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通过MAPK信号传递,STM2457降低了m6A甲基化,以减少西斯胺诱导的耳毒性
Jiahao Liao1, Xingxing Wu1, Qingdong Zeng2
1Department of Otolaryngology, Shenzhen Institute of Translational Medicine, Shenzhen Key Laboratory of Nanozymes and Translational Cancer Research, Medical Innovation Technology Transformation Center, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen 518035, China; School of Pharmacy, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong 518055, China.
Biochemical pharmacology
|February 21, 2025
概括
使用STM2457降低RNA甲基化,可以防止西斯普拉丁诱导的耳毒性和毛发细胞损失. 这项研究揭示了一种涉及基因激活蛋白激酶通路的机制,为预防听力损失提供了潜在的治疗策略.
科学领域:
- 耳毒性研究研究
- 通过RNA甲基化.
- 癌症治疗方法 癌症治疗方法
背景情况:
- 西斯普拉丁化疗可以导致不可逆转的听力损失 (耳毒性).
- N6-甲基氨酸 (m6A) 甲基化是一种关键的RNA修饰.
- 调查m6A在西斯普拉丁诱导的耳毒性中的作用对于制定保护策略至关重要.
研究的目的:
- 为了研究METTL3抑制剂STM2457对西斯胺诱导的耳毒性的作用,使用实验室内耳扩展器.
- 探索降低RNA m6A甲基化的潜力,以此作为防治西斯普拉丁引起的听力损失的保护措施.
主要方法:
- 作为一个模型系统,使用了体外耳扩展剂.
- 施用STM2457预处理,随后暴露于西斯.
- 评估了活性氧物种 (ROS) 积累,毛细胞 (HC) 损失,亡 (TUNEL标记) 和蛋白质表达 (BAX,BCL-XL).
- 进行了转录基因分析,以确定涉及的信号通路.
主要成果:
- 在STM2457的预处理中,可显著降低ROS积累和毛细胞损失.
- 细胞亡显著降低,通过减少TUNEL标签和改变BAX/BCL-XL比率来表明.
- 转录组分析显示了线粒激活蛋白激酶 (MAPK) 信号通路的丰富.
- 通过MAPK通路的激活,可以抵消STM2457在西斯治疗的HC中所产生的保护作用.
结论:
- 通过STM2457减少RNAm6A甲基化,可以防止西斯胺诱导的耳毒性和毛细胞死亡.
- 保护机制涉及缓解ROS积累和亡.
- 该MAPK途径在调节STM2457的疗效方面发挥着至关重要的作用,突出了潜在的治疗标.
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