Liu Jingjing, Wang Shanshan, Fan Lei, Zhou Xin, Zhang Sen, Wang Qinglu, Dong Panpan, Yu Bo
Graduate School of Education, Shandong Sport University, Jinan, China.
Department of Neurology, Zibo 148 Hospital, Zibo, Shandong, China.
Front Immunol. 2025 Jul 9;16:1615001. doi: 10.3389/fimmu.2025.1615001. eCollection 2025.
Palmitoylation is a reversible lipid modification regulated by palmitoyl transferases and acyl-protein thioesterases, in which palmitic acid is attached to protein cysteine residues. This modification plays a pivotal role in modulating membrane localization and protein stability, and its dysregulation is closely associated with various neurodegenerative diseases, including Parkinson's disease (PD). In PD, synaptotagmin-11, encoded by the PD risk gene , has been shown to reduce physiological α-synuclein (α-syn) tetramer formation while promoting the aggregation-prone monomeric form in a palmitoylation-dependent manner. In the context of PD, inflammation generally precedes the abnormal aggregation of α-syn and the degeneration of dopaminergic neurons (DA). Microglial activation, regarded as an inflammatory state, is facilitated by the palmitoylation-dependent localization of NLRP3 to the trans-Golgi network, which promotes the activation and expression of the NLRP3 inflammasome, leading to DA neuron loss. Additionally, the DJ-1 protein, encoded by the risk gene , and the dopamine transporter both undergo palmitoylation and may contribute to disease progression. This review summarizes the emerging link between protein palmitoylation and PD pathogenesis. Understanding the dynamic regulatory mechanisms of palmitoylation and depalmitoylation may facilitate the development of targeted therapeutic strategies for PD.
棕榈酰化是一种由棕榈酰转移酶和酰基蛋白硫酯酶调节的可逆脂质修饰,其中棕榈酸附着于蛋白质的半胱氨酸残基上。这种修饰在调节膜定位和蛋白质稳定性方面起着关键作用,其失调与包括帕金森病(PD)在内的各种神经退行性疾病密切相关。在PD中,由PD风险基因编码的突触结合蛋白11已被证明以棕榈酰化依赖的方式减少生理性α-突触核蛋白(α-syn)四聚体的形成,同时促进易于聚集的单体形式。在PD的背景下,炎症通常先于α-syn的异常聚集和多巴胺能神经元(DA)的退化。小胶质细胞激活被认为是一种炎症状态,NLRP3棕榈酰化依赖的定位到反式高尔基体网络促进了这种激活,从而促进NLRP3炎性小体的激活和表达,导致DA神经元丢失。此外,由风险基因编码的DJ-1蛋白和多巴胺转运体都经历棕榈酰化,可能促进疾病进展。本综述总结了蛋白质棕榈酰化与PD发病机制之间新出现的联系。了解棕榈酰化和去棕榈酰化的动态调节机制可能有助于开发针对PD的靶向治疗策略。
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