相关实验视频
Updated: Jun 10, 2025

Engineering Antiviral Agents via Surface Plasmon Resonance
Published on: June 14, 2022
沙尔贝科病毒RBD部分和特定残留物决定了多种ACE2适应性
Jun-Yu Si1, Yuan-Mei Chen1, Ye-Hui Sun1
1State Key Laboratory of Virology, College of Life Sciences, TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, Hubei, China.
具有特定受体结合基因 (RBM) 变化的sarbecoviruses显示出不同的ACE2使用. 长RBM允许广泛的ACE2适应,而删除则缩小或取消它,影响溢出风险.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 进化生物学 进化生物学
背景情况:
- 沙贝科病毒表现出多样化的受体结合基因 (RBM) 结构.
- 了解ACE2跨物种的适应性对于评估溢出风险至关重要.
研究的目的:
- 分析RBM插入/删除 (indels) 对萨尔贝科病毒ACE2使用的影响.
- 在各种哺乳动物物种中研究RBM的indel类型和ACE2热带性之间的关系.
主要方法:
- 分析了268个sarbecovirus RBM序列,分为四种类型.
- 检查20种代表性沙贝科病毒和衍生物的Spike糖蛋白介导的ACE2利用情况.
- 评估蝙蝠和其他哺乳动物种类中ACE2的使用情况.
主要成果:
- 具有长RBM (I型) 的sarbecoviruses表现出广泛的ACE2热带性.
- 具有单个RBM删除的病毒 (II型和III型) 呈现较窄的ACE2热带性.
- 具有双重RBM删除 (类型-IV) 的sarbecoviruses会失去ACE2的使用,受到类特异性残留的影响.
结论:
- 脊髓瘤的内部类型在很大程度上决定了sarbecovirus的ACE2适应性和宿主热带性.
- 循环长度,二硫化物键和残留决定因素极大地影响了多种ACE2的利用.
- 对RBM演变和ACE2绑定机制的洞察力为潜在溢出风险评估提供了信息.
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