期刊
FRONTIERS IN CELLULAR NEUROSCIENCE
卷 15, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fncel.2021.710820
关键词
Pannexin 1; astrocytes; neuroinflammation; Parkinson's disease; MPP+
资金
- National Natural Science Foundation of China [31900718, 81771339]
- Basic Research Program of the Education Department of Jiangsu Province [19KJB180024]
- Postdoctoral Science Foundation of China [2019M651925]
Reactive astrocytes play a crucial role in the inflammatory response of brain injury, including Parkinson's disease. Pannexin 1 has been identified as a membrane channel involved in substance release in neurodegenerative diseases, and in this study, upregulation of Panx 1 was associated with inflammatory cytokine expression. Moreover, inhibiting Panx 1 could suppress pro-inflammatory cytokine expression induced by lipopolysaccharide, suggesting its potential as a key regulator in reactive astrocytes.
Reactive astrogliosis is a key hallmark of inflammatory responses in the pathogenesis of brain injury, including Parkinson's disease (PD), but its role and regulatory mechanisms are not fully understood. Pannexin 1 (Panx 1) is a membrane channel that mediates substance release in many neurodegenerative diseases. However, the role of astrocyte Panx 1 in the regulation of PD-like neuroinflammation remains elusive. Here, we characterized the expression of Panx 1 in isolated primary astrocytes and a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced PD model. The functions of Panx 1 in inflammatory cytokines expression and the viability of neuronal SH-SY5Y cells were examined in cultured cells treated with lipopolysaccharide (LPS) and 1-methyl-4-phenylpyridinium (MPP+). We found that Panx 1 expression was significantly increased under both LPS- and MPP+-treated conditions. Panx 1 downregulation suppressed LPS-induced pro-inflammatory cytokine expression but did not significantly affect MPP+-induced astrocyte apoptosis or inflammatory cytokine expression through treatment with the Panx 1 inhibitor carbenoxolone (CBX) and Panx 1 siRNA. Moreover, silencing Panx 1 in reactive astrocytes had a potentially protective effect on the viability of neuronal SH-SY5Y cells. Therefore, we propose that Panx 1 may serve as a key regulator in reactive astrocytes to intervene in the inflammatory response and maintain neuronal viability in the context of PD-like conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据