单个流感A病毒在病毒-细胞接口上诱导纳米级细胞重编程
Lukas Broich1, Hannah Wullenkord2, Maria Kaukab Osman3,4,5
1Nanoscale Infection Biology Group, Helmholtz Centre for Infection Research, Braunschweig, Germany.
Nature communications
|April 25, 2025
概括
这项研究揭示了A型流感病毒如何在纳米尺度上与宿主细胞相互作用. 我们可视化了早期的病毒细胞接触,揭示了受体动力学和感染期间意想不到的蛋白质招募.
科学领域:
- 细胞生物学 细胞生物学
- 病毒学 病毒学
- 生物物理学的生物物理.
背景情况:
- 细胞信号在感染期间在病毒-细胞接口上启动.
- 早期的病毒事件,如受体招募,是短暂的,由于技术限制,很难研究.
- 了解初始病毒-细胞相互作用的纳米级动力学至关重要.
研究的目的:
- 开发一种扩展观察病毒-细胞相互作用的方法.
- 在早期感染期间调查病毒受体和细胞机械的动态.
- 为了探索actin细胞骨架在对病毒结合的反应中的纳米组织.
主要方法:
- 开发了一种协议,在玻璃表面固定标记的流感A病毒.
- 使用单分子超分辨率显微镜对病毒细胞相互作用进行实时成像.
- 分析了病毒-受体动力学,克拉特林介导的内细胞分裂和actin细胞骨架组织.
主要成果:
- 不动化的病毒允许对病毒与血关联的延长观察.
- 观察到病毒受体在结合部位的流动性降低和局部积累/转换.
- 在甲型流感病毒的克拉斯林介导内细胞分裂过程中,证明了对适应蛋白2 (AP-2) 的招募.
- 揭示了actin细胞骨架对感染病毒的动态局部反应.
结论:
- 开发的方法可以详细研究早期的病毒细胞相互作用.
- 流感A病毒感染涉及特定的受体动态和招募意想不到的细胞蛋白质,如AP-2.
- 在病毒结合时,actin细胞骨经历了快速的纳米级重组,影响了感染动态.
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