抗衰老药物防止洞穴CaV 3.2-RyR轴在旧血管光滑肌肉中的功能障碍
Jie Lin1, Weiming Guo2, Qingtian Luo3
1Cardiology Department, The first Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
Aging cell
|October 14, 2023
概括
疗法保留了T型通道 (CaV 3.2) - - 赖诺丁受体 (RyR) 轴在衰老的血管光滑肌肉细胞中. 这种干预可以通过准细胞衰老来帮助预防与年龄有关的心血管疾病.
科学领域:
- 心血管生物学 心血管生物学
- 衰老研究研究 衰老研究
- 细胞衰老 细胞衰老
背景情况:
- 衰老是心血管疾病的主要危险因素.
- 衰老会损害洞穴T型CaV 3.2-RyR轴,这对Ca2+流入至关重要,并在血管光滑肌细胞 (VSMC) 中起火.
研究的目的:
- 为了研究是否 senolytics 可以保留洞穴CaV 3.2-RyR轴在老化VSMCs.
- 评估老化药物对与年龄相关的心血管功能障碍的治疗潜力.
主要方法:
- 10个月大小的小鼠每两周服用一次老化剂尾酒 (达沙替尼 + 奎尔塞丁) 或车载药物,持续4个月.
- 来自中腔动脉的血管光滑肌细胞 (VSMC) 分析了Ca2+火花,CaV3.2表达和洞穴结构.
- 电子断层扫描和免疫光染色评估了洞穴重塑和蛋白质同定位.
主要成果:
- 老化剂治疗保留了老年VSMC中的Ca2+火花生成,即使是在洞穴中断后.
- 治疗增加了CaV 3.2的表达,并促进了适当的洞穴结构和CaV 3.2-Cav-1在老化动脉中的同定位.
- 在经过老化治疗的老年VSMC中,CaV 3.2通道功能得到维持.
结论:
- 在VSMC中洞穴CaV 3.2-RyR轴的与年龄相关的功能障碍可以通过老化剂来缓解.
- 用老化药物准细胞衰老表明有望改善与年龄相关的心血管疾病.
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