介质细胞 stromal 细胞的细胞外囊中的miR-23b-3p表达的与衰老相关的变化会影响TGFBR3信号传递
Maki Itokazu1, Toshiyuki Takehara2, Kensuke Toriumi3
1Department of Rehabilitation Medicine, Kindai University Faculty of Medicine, Osaka, Japan.
Scientific reports
|July 2, 2025
概括
介质干细胞 (MSC) 中的细胞衰老会改变细胞外囊泡 (EV) 中的微RNA (miRNA) 含量. 脱甲基化疗法可以恢复EV中的miRNA水平,从而有可能改善细胞治疗结果.
科学领域:
- 细胞生物学 细胞生物学
- 再生医学是一种再生医学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 细胞外囊泡 (EVs) 调解细胞间通信,在细胞治疗中至关重要.
- 细胞衰老会影响EV的分子载荷,影响它们的治疗潜力.
- EVs中的微RNAs (miRNAs) 调节受体细胞的功能.
研究的目的:
- 为了研究捐赠细胞衰老对EVs中miRNA配置文件的影响.
- 为了识别老年介质干细胞 (MSC) 中失调的特定miRNAs.
- 探索恢复老年MSCs在EV中的miRNA表达的策略.
主要方法:
- 从年轻和老年MSCs的EV中miRNA表达的比较.
- 在老年MSC中分析MIR23B促进剂甲基化状态.
- 用瓦尔酸 (一种去甲基化剂) 处理老化的MSC.
- 评估miR-23b-3p表达及其纳入EVs后处理的情况.
主要成果:
- 鉴定出miR-23b-3p是针对TGFBR3的关键miRNA,在老年MSC中表达减少.
- 在老年MSC中,MIR23B促进体的高甲基化导致miR-23b-3p下调.
- 瓦尔酸治疗恢复了miR-23b-3p表达和EV负载.
- 衰老改变了EV miRNA的组成,可能会损害细胞间通信.
结论:
- MSC的老化显著影响EV miRNA货物,影响治疗疗效.
- 脱甲基化是一种有希望的策略,可以增强MSC衍生的EVs的治疗潜力.
- 在EV中恢复miR-23b-3p水平可以改善细胞移植结果.
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