关于在小印度蒙古斯 (Urva auropunctata) 中检测和分子表征alphacoronaviruses的第一份报告
Jessica L Kulberg1, Anne A M J Becker1, Yashpal S Malik2
1Department of Biomedical Sciences, Ross University School of Veterinary Medicine, P.O. Box 334, Basseterre, Saint Kitts And Nevis.
Virology journal
|December 19, 2025
概括
阿尔法冠状病毒 (αCoVs) 在加勒比蒙古斯中普遍存在,显示出显著的遗传多样性和重组. 这些发现扩大了已知的aCoVs宿主范围,并突出了潜在的跨物种传播风险.
科学领域:
- 病毒学 病毒学
- 基因组学就是基因组学.
- 进化生物学 进化生物学
背景情况:
- 瑞士阿尔法冠状病毒/阿尔法冠状病毒-1 (αCoV-1) 是犬类和类动物中显著的病毒病原体,以复杂的进化和物种间传播而闻名,包括动物病.
- 作为食尸动物的,是病毒病原体的潜在携带者,但它们的冠状病毒 (CoV) 遗传多样性仍然没有特征.
研究的目的:
- 调查蒙古群体中冠状病毒 (CoV) 的存在和遗传多样性.
- 分析在鹿中发现的CoVs的进化模式和跨物种传播潜力.
主要方法:
- 来自圣基茨岛的53只小印度 (Urva auropunctata) 的便样本使用RT半嵌套PCR试验对Covs进行了查.
- 部分依赖RNA的RNA聚合酶 (RdRp),膜蛋白 (M) 和几乎全长的尖峰 (S) 蛋白编码序列 (CDS) 的检测到的CoVs被确定和分析.
主要成果:
- 在蒙古群体中发现了高检测率 (30.18%) 的αCoVs,这表明广泛传播.
- 在蒙古斯CoV中观察到显著的遗传多样性,与其他aCoV相比,S基因中至少有两个重组事件的证据,包括受体结合域 (RBD).
- 遗传学分析将蒙古斯冠状病毒置于犬类Cov-2血统中,与CCoV-2b密切相关,同时保留宿主受体结合的关键特征.
结论:
- 这项研究是首次报告大猩猩中冠状病毒的高流行率和遗传多样性,扩大了已知的宿主范围和对αCoVs的进化理解.
- 这些发现强调了进一步研究蒙古斯CoV流行率,不同种群的遗传多样性以及由于潜在的跨物种传播风险,它们的RBD-宿主受体相互作用的重要性.
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