中国神经再生研究(英文版) ›› 2026, Vol. 21 ›› Issue (9): 4435-4446.doi: 10.4103/NRR.NRR-D-25-00024

• 原著:退行性病与再生 • 上一篇    下一篇

双硫死亡促进鱼藤酮诱导的多巴胺神经元损伤

  

  • 出版日期:2026-09-15 发布日期:2026-05-22

Disulfidptosis contributes to rotenone-induced dopaminergic neuron damage

Wenqi Ye, Qifu Zhang, Wei Ge, Haoyin Liu, Yaohui Shan, Feng Ye, Xiaogang Wang, Yuanpeng Zhao, Guorong Dan, Mingliang Chen, Yan Sai*   

  1. Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
  • Online:2026-09-15 Published:2026-05-22
  • Contact: Yan Sai, MD, sai2000cn@163.com.
  • Supported by:
    This work was supported by the National Natural Science Foundation of China, No. 81973090 (to YS).

摘要:

近年来,一种新型细胞死亡方式——双硫死亡(disulfidptosis)被提出,其特点是细胞内二硫键代谢紊乱导致细胞骨架蛋白异常聚集和细胞死亡;然而,双硫死亡是否参与神经退行性疾病的病理过程仍缺乏直接证据。实验通过蛋白质组学分析发现,暴露于鱼藤酮的多巴胺神经元中与二硫化物凋亡相关的多个重要蛋白质表达显著差异。进一步分析显示,暴露于鱼藤酮的多巴胺神经元中异常二硫键的形成数量也明显增加。随后观察到,SLC7A11和SLC3A2蛋白的表达上调,这与暴露于鱼藤酮的多巴胺神经元中细胞外基质蛋白1的蛋白表达相关。因此,由于NADP+/NADPH比值的降低,引发了半胱氨酸的内流,并抑制了半胱氨酸向半胱氨酸的转化,导致暴露于鱼藤酮的PC12细胞中半胱氨酸的积累。随后,半胱氨酸的过度积累促进了细胞内异常二硫键的形成,最终导致暴露于鱼藤酮的多巴胺神经元发生双硫死亡。在此过程中,RAC1-WRC-ARP2/3通路明显被激活,进一步导致暴露于鱼藤酮的PC12细胞细胞骨架崩溃。这些结果表明,综上所述,鱼藤酮可通过激活细胞外基质蛋白1诱导SLC7A11的表达,导致半胱氨酸积累,进而引发以细胞骨架崩溃为特征的双硫死亡,这为神经退行性疾病的研究提供了新的视角。


https://orcid.org/0000-0002-5520-0443 (Yan Sai)

关键词: 细胞死亡l半胱氨酸l细胞骨架l双硫死亡l多巴胺神经元l神经退行性变l氧化应激l帕金森病l鱼藤酮lSLC7A11

Abstract:

Parkinson’s disease is a neurodegenerative disorder whose pathogenesis remains incompletely understood. Rotenone exposure is reportedly associated with Parkinson’s disease. In addition, disulfidptosis is a newly identified form of cell death. Interestingly, an analysis of the Gene Expression Omnibus Parkinson’s disease database indicated that approximately 30 genes that are significantly altered in patients with Parkinson’s disease are associated with disulfidptosis. In the present study, using proteomics, a number of important proteins related to disulfidptosis were identified as significantly altered in rotenone-exposed dopaminergic neurons. Further analysis revealed that the formation of abnormal disulfide bonds was also increased in rotenone-exposed dopaminergic neurons. The protein expression of solute carrier family 7 member 11 and amino acid transporter heavy chain SLC3A2 was upregulated in rotenone-exposed dopaminergic neurons, and was correlated with extracellular matrix protein 1 protein expression. These findings indicate that in rotenone-exposed PC12 cells, a cystine influx is triggered, and the conversion of cystine to cysteine is inhibited by a reduction in the oxidized nicotinamide adenine dinucleotide phosphate/reduced nicotinamide adenine dinucleotide phosphate ratio, which leads to cystine accumulation. This excessive accumulation of cystine then promotes the formation of abnormal disulfide bonds in cells, ultimately resulting in disulfidptosis of rotenone-exposed dopaminergic neurons. In this process, the Ras-related C3 botulinum toxin substrate 1/WAVE regulatory complex/actin-related protein 2/3 pathway was markedly activated, which led to the collapse of the cytoskeleton in rotenone-exposed PC12 cells. Together, our findings suggest that rotenone may induce solute carrier family 7 member 11 expression through extracellular matrix protein 1 activation to cause cystine accumulation, which results in disulfidptosis characterized by cytoskeleton collapse. The present results provide new perspectives for research into neurodegenerative diseases.

Key words: cell deathl cystinel cytoskeletonl disulfidptosisl dopaminergic neuronl neurodegenerationl oxidative stressl Parkinson’s diseasel rotenonel SLC7A11