SARS-CoV-2 membrane protein induces neurodegeneration via affecting Golgi-mitochondria interaction

文献类型： 外文期刊

第一作者： Wang, Fang

作者： Wang, Fang;Han, Hailong;Rong, Yikang;Wang, Danling;Zhang, Zhuohua;Wang, Fang;Han, Hailong;Wang, Caifang;Peng, Yanni;Chen, Ye;Zhang, Zhuohua;Wang, Fang;Han, Hailong;Wang, Caifang;Peng, Yanni;Chen, Ye;Zhang, Zhuohua;Wang, Fang;Han, Hailong;Wang, Caifang;Peng, Yanni;Chen, Ye;Deng, Zhouyang;Li, Fang;Zhang, Zhuohua;Wang, Jingfei;Chen, Hualan;He, Yaohui;Liu, Wen

作者机构：

关键词： COVID-19; Alzheimer's disease; Mitochondria; PI4KIII beta; Brain

期刊名称：TRANSLATIONAL NEURODEGENERATION （ 影响因子：15.2； 五年影响因子：15.0 ）

ISSN： 2047-9158

年卷期： 2024 年 13 卷 1 期

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收录情况： SCI

摘要： BackgroundNeurological complications are a significant concern of Coronavirus Disease 2019 (COVID-19). However, the pathogenic mechanism of neurological symptoms associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is poorly understood.MethodsWe used Drosophila as a model to systematically analyze SARS-CoV-2 genes encoding structural and accessory proteins and identified the membrane protein (M) that disrupted mitochondrial functions in vivo. The M protein was stereotaxically injected to further assess its effects in the brains of wild-type (WT) and 5 x FAD mice. Omics technologies, including RNA sequencing and interactome analysis, were performed to explore the mechanisms of the effects of M protein both in vitro and in vivo.ResultsSystematic analysis of SARS-CoV-2 structural and accessory proteins in Drosophila identified that the M protein induces mitochondrial fragmentation and dysfunction, leading to reduced ATP production, ROS overproduction, and eventually cell death in the indirect flight muscles. In WT mice, M caused hippocampal atrophy, neural apoptosis, glial activation, and mitochondrial damage. These changes were further aggravated in 5 x FAD mice. M was localized to the Golgi apparatus and genetically interacted with four wheel drive (FWD, a Drosophila homolog of mammalian PI4KIII beta) to regulate Golgi functions in flies. Fwd RNAi, but not PI4KIII alpha RNAi, reversed the M-induced Golgi abnormality, mitochondrial fragmentation, and ATP reduction. Inhibition of PI4KIII beta activity suppressed the M-induced neuronal cell death. Therefore, M induced mitochondrial fragmentation and apoptosis likely through disruption of Golgi-derived PI(4)P-containing vesicles.ConclusionsM disturbs the distribution and function of Golgi, leading to mitochondrial abnormality and eventually neurodegeneration via a PI4KIII beta-mediated mechanism. This study reveals a potential mechanism for COVID-19 neurological symptoms and opens a new avenue for development of therapeutic strategies targeting SARS-CoV-2 M or mitochondria.

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