相关实验视频
Updated: Jul 23, 2025

Quantifying Subcellular Ubiquitin-proteasome Activity in the Rodent Brain
Published on: May 21, 2019
尤比基因特异蛋白酶8通过SIRT1 deubiquitination调节患有败血症相关脑病变的小鼠的认知功能障碍
Weina Gao1,2, Lijuan Wang3, Zuoxiao Li1
1Department of Neurology, The Affiliated Hospital of Southwest Medical University, Taiping Street, Jiangyang District, Luzhou City, Sichuan Province, 646000, China.
乌比基特异性蛋白酶8 (USP8) 通过对SIRT1进行二氧化,减少炎症和氧化应激,改善败血症相关脑病变 (SAE),并增强小鼠的认知功能.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 败血症相关脑病变 (SAE) 是败血症的严重并发症,通常导致认知和运动缺陷.
- 乌比基特异性蛋白酶8 (USP8) 已经显示出改善这些神经障碍的潜力.
研究的目的:
- 阐明USP8影响SAE的潜在机制.
- 确定USP8作为SAE的潜在治疗点.
主要方法:
- 败血症相关脑病变 (SAE) 的小鼠模型是使用白内障绑定和穿孔 (CLP) 建立的.
- 在CLP之前,USP8的过度表达是通过lentivirus注射引起的.
- 评估了认知功能,运动活动和大脑病理;分析了炎症的分子标志物,氧化应激和USP8-SIRT1相互作用.
主要成果:
- 在CLP小鼠中,体重减轻,认知障碍,运动缺陷,神经炎症和氧化应激.
- USP8治疗逆转了这些缺陷,减少了炎症性细胞因子 (TNF-α,IL-1β,IL-6),增加了IL-10,并减轻了氧化损伤.
- USP8直接对SIRT1进行了脱,促进了其表达和功能,SIRT1的敲击部分逆转了USP8的保护作用.
结论:
- 在SAE小鼠中,USP8通过直接使SIRT1.1脱化来增强SAE小鼠的认知功能.
- 在SAE的背景下,USP8通过抑制炎症反应和氧化应激来产生神经保护作用.
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