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Experimental hepatitis E virus genotype 1 infection in three types of wild rodents

作者: He Zhang, Yang Wu, Haojie Wang, Tianxu Liu, Xing Liu, Jianxing Chen, Yue Sun, Lihong Xue, Changwen Li, Huairan Liu, Hongyan Chen, Yinglin Qi, Tongqing An, Liang Wang, Zhimin Jin , Changqing Yu , Xinyue Yang, Yuebao Li, Hui Li , Changyou Xia, Xin Yin, Lin Wang
刊物名称: PLoS Pathog
DOI: 10.1371/journal.ppat.1014050
发布时间: 2026-03-29
摘要:

Hepatitis E virus genotype 1 (HEV-1) has long been considered human-specific, with no known natural animal hosts. Here, we demonstrate that three wild rodent species-Apodemus peninsulae, Clethrionomys rufocanus, and Lasiopodomys brandtii-are susceptible to HEV-1 infection. Among them, A. peninsulae infected with HEV-1 exhibited the highest susceptibility, characterized by robust fecal viral shedding, systemic viral replication, seroconversion, and mild liver pathology mimicking human acute HEV-1 infection. Intrahepatic transcriptomic analysis of infected animals revealed activation of inflammatory pathways, including upregulation of IL-1β and IL-18. Re-inoculation experiments confirmed infection-induced protective immunity, and ribavirin treatment effectively suppressed viral replication. HEV-1 infection can be established by oral gavage inoculation, close contact and vertical transmission. These results provide solid evidence that wild rodents can serve as potential hosts for HEV-1, highlighting the potential role of wild rodents in HEV-1 ecology and cross-species transmission.



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