由介质干细胞分泌的外体细胞通过上调SIRT1表达来延缓大脑衰老
Xiaowen Zhang1, Te Liu1,2, Xuejia Hou1
1Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, 130000, Jilin, China.
Scientific reports
|August 14, 2023
概括
介质干细胞衍生的外体细胞 (MSC-Exos) 在对抗大脑衰老和认知衰退方面表现有前途. 这些外体激活SIRT1通路,减少老化小鼠的氧化应激和亡.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 生物医学工程 生物医学工程
背景情况:
- 人口老龄化正在增加,导致与年龄相关的神经退行性疾病的增加.
- 延缓大脑衰老和减轻认知障碍是关键的研究领域.
- 赛尔图因1 (SIRT1) 被认为是衰老过程中的关键调节剂,也是潜在的治疗标.
研究的目的:
- 为了研究介质干细胞衍生异体体 (MSC-Exos) 对认知障碍和大脑衰老的神经保护作用.
- 探索MSC-Exos行动的潜在机制,特别关注SIRT1信号通路.
- 在快速衰老的小鼠模型中评估MSC-Exos的疗效.
主要方法:
- 在体外评估MSC-Exos在BV2细胞中抗氧化损伤的神经保护能力.
- 在体内给MSC-Exos给SAMP8小鼠模型的加速大脑衰老.
- 在接受治疗的小鼠大脑中分析SIRT1基因表达,亡标志物和氧化应激水平.
主要成果:
- 在实验室中,MSC-Exos证明了神经保护作用,防止过氧化引起的氧化应激.
- 在体内,MSC-Exos显著提高了老年SAMP8小鼠大脑中的SIRT1基因表达.
- 在老鼠大脑中,MSC-Exos表现出抗亡的特性,并减少了老鼠大脑中的氧化应激.
结论:
- MSC-Exos可以作为一种新的治疗策略来缓解大脑衰老和相关的认知缺陷.
- 激活SIRT1信号通路是MSC-Exos发挥神经保护作用的关键机制.
- 在老化的大脑中,MSC-Exos显示出预防或延迟衰老的潜力.
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