{"title":"补体C4加重星形胶质细胞介导的神经炎症并促进帕金森病α-突触核蛋白病理","authors":"Wenkai Zou, Liang Kou, Yiming Wang, Zongjie Jin, Nian Xiong, Tao Wang, Yun Xia","doi":"10.1038/s41531-025-01005-z","DOIUrl":null,"url":null,"abstract":"<p>Complement C4, implicated in neuroinflammation and synaptic dysfunction, plays a poorly defined role in Parkinson’s disease (PD). Here, we demonstrate elevated C4 levels in PD patient plasma and the substantia nigra of α-synuclein preformed fibril (α-syn PFF)-injected mice, correlating with disease severity. α-syn PFF treatment induces complement C4 expression, particularly in neurons, with astrocytes further enhancing this response. Complement C4 was found to amplify astrocytic inflammatory responses, leading to increased neuronal apoptosis and synaptic damage. Additionally, conditioned media from astrocytes treated with α-syn PFF and complement C4 accelerated α-syn aggregation and synaptic loss in cultured neurons. In vivo, complement C4 exacerbated motor dysfunction, dopaminergic neuronal loss, and α-syn pathology in α-syn PFF-injected mice. These findings reveal that complement C4 significantly contributes to the neuroinflammatory environment and α-syn pathology in PD, highlighting its potential as a therapeutic target for mitigating neurodegeneration in this disorder.</p>","PeriodicalId":19706,"journal":{"name":"NPJ Parkinson's Disease","volume":"1118 1","pages":""},"PeriodicalIF":6.7000,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Complement C4 exacerbates astrocyte-mediated neuroinflammation and promotes α-synuclein pathology in Parkinson’s disease\",\"authors\":\"Wenkai Zou, Liang Kou, Yiming Wang, Zongjie Jin, Nian Xiong, Tao Wang, Yun Xia\",\"doi\":\"10.1038/s41531-025-01005-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Complement C4, implicated in neuroinflammation and synaptic dysfunction, plays a poorly defined role in Parkinson’s disease (PD). Here, we demonstrate elevated C4 levels in PD patient plasma and the substantia nigra of α-synuclein preformed fibril (α-syn PFF)-injected mice, correlating with disease severity. α-syn PFF treatment induces complement C4 expression, particularly in neurons, with astrocytes further enhancing this response. Complement C4 was found to amplify astrocytic inflammatory responses, leading to increased neuronal apoptosis and synaptic damage. Additionally, conditioned media from astrocytes treated with α-syn PFF and complement C4 accelerated α-syn aggregation and synaptic loss in cultured neurons. In vivo, complement C4 exacerbated motor dysfunction, dopaminergic neuronal loss, and α-syn pathology in α-syn PFF-injected mice. These findings reveal that complement C4 significantly contributes to the neuroinflammatory environment and α-syn pathology in PD, highlighting its potential as a therapeutic target for mitigating neurodegeneration in this disorder.</p>\",\"PeriodicalId\":19706,\"journal\":{\"name\":\"NPJ Parkinson's Disease\",\"volume\":\"1118 1\",\"pages\":\"\"},\"PeriodicalIF\":6.7000,\"publicationDate\":\"2025-05-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"NPJ Parkinson's Disease\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1038/s41531-025-01005-z\",\"RegionNum\":1,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"NEUROSCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"NPJ Parkinson's Disease","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1038/s41531-025-01005-z","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NEUROSCIENCES","Score":null,"Total":0}
Complement C4 exacerbates astrocyte-mediated neuroinflammation and promotes α-synuclein pathology in Parkinson’s disease
Complement C4, implicated in neuroinflammation and synaptic dysfunction, plays a poorly defined role in Parkinson’s disease (PD). Here, we demonstrate elevated C4 levels in PD patient plasma and the substantia nigra of α-synuclein preformed fibril (α-syn PFF)-injected mice, correlating with disease severity. α-syn PFF treatment induces complement C4 expression, particularly in neurons, with astrocytes further enhancing this response. Complement C4 was found to amplify astrocytic inflammatory responses, leading to increased neuronal apoptosis and synaptic damage. Additionally, conditioned media from astrocytes treated with α-syn PFF and complement C4 accelerated α-syn aggregation and synaptic loss in cultured neurons. In vivo, complement C4 exacerbated motor dysfunction, dopaminergic neuronal loss, and α-syn pathology in α-syn PFF-injected mice. These findings reveal that complement C4 significantly contributes to the neuroinflammatory environment and α-syn pathology in PD, highlighting its potential as a therapeutic target for mitigating neurodegeneration in this disorder.
期刊介绍:
npj Parkinson's Disease is a comprehensive open access journal that covers a wide range of research areas related to Parkinson's disease. It publishes original studies in basic science, translational research, and clinical investigations. The journal is dedicated to advancing our understanding of Parkinson's disease by exploring various aspects such as anatomy, etiology, genetics, cellular and molecular physiology, neurophysiology, epidemiology, and therapeutic development. By providing free and immediate access to the scientific and Parkinson's disease community, npj Parkinson's Disease promotes collaboration and knowledge sharing among researchers and healthcare professionals.