高血糖促进了EV71的复制:洞察了miR-206介导的G3BP2促进EV71IRES活动的调节
Rai-Hua Lai1,2, Yen-Hung Chow3,4, Yi-Wen Lin3
1National Center for Geriatrics and Welfare Research, National Health Research Institutes, Miaoli, Taiwan.
Theranostics
|May 22, 2024
概括
过高血糖症通过增加病毒载量和脑炎,加剧肠道病毒71 (EV71) 的脑部感染. 控制血糖和准miR-206通路为严重的EV71提供了新的治疗策略.
科学领域:
- 病毒学 病毒学
- 神经科学是一个神经科学.
- 代谢障碍 代谢障碍 代谢障碍
背景情况:
- 神经型病毒操纵宿主新陈代谢以产生神经毒性.
- 高血糖在严重感染中很常见,但其在神经病毒发作中的作用尚不清楚.
- 肠道病毒71 (EV71) 依赖于内部核糖体进入部位 (IRES) 介导的翻译来进行复制.
研究的目的:
- 为了研究高血糖对EV71神经毒性的影响.
- 阐明高血糖如何影响EV71感染的机制.
- 为了确定严重的EV71感染的潜在治疗点.
主要方法:
- 在EV71感染模型中使用hSCARB2-转基因小鼠.
- 服用胰岛素以减少高血糖和观察到对神经病变发生的影响.
- 诱导高血糖症研究其恶化作用.
- 分析了miR-206的表达及其在病毒复制中的作用.
- 使用antagomiR-206来评估其治疗潜力.
主要成果:
- 用胰岛素降低高血糖症降低了脑干脑炎和病毒载量.
- 诱导高血糖症加剧了EV71的神经病变发生.
- miR-206的表达在病毒感染和高血糖症时增加,在胰岛素时降低.
- 抗体R-206治疗减轻了EV71引起的脑炎和减少病毒载量.
- 发现miR-206抑制了压力颗粒蛋白G3BP2,从而促进了IRES驱动的病毒复制.
结论:
- 过高血糖在增强EV71神经毒性方面起着至关重要的作用.
- miR-206-G3BP2通路是EV71感染因高血糖引起的恶化的一个关键媒介.
- 管理高血糖症和准miR-206压力颗粒途径是严重的EV71感染的有希望的治疗策略.
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