中国神经再生研究(英文版) ›› 2025, Vol. 20 ›› Issue (3): 887-899.doi: 10.4103/NRR.NRR-D-23-01592

• 原著:退行性病与再生 • 上一篇    下一篇

RNA修饰诱导剂Salsolinol通过YAP1和自噬介导多巴胺能神经元死亡

  

  • 出版日期:2025-03-15 发布日期:2024-06-26
  • 基金资助:
    国家自然科学基金项目(82271283,91854115,31970044);北京市自然科学基金项目(7202001);北京市教委科研项目(KM202010005022)

Salsolinol as an RNA m6A methylation inducer mediates dopaminergic neuronal death by regulating YAP1 and autophagy

Jianan Wang1, #, Yuanyuan Ran2, #, Zihan Li1, Tianyuan Zhao1, Fangfang Zhang1, Juan Wang1, *, Zongjian Liu2, *, Xuechai Chen1, *   

  1. 1Beijing International Science and Technology Cooperation Base for Antiviral Drugs, College of Chemistry and Life, Beijing University of Technology, Beijing, China; 2Department of Rehabilitation, Beijing Rehabilitation Hospital, Capital Medical University, Beijing, China
  • Online:2025-03-15 Published:2024-06-26
  • Contact: Juan Wang, PhD, juanwang@bjut.edu.cn; Zongjian Liu, PhD, liuzj888@ccmu.edu.cn; Xuechai Chen, PhD, chenxuechai@bjut.edu.cn.
  • Supported by:
    This study was supported by the National Natural Science Foundation of China, Nos. 82271283 (to XC), 91854115 (to JW), 31970044 (to JW); the Natural Science Foundation of Beijing, No. 7202001 (to XC); and the Scientific Research Project of Beijing Educational Committee, No. KM202010005022 (to XC).

摘要:

Salsolinol(1-甲基-6,7-二羟基-3,4-二氢异喹啉)是一种邻苯二酚类四氢异喹啉,其结构与导致帕金森病的环境毒素MPTP相似,因此也会引起神经毒性。然而,Salsolinol介导多巴胺能神经元死亡的机制尚不清楚。此次实验发现,Salsolinol可显著提高PC12细胞中N6甲基腺苷(m6A)RNA甲基化的整体水平,显著抑制m6A去甲基化酶FTO和ALKBH5的表达。RNA测序结果表明,Salsolinol可通过调节RNA甲基化介导Hippo信号通路,从而发挥神经毒性作用。实验还发现m6A阅读器YTHDF2可促进含m6A的Yap1 mRNA的降解,而Yap1是Hippo信号通路的下游关键效应子。此外,YAP1的下调也可促进自噬,表明YAP1和自噬的相互调节可以导致神经毒性。这些发现显示了Salsolinol对m6A RNA甲基化的影响,并揭示了Salsolinol可作为RNA甲基化诱导剂,通过YAP1和自噬介导多巴胺能神经元死亡。总之,这项研究1深入了解了邻苯二酚异喹啉药物的神经毒性作用,并可为进一步确定RNA甲基化在帕金森病发病中的作用机制提供参考。

http://orcid.org/0009-0002-9208-7985 (Juan Wang); http://orcid.org/0000-0003-4685-1057 (Zongjian Liu); http://orcid.org/0000-0001-8539-451X (Xuechai Chen)

关键词: Salsolinol, N6甲基腺苷(m6A), RNA甲基化, FTO, ALKBH5, YAP1, Hippo通路, 自噬, YTHDF2, 帕金森病

Abstract: Salsolinol (1-methyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline, Sal) is a catechol isoquinoline that causes neurotoxicity and shares structural similarity with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine, an environmental toxin that causes Parkinson’s disease. However, the mechanism by which Sal mediates dopaminergic neuronal death remains unclear. In this study, we found that Sal significantly enhanced the global level of N6-methyladenosine (m6A) RNA methylation in PC12 cells, mainly by inducing the downregulation of the expression of m6A demethylases fat mass and obesity-associated protein (FTO) and alkB homolog 5 (ALKBH5). RNA sequencing analysis showed that Sal downregulated the Hippo signaling pathway. The m6A reader YTH domain-containing family protein 2 (YTHDF2) promoted the degradation of m6A-containing Yes-associated protein 1 (YAP1) mRNA, which is a downstream key effector in the Hippo signaling pathway. Additionally, downregulation of YAP1 promoted autophagy, indicating that the mutual regulation between YAP1 and autophagy can lead to neurotoxicity. These findings reveal the role of Sal on m6A RNA methylation and suggest that Sal may act as an RNA methylation inducer mediating dopaminergic neuronal death through YAP1 and autophagy. Our results provide greater insights into the neurotoxic effects of catechol isoquinolines compared with other studies and may be a reference for assessing the involvement of RNA methylation in the pathogenesis of Parkinson’s disease.

Key words: ALKBH5, autophagy, FTO, Hippo pathway, m6A, Parkinson’s disease, RNA methylation, salsolinol, YAP1, YTHDF2