在中国分离的肠道病毒A71亚组C4菌株的生物特征
Tianli Ma1,2, Huan Li1, Yunfang Li3
1Chinese PLA Center for Disease Control and Prevention, 20 Dongda Street, Fengtai District, Beijing, 100071, China.
BMC infectious diseases
|December 5, 2025
概括
一种新的肠道病毒A71 (EV-A71) 菌株,GD10,在人体细胞中表现出强烈的传染性,并损害了血脑屏障. 这项研究增强了对EV-A71的理解.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 传染性疾病 传染性疾病
背景情况:
- 手足口病 (HFMD) 是一个常见的儿童疾病.
- 肠道病毒A71 (EV-A71) 亚组C4是中国HFMD和神经感染的普遍原因.
- 了解EV-A71菌株特征对于疾病控制和疫苗开发至关重要.
研究的目的:
- 来自中国的EV-A71亚组C4菌株 (GD10) 主导的基因和生物特征.
- 在体外研究GD10菌株的传染性,复制性,细胞毒性以及对血脑屏障 (BBB) 的影响.
- 提供有关EV-A71病原体的见解,并支持疫苗开发工作.
主要方法:
- 在EV-A71 C4 GD10菌株的全基因组测序.
- 遗传学分析以确定与其他菌株的遗传关系.
- 在RD和Vero细胞中的病毒感染性,复制性,细胞毒性 (LDH释放,ATP水平) 和BBB完整性的体外评估.
主要成果:
- GD10菌株属于EV-A71C4亚组,在遗传上与中国菌株相似.
- 虽然GD10在人类狂宫肌肉瘤 (RD) 细胞中表现出显著的细胞病变效应和复制,但在Vero细胞中却没有.
- 在体外,GD10感染导致细胞损伤增加,并损害了血脑屏障的完整性.
结论:
- GD10菌株对RD细胞具有很高的适应性,并且具有损害BBB功能的能力.
- 这些发现有助于更好地了解EV-A71与宿主细胞的相互作用及其可能引起神经复杂性的可能性.
- 这项研究支持正在进行的开发有效EV-A71疫苗的努力.
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