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

IF 6.7 1区 医学 Q1 NEUROSCIENCES
Wenkai Zou, Liang Kou, Yiming Wang, Zongjie Jin, Nian Xiong, Tao Wang, Yun Xia
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引用次数: 0

摘要

补体C4与神经炎症和突触功能障碍有关,在帕金森病(PD)中发挥的作用尚不明确。在这里,我们证明了PD患者血浆和α-突触核蛋白预形成纤维(α-syn PFF)注射小鼠的黑质中C4水平升高,与疾病严重程度相关。α-syn PFF处理诱导补体C4表达,特别是在神经元中,星形胶质细胞进一步增强了这种反应。补体C4被发现放大星形细胞炎症反应,导致神经元凋亡和突触损伤增加。此外,星形胶质细胞条件培养基中α-syn PFF和补体C4可加速培养神经元α-syn聚集和突触丢失。在体内,补体C4加重了α-syn pff注射小鼠的运动功能障碍、多巴胺能神经元丢失和α-syn病理。这些发现表明,补体C4显著促进PD的神经炎症环境和α-syn病理,突出了其作为缓解该疾病神经退行性变的治疗靶点的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Complement C4 exacerbates astrocyte-mediated neuroinflammation and promotes α-synuclein pathology in Parkinson’s disease

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.

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来源期刊
NPJ Parkinson's Disease
NPJ Parkinson's Disease Medicine-Neurology (clinical)
CiteScore
9.80
自引率
5.70%
发文量
156
审稿时长
11 weeks
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.
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