Understanding How Hepatitis E Virus Enters Cells and Spreads
Author Information
Author(s): Nagashima Shigeo, Primadharsini Putu Prathiwi, Takahashi Masaharu, Nishiyama Takashi, Murata Kazumoto, Okamoto Hiroaki
Primary Institution: Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine
Hypothesis
The study aims to elucidate the roles of Rab13, protein kinase A, and zonula occludens-1 in the entry mechanisms of both quasi-enveloped and non-enveloped forms of hepatitis E virus.
Conclusion
The study found that both forms of hepatitis E virus rely on Rab13 and protein kinase A for entry, and zonula occludens-1 is crucial for the entry of quasi-enveloped hepatitis E virus and its cell-to-cell spread.
Supporting Evidence
- The entry of both viral forms is dependent on Rab13 and PKA.
- Targeted knockdown of zonula occludens-1 significantly impaired the entry of both eHEV and neHEV.
- In ZO-1 knockout cells, HEV RNA levels did not increase even up to 16 days post-inoculation.
- Absence of ZO-1 did not affect the adsorption efficiency of eHEV or neHEV.
Takeaway
Hepatitis E virus needs certain proteins to get into cells and spread to other cells, and one of these proteins, called ZO-1, is especially important for the virus with a membrane.
Methodology
The study utilized small interfering RNA (siRNA) and chemical inhibitors to investigate the roles of Rab13, protein kinase A, and tight junction proteins in hepatitis E virus infection.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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