rhesus macaques感染O'nyong-nyong病毒 UVIR-O804重述了人类临床疾病的关键方面
bioRxiv : the preprint server for biology
|December 15, 2025
概括
奥尼翁-尼翁病毒 (ONNV) 致使人衰弱的关节疼痛. 使用ONNV-0804菌株的新型 rhesus macaque模型有效地重复疾病和免疫反应,帮助疫苗开发.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- 奥尼翁-尼翁病毒 (ONNV) 是一种由蚊子传播的阿尔法病毒,在非洲引起疫情,症状包括发烧,皮疹和长期关节疼痛.
- 在动物模型中对ONNV感染和疾病的有限理解阻碍了疫苗和治疗开发.
- 之前对 rhesus macaques 的研究显示出有限的成功,可能是由于病毒因广泛传递而减弱.
研究的目的:
- 为研究O'nyong-nyong病毒 (ONNV) 感染和免疫反应建立一个相关的动物模型.
- 在 rhesus macaques 中评估当代ONNV临床分离物 (ONNV 0804) 的致病性和诱导免疫反应的能力.
- 为测试针对ONNV的潜在疫苗和治疗方法提供一个平台.
主要方法:
- 从最近的ONNV临床分离物 (ONNV 0804) 构建一个传染性克隆.
- 用ONNV0804对 rhesus (3只雄性,3只雌性) 进行皮下接种.
- 监测病毒病,免疫细胞激活 (单细胞,T细胞,B细胞),抗体的发展,以及临床表现 (皮疹,淋巴腺病,关节炎).
主要成果:
- 所有接种疫苗的 rhesus macaques 在接种疫苗后2天内都出现了可检测的病毒病.
- 经典和非经典单细胞 (CD169+) 的激活在3dpi处达到峰值,与峰值病毒血症相关.
- 在第7天观察到CD4+和CD8+效应体记忆T细胞和记忆B细胞的增殖,在第10天达到峰值,与中和抗体发育相吻合.
- 临床症状包括淋巴腺病变和早期关节炎的组织学证据被重新总结.
- 在受感染的身上观察到强大的先天性和适应性免疫反应.
结论:
- rhesus macaque感染ONNV临床分离物提供了一个有前途和相关的模型来研究alphavirus病原和免疫.
- 这个模型有效地模仿了在ONNV感染中观察到的关键临床表现和免疫反应.
- 已建立的模型对于评估未来针对ONNV的疫苗和治疗方法的疗效至关重要,有助于预防未来的流行病.
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