环林A通过促进炎症和血管光滑肌肉细胞增殖来调解血管重塑
Kimio Satoh1, Tetsuya Matoba, Jun Suzuki
1Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, 601 Elmwood Ave, Rochester, NY 14642, USA.
环素A (CyPA) 通过促进光滑肌肉细胞的增殖和炎症来驱动血管重塑. 在淘汰赛小鼠中减少CyPA减少了血管厚,而过度表达则使其恶化,突显了CyPA在心血管疾病中的作用.
科学领域:
- 心血管生物学 心血管生物学
- 血管生物学 血管生物学
- 分子医学是分子医学.
背景情况:
- 氧化压力有助于心血管疾病.
- 环素A (CyPA) 由血管光滑肌细胞 (VSMC) 分泌,并在体外促进VSMC增殖和炎症细胞迁移.
- 在血管功能中CyPA的体内作用是未知的.
研究的目的:
- 在体内调查CyPA在流量介导血管改造中的作用.
- 确定CyPA是否有助于内膜和中膜增生,VSMC增殖和炎症细胞迁移.
主要方法:
- 使用了CyPA淘汰赛小鼠,野生型小鼠和VSMC特定的CyPA过度表达的转基因小鼠 (VSMC-Tg).
- 通过完整的动脉绑定诱导血管重塑.
- 评估了CyPA表达,活性氧物种水平,内膜/介质增生,炎症细胞透 (使用Ki67) 和VSMC增殖.
主要成果:
- Carotid 绑定增加了野生型和VSMC-Tg小鼠的CyPA表达.
- CyPA表达与内膜/中膜增生,VSMC增殖和炎症细胞迁移有很强的相关性.
- 在CyPA淘汰赛中,小鼠的血管改造减少,而VSMC-Tg小鼠的血管改造加剧.
结论:
- CyPA对于调节流量介导血管改造至关重要.
- 赛帕促进VSMC迁移,增殖和炎症细胞积累,以应对低流量.
- 向CyPA可能为预防心血管疾病中的血管改造和内密形成提供治疗潜力.
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