B细胞系无法支持高效的 rhesus 肠道卡利西病毒和人类诺罗病毒复制
1Department of Veterinary Pathobiology, College of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, Texas, USA.
Journal of virology
|April 22, 2025
概括
人类诺罗病毒 (HuNoV) 和 rhesus 肠道卡利西病毒 (ReCV) B 细胞培养系统显示出有限且可能的流产性感染. 这些发现表明B细胞培养不适合研究HuNoV和ReCV复制.
科学领域:
- 病毒学 病毒学
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 人类诺罗病毒 (HuNoV) 和 rhesus肠道卡利西病毒 (ReCV) 是人类和动物的重要病原体.
- 以前的研究表明,免疫细胞对HuNoV和ReCV的热带性,导致B细胞培养系统的发展.
- 复制性问题引发了人们对B细胞培养物适用于HuNoV研究的担忧.
研究的目的:
- 评估非人类灵长类 (NHP) B细胞系和人类BJAB细胞系对ReCV-FT285感染的敏感性.
- 调查考克萨基和腺病毒受体 (CAR) 和血基组抗原 (HBGA) 在B细胞中ReCV和HuNoV敏感性的作用.
- 评估B细胞培养物用于研究肠道病毒复制的有效性.
主要方法:
- 在NHP B细胞系和BJAB细胞中感染ReCV-FT285.5.
- 使用西方斑点对CAR和HBGA表达的分析.
- BJAB细胞与CAR和HBGA表达载体的共传染.
- 检测病毒RNA (dsRNA染色) 来确认最初的感染.
主要成果:
- NHP B细胞系缺乏CAR和HBGA表达,并且抵抗了ReCV感染.
- BJAB细胞显示不一致,低水平的ReCV复制与可检测的CAR和HBGA表达.
- CAR主要被BJAB细胞内化,表面表达没有增加ReCV标位.
- 在BJAB细胞中最初的ReCV和HuNoV感染大多是流产的,后代病毒释放最小.
结论:
- BJAB细胞在低水平上表达必要的分子,仅支持初始的,失败的肠道卡利西病毒感染.
- 由于B细胞培养系统的复制能力差,复制能力有限,因此不适合HuNoV和ReCV研究.
- 对于诺罗病毒研究的有效和可复制的细胞培养系统进行进一步的研究是有必要的.
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