简单疹病毒1菌株17+与UL37的R2突变具有残留的逆行运输
Marius Walter1, Anoria K Haick1, Paola A Massa1
1Vaccine and Infectious Disease Division, Fred Hutch Cancer Center, Seattle, WA, United States.
bioRxiv : the preprint server for biology
|July 16, 2025
概括
简单疹病毒1 (HSV-1) 体蛋白UL37中的R2突变并不能完全阻止逆向传输. 这种HSV-1 R2突变病毒建立了潜伏期并重新激活,这与之前的发现相矛盾.
科学领域:
- 病毒学 病毒学
- 神经科学是一个神经科学.
- 分子生物学分子生物学
背景情况:
- 简单疹病毒1 (HSV-1) 在逆行轴突运输后在神经元中建立终身潜伏状态.
- 再激活涉及到前进运输,导致复发的口腔或生殖器.
- 影响HSV-1传播的病毒和宿主因素正在积极研究.
研究的目的:
- 调查HSV-117+菌株UL37 tegument蛋白中的R2突变在防止逆向传播方面的有效性.
- 为了确定R2突变是否足以阻止潜伏建立和活体中重新激活.
- 为了协调关于R2突变在HSV-1神经生物学中的作用的相互矛盾的数据.
主要方法:
- 在HSV-1株17+UL37体蛋白的R2区域引入五种氨基酸替代,产生R2^17病毒.
- 评估神经元培养中的逆行运输.
- 感染小鼠模型 (眼部和阴道) 以评估R2^17病毒的潜伏建立和重新激活潜力.
主要成果:
- R2^17病毒呈现残留逆向传播,与之前报告的HSV-1菌株F不同.
- 在老鼠眼睛和阴道感染模型中,R2 ^ 17成功确定了延迟.
- 在这些模型中观察到R2^17病毒的重新激活,表明运输的不完全封锁.
结论:
- 在HSV-1 UL37中的R2突变不足以完全抑制逆行轴突传输.
- 这一发现挑战了之前的报道,并表明其他病毒或宿主因素对于预防HSV-1神经入侵至关重要.
- 需要进一步的研究,以充分理解控制HSV-1延迟和重新激活的机制.
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