端粒酶mRNA疗法可以保护人体皮肤免受辐射引起的DNA损伤
Shuang Li1, David F Chang1, Karem A Court2
1Department of Cardiovascular Sciences, Houston Methodist Hospital, Houston, TX 77030, USA.
Molecular therapy : the journal of the American Society of Gene Therapy
|September 17, 2025
概括
端粒逆转录酶 (TERT) 的mRNA预处理保护皮肤细胞免受辐射损伤. TERT增强了DNA修复并减少了细胞死亡,为辐射诱导的皮肤损伤提供了潜在的治疗方法.
科学领域:
- 在瘤学瘤学.
- 辐射瘤学 辐射瘤学
- 皮肤病学 皮肤病学
背景情况:
- 放射治疗会在健康的皮肤细胞中引起DNA损伤,导致基因组不稳定性和潜在的二次癌症.
- 目前的治疗方法缺乏FDA的批准,用于预防或治疗辐射引起的皮肤损伤.
- 电离辐射诱导剂量依赖的基因组和线粒体DNA损伤,触发皮肤细胞的亡.
研究的目的:
- 研究编码端粒酶逆转录酶 (TERT) 的mRNA对辐射诱导的皮肤损伤的保护作用.
- 阐明TERT影响细胞在辐射暴露后恢复的机制.
- 探索TERT作为减轻辐射诱导皮肤损伤的潜在治疗剂.
主要方法:
- 主要的人类皮肤细胞和组织暴露在电离辐射中.
- 用mRNA编码端粒酶逆转录酶 (TERT) 进行预治疗.
- 评估了DNA损伤,亡,线粒体反应性氧物种 (ROS) 和DNA修复途径.
- 在实验期间,对端粒长度进行了监测.
主要成果:
- TERT mRNA预处理显著减少了辐射诱导的基因组和线粒体DNA损伤.
- 在暴露于辐射后,TERT预治疗降低了皮肤细胞中原发性细胞的亡.
- 机理学研究显示增强同源重组修复和减少线粒体ROS.
- 在实验时间范围内,这些保护作用发生在没有延长端粒长度的情况下.
结论:
- TERT mRNA预处理为预防辐射引起的皮肤损伤提供了一个有希望的策略.
- TERT在加速细胞从辐射损伤中恢复方面表现出非正规的功能.
- TERT可能代表了一种新的治疗方法,以减轻放射治疗的副作用.
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