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聚烯微塑料通过HRAS衍生的PERK-NF-κB通路诱导焦虑

Guanjun Li¹, Xueyan Liu¹, Xin Sun²

¹Department of Critical Medicine, Shenzhen Clinical Research Centre for Geriatrics, Shenzhen People's Hospital, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China.

Environment international

|March 7, 2024

概括

聚乙烯微塑料 (PS-MPs) 暴露会通过激活微质中HRAS衍生的PERK-NF-κB通路,导致神经炎症,在小鼠中引起类似焦虑的行为. 这项研究阐明了微塑料诱导的神经毒性背后的分子机制.

科学领域:

环境科学环境科学
神经科学是一个神经科学.
毒理学毒理学毒理学

背景情况:

环境危险物质对神经健康构成风险.
聚烯微塑料 (PS-MPs) 是普遍存在的,并表现出神经毒性.
将PS-MP与焦虑和神经炎症联系在一起的机制尚未完全理解.

研究的目的:

调查PS-MP和焦虑类行为之间的关联.
阐明涉及PS-MP神经毒性的分子机制和关键蛋白质.
探索微质激活和炎症在PS-MP诱导的焦虑中的作用.

主要方法:

描述PS-MPs和评估它们在小鼠大脑中的积累.
行为测试来评估类似焦虑的行为.
在BV2微质细胞中进行蛋白质组学分析和分子研究.
对微质激活,炎症反应和关键蛋白质通路 (NF-κB,HRAS,PERK) 的评估.

主要成果:

PS-MPs在大脑中积累,在小鼠中诱导焦虑类行为.
暴露于PS-MP会激活微质,并触发一种促炎反应.
PS-MPs激活了微质中的NF-κB通路,对TNFα和IL-1β进行上调.
HRAS被确定为一个关键因素;它的击倒抑制了PS-MP诱导的PERK-NF-κB激活和炎症.

结论:

通过微质中的HRAS衍生的PERK-NF-κB通路,PS-MPs在小鼠中诱导焦虑.
这种途径的激活导致神经炎症,并导致类似焦虑的行为.
研究结果提供了对微塑料神经毒性的洞察力,以及潜在的预防策略.

关键词:

分析化学是一种分析化学.环境毒理学环境毒理学聚乙烯微塑料的微塑料.

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