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Viral entry defines the hepatitis E virus species barrier in murine hepatocytes

GSE319021 Mus musculus; Homo sapiens Expression profiling by high throughput sequencing 60 samples Submitted 2026/08/07 Platform GPL34290Platform GPL32159Platform GPL30882
Summary
The Paslahepevirus balayani hepatitis E virus (HEV) and the distantly related Rocahepevirus ratti rat HEV pose a risk for zoonotic transmission to humans. However, the molecular determinants for HEV transmission between species remain unknown. Despite the broad host range including its ability to infect certain rodent species, infections of animals of the genus Mus within the subfamily Murinae are rarely documented. To dissect the molecular mechanisms underlying species barriers to HEV infection, this study aimed to investigate the virus replication cycle and immune-related determinants responsible for restricted HEV infection in murine hepatocytes. Murine hepatic cell lines supported moderate levels of zoonotic HEV replication and infectious virion production upon transfection of in vitro transcribed viral RNA. Notably, viral replication was not restricted by innate immune responses or presence of dominant restriction factors but was limited by absence of host-specific dependency factors. While successful attachment to murine hepatic cells was detected, mechanisms of viral entry differed between human and murine hepatocytes, correlating with murine cell lines and primary murine hepatocytes being refractory to HEV infection. In summary, the murine barrier to HEV infection is defined at the viral entry stage, specifically by a block post attachment and before viral replication is initiated. These findings shed new light on the fundamental role of viral entry mechanisms in defining HEV species tropism.
Published in
Viral entry defines the hepatitis E virus species barrier in murine hepatocytes
Frericks N, Pinto Veiga O, Sirkinti L et al. · Emerging microbes & infections 2026 · PMID 42506980 · doi:10.1080/22221751.2026.2706321
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Direct links to NCBI, no account and no request form: the whole study as GSE319021_RAW.tar, processed values as the series matrix, the supplementary file directory, and per-sample supplementary files for any of the 60 samples. Raw sequencing reads are also available from ENA.

Also filed as BioProject PRJNA1421980 and SRA study SRP676087. Searching any of these in the dataset finder brings you back here.

Study design
40 conditions, each sampled once — no replicated groups

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