在体外实验中,使用氧化LDL (oxLDL) 刺激人类静脉内皮细胞 (HUVEC),并评估PRDX5的淘汰效应.
- 分析了包括TLR4/MyD88/NF-κB和P38在内的关键信号通路.
主要成果:
- 动脉样硬化病在人类和小鼠中都显示出PRDX5表达的升高.
- Prdx5-/-; ApoE-/-小鼠表现出减少斑块形成,巨细胞积累和血管炎症.
- 在oxLDL刺激的HUVEC中,PRDX5敲击降低了单细胞粘附和迁移,表明免疫反应降低.
- PRDX5缺乏抑制了TLR4/MyD88/NF-κB和P38信号通路.
结论:
- 细胞外PRDX5通过促进内皮炎症和巨细胞积累而加剧动脉样硬化.
- PRDX5激活TLR4/MyD88/NF-κB和P38信号通路,有助于疾病的进展.
- 针对细胞外PRDX5可能为动脉样硬化提供一种新的治疗策略.
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