尼帕和亨德拉病毒在受体参与中使用可调节的锁
Mitchell S von Itzstein1, Moritz Winger1, Alpeshkumar K Malde1
1Institute for Biomedicine and Glycomics, Gold Coast Campus, Griffith University Queensland, Southport 4222, Australia.
ACS infectious diseases
|September 26, 2025
概括
致命的尼帕和亨德拉病毒在它们的附着糖蛋白中使用灵活的循环来感染细胞. 了解这个循环的理解
科学领域:
- 病毒学 病毒学
- 结构生物学 结构生物学
- 药物发现 药物发现 药物发现
背景情况:
- 尼帕病毒 (NiV) 和亨德拉病毒 (HeV) 是高度致病的动物性病毒.
- 黑尼帕病毒是一种类型的帕拉米克索病毒,依赖表面糖蛋白进入细胞.
- 针对这些葡萄糖蛋白是开发抗病毒疗法的关键策略.
研究的目的:
- 为了研究HeV和NiV附着糖蛋白的结构动态.
- 确定涉及病毒附着和细胞入侵的关键区域.
- 为开发新型抗黑尼帕病毒药物提供见解.
主要方法:
- 综合结构生物学技术的多学科方法.
- 对HeV和NiV的附着糖蛋白结构的研究.
- 网站导向的HeV附着糖蛋白的突变发生.
主要成果:
- 一个灵活的区域,称为循环240,被确定在henipaviral附着糖蛋白的结合部位附近.
- 循环240在一个开放的形状 (不结合) 和一个封闭的"锁"形状 (结合Ephrin B2) 之间进行过渡.
- 突变性研究揭示了R242与Ephrin B2在结合机制中的关键作用.
结论:
- 循环240的动态形状变化对于海尼帕病毒-埃弗林B2相互作用至关重要.
- 了解这些动态为设计抑制尼病毒进入的药物提供了新的途径.
- 这项研究推动了针对尼帕病毒和亨德拉病毒的有效治疗方法的开发.
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