中国神经再生研究(英文版) ›› 2023, Vol. 18 ›› Issue (11): 2514-2519.doi: 10.4103/1673-5374.371381

• 原著:退行性病与再生 • 上一篇    下一篇

雷帕霉素对帕金森病的神经保护:通过激活自噬通路抑制铁死亡

  

  • 出版日期:2023-11-15 发布日期:2023-05-05

Rapamycin reverses ferroptosis by increasing autophagy in MPTP/MPP+-induced models of Parkinson’s disease

Tongyu Liu1, 2, #, Peihan Wang1, 2, #, Huan Yin1, 2, Xiangfei Wang3, Jing Lv1, 2, Jiang Yuan1, Jing Zhu1, 2, 3, *, Yunfu Wang1, 2, *   

  1. 1Department of Neurology, Affiliated Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China; 2Institute of Neuroscience, Hubei University of Medicine, Shiyan, Hubei Province, China; 3Wudang Mountain Hospital Area of Taihe Hospital, Affiliated Hospital of Hubei University of Medicine, Shiyan, Hubei Province, China
  • Online:2023-11-15 Published:2023-05-05

摘要:

自噬诱导剂雷帕霉素对帕金森病有神经保护作用,但作用机制尚不明确。铁死亡是一种非典型的细胞死亡方式,其在帕金森病的病理机制中起着重要作用。为探讨帕金森病中雷帕霉素与铁死亡之间的联系,实验以雷帕霉素干预1-甲基-4-苯基-1,2,3,6-四氢吡啶诱导的帕金森病小鼠模型和1-甲基-4-苯基吡啶离子诱导的帕金森病细胞模型。结果显示,雷帕霉素可有效改善帕金森病模型小鼠的行为学表现,减少黑质致密部多巴胺神经元的丢失和铁死亡相关指标谷胱甘肽过氧化物酶4、溶质载体家族7成员11、谷胱甘肽、丙二醛和活性氧的表达。雷帕霉素可以提高帕金森病细胞模型的存活率,并减少的铁死亡。铁死亡诱导剂RSL3和自噬抑制剂3-MA对雷帕霉素的神经保护作用有拮抗作用。因此,通过激活自噬来抑制铁死亡是雷帕霉素对PD发挥神经保护作用的机制。调节铁死亡和自噬可能成为帕金森病药物治疗的干预靶点。

https://orcid.org/0000-0002-5794-9634 (Yunfu Wang); https://orcid.org/0000-0002-2860-3685 (Jing Zhu)

Abstract: Parkinson’s disease is a neurodegenerative disorder, and ferroptosis plays a significant role in the pathological mechanism underlying Parkinson’s disease. Rapamycin, an autophagy inducer, has been shown to have neuroprotective effects in Parkinson’s disease. However, the link between rapamycin and ferroptosis in Parkinson’s disease is not entirely clear. In this study, rapamycin was administered to a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced Parkinson’s disease mouse model and a 1-methyl-4-phenylpyridinium-induced Parkinson’s disease PC12 cell model. The results showed that rapamycin improved the behavioral symptoms of Parkinson’s disease model mice, reduced the loss of dopamine neurons in the substantia nigra pars compacta, and reduced the expression of ferroptosis-related indicators (glutathione peroxidase 4, recombinant solute carrier family 7, member 11, glutathione, malondialdehyde, and reactive oxygen species). In the Parkinson’s disease cell model, rapamycin improved cell viability and reduced ferroptosis. The neuroprotective effect of rapamycin was attenuated by a ferroptosis inducer (methyl (1S,3R)-2-(2-chloroacetyl)-1-(4-methoxycarbonylphenyl)-1,3,4,9-tetrahyyridoindole-3-carboxylate) and an autophagy inhibitor (3-methyladenine). Inhibiting ferroptosis by activating autophagy may be an important mechanism by which rapamycin exerts its neuroprotective effects. Therefore, the regulation of ferroptosis and autophagy may provide a therapeutic target for drug treatments in Parkinson’s disease.

Key words: autophagy, behavior, ferroptosis, MPTP, Parkinson’s disease, PC12 cell, rapamycin, tyrosine hydroxylase