对Let-7的反意义寡核酸增强中细胞干细胞的治疗潜力
Dae-Won Lee1, Sungho Shin2,3, Jeong-Ho Kim4
1Catholic High-Performance Cell Therapy Center & Department of Medical Life Science, College of Medicine, The Catholic University, Seoul 06591, Republic of Korea.
International journal of molecular sciences
|May 27, 2023
概括
使用反感性寡核酸 (ASO) 抑制let-7微RNA (miRNA) 增强了中酶体 stromal 细胞 (MSC) 功能,如增殖和迁移. 这一策略提供了一种安全的,暂时的方法来提高MSC细胞治疗潜力.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 再生医学是一种再生医学.
背景情况:
- Let-7微RNAs (miRNAs) 调节关键的细胞过程,包括增殖和迁移.
- 介酶体 stromal 细胞 (MSC) 具有治疗潜力,但在细胞疗法试验中面临局限性.
- 已知LIN28激活会影响let-7 miRNA水平和细胞功能.
研究的目的:
- 调查使用反感性寡核酸 (ASO) 抑制let-7 miRNA是否可以暂时增强MSC的治疗潜力.
- 确定MSC中的特定let-7miRNA子家族,并开发有效的ASO组合.
- 为了评估MSCs在let-7抑制后的功能,蛋白质组,代谢和干性变化.
主要方法:
- 在MSC中确定关键的let-7miRNA子家族.
- 开发和应用针对选定的let-7miRNAs的反意义寡核酸 (ASO) 组合.
- 评估MSC的扩散,衰老,迁移和差异化.
- 蛋白质组分析以了解功能变化.
- 评估新陈代谢重编程,包括糖解和线粒体功能.
- 对MSC对造血原生细胞和内皮细胞影响的分析.
主要成果:
- 通过ASO介导的let-7miRNAs (anti-let7-ASOs) 的抑制增加了MSC的增殖和延迟衰老.
- 抑制的MSCs显示出增强的迁移和骨质生成差异化潜力.
- 功能变化发生在没有改变细胞命运或获得额外的干性的情况下,但与蛋白质组转移有关.
- 抑制的MSCs中的代谢重编程包括增强的糖解,减少的活性氧物种和改变的线粒体潜力.
- -7抑制的MSCs促进了造血原体的自我更新,并增强了内皮毛细血管的形成.
结论:
- 优化的ASO组合有效抑制MSC中的let-7miRNAs.
- Let-7抑制重编程MSC,增强其功能状态,以改善细胞治疗.
- 这种暂时抑制策略有望克服MSC在治疗应用中的局限性.
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