黑色素减轻氧化应激诱导的线粒体功能障碍通过改善NAD+hDPSCs的恒温为基于细胞的疗法
Xiu Peng1, Li Zhao1, Jiale Wang1
1State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China.
Journal of pineal research
|May 20, 2025
概括
黑素通过改善NAD+代谢和线粒体功能,减少氧化应激和细胞损伤,在1型糖尿病模型中保护人类牙纸干细胞 (hDPSCs). 这增强了干细胞治疗的潜力.
科学领域:
- 干细胞生物学 干细胞生物学
- 再生医学是一种再生医学.
- 生物化学 生物化学
背景情况:
- 人类牙纤维干细胞 (hDPSCs) 由于自我更新和多重分化能力,具有显著的治疗潜力.
- 在体内微环境中的氧化应激会损害hDPSCs的治疗效果.
- 1型糖尿病 (T1DM) 与细胞代谢受损和氧化应激增加有关.
研究的目的:
- 为了研究黑激素 (Mel) 对移植到T1DM大鼠模型中的hDPSCs的保护作用.
- 阐明底层机制,重点关注NAD+代谢和线粒体功能.
主要方法:
- 使用的是1型糖尿病 (T1DM) 的老鼠模型.
- 移植的hDPSC和注射的美拉托尼.
- 评估了NAD+代谢,线粒体功能,活性氧物种 (ROS) 水平,细胞衰老和亡.
主要成果:
- 在老鼠中,T1DM诱导了氧化应激,损害了NAD+代谢和线粒体功能.
- 与hDPSCs移植结合的黑素通过NAMPT-NAD+-SIRT1轴重新平衡了NAD+平衡.
- 黑色素通过改善NAD+水平和线粒体功能,降低了ROS,减轻了暴露于过氧化的hDPSC中的衰老和亡.
结论:
- 黑素为hDPSCs提供了针对氧化应激和代谢功能障碍的显著保护.
- 黑色素在T1DM环境中增强hDPSCs的活力和功能.
- 黑素有望改善再生医学和组织工程中的干细胞治疗结果.
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