Dataset Information

Long-Term Hepatitis B Virus Infection Induces Cytopathic Effects in Primary Human Hepatocytes and Can be Partially Reversed by Antiviral Therapy

ABSTRACT: Global temporal quantitative proteomic and transcriptomic analysis using long-term hepatitis B virus (HBV)-infected primary human hepatocytes uncovered extensive remodeling of host proteome and transcriptome, and revealed cytopathic effects of long-term viral replication. Metabolic-, complement-, cytoskeleton-, mitochondrial- and oxidation-related pathways were modulated at transcriptional or post-transcriptional levels, which could be partially rescued by early rather than late nucleot(s)ide analogs (NAs) therapy. Overexpression screening identified a series of pro- or anti- HBV host factors. These data have deepened the understanding of the mechanisms of viral pathogenesis and HBV-host interactions in hepatocytes, with implications for therapeutic intervention.

ORGANISM(S): Homo Sapiens

SUBMITTER: Zhenghong Yuan

PROVIDER: PXD028190 | iProX | Tue Aug 31 00:00:00 BST 2021

REPOSITORIES: iProX

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Long-Term Hepatitis B Virus Infection Induces Cytopathic Effects in Primary Human Hepatocytes, and Can Be Partially Reversed by Antiviral Therapy.

Zai Wenjing W Hu Kongying K Ye Jianyu J Ding Jiahui J Huang Chao C Li Yaming Y Fang Zhong Z Wu Min M Wang Cong C Chen Jieliang J Yuan Zhenghong Z

Microbiology spectrum 20220216 1

Chronic infection of hepatitis B virus (HBV) remains a major health burden worldwide. While the immune response has been recognized to play crucial roles in HBV pathogenesis, the direct cytopathic effects of HBV infection and replication on host hepatocytes and the HBV-host interactions are only partially defined due to limited culture systems. Here, based on our recently developed 5 chemical-cultured primary human hepatocytes (5C-PHHs) model that supports long-term HBV infection, we performed m ...[more]

PMID: 35171034

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Project description:The same entry pathway is shared by HBV and HDV. Both viruses attach to hepatocytes via heparansulfate proteoglycan and utilize sodium taurocholate co-transporting polypeptide (NTCP) for a specifc entry. This specific entry step is inhibited by Myrcludex B, a 47-aa lipopeptide myristoylated at the N-terminus. Here we compared the cellular response in the gene expression level triggerred by both viruses. The microarray data shows that HBV infection leads to a silent response but HDV infection triggers high level of innate response such as inteferon-stimulated genes (ISG) expression. Moreover, the response depends on the hepatic cell lines used for infection. Compared to HepG2 cells, HuH7 can not induce ISG even infected by HDV. Abstract of manuscript: Background & aims: Hepatitis B virus (HBV) and D virus (HDV) co-infections cause the most severe form of viral hepatitis. HDV induces an innate immune response, but it is unknown how the host cell senses HDV and if this defense affects HDV replication. We aim to characterize interferon (IFN) activation by HDV, identify the responsible sensor and evaluate the effect of IFN on HDV replication. Methods: HDV and HBV susceptible hepatoma cell lines and primary human hepatocytes (PHH) were used for infection studies. Viral markers and cellular gene expression were analyzed at different time points after infection. Pattern recognition receptors (PRRs) required for HDV-mediated IFN activation and the impact on HDV replication were studied using stable knock-down or overexpression of the PRRs. Results: Microarray analysis revealed that HDV but not HBV infection activated a broad range of interferon stimulated genes (ISGs) in HepG2NTCP cells. HDV strongly activated IFN-β and IFN-λ in cell lines and PHH. HDV induced IFN levels remained unaltered upon RIG-I or TLR3 knock-down, but were almost completely abolished upon MDA5 depletion. Conversely, overexpression of MDA5 but not RIG-I and TLR3 in Huh7.5NTCP cells partially restored ISG induction. During long-term infection, IFN levels gradually diminished in both HepG2NTCP and HepaRGNTCP cell lines. MDA5 depletion had little effect on HDV replication despite dampening HDV-induced IFN response. Moreover, treatment with type I or type III IFNs did not abolish HDV replication. Conclusions: Active replication of HDV induces an IFN-β/λ response, which is predominantly mediated by MDA5. This IFN response and exogenous IFN treatment have only a moderate effect on HDV replication in vitro indicating the adaption of HDV replication to an IFN activated state.

Dataset Information

Long-Term Hepatitis B Virus Infection Induces Cytopathic Effects in Primary Human Hepatocytes and Can be Partially Reversed by Antiviral Therapy

Publications

Long-Term Hepatitis B Virus Infection Induces Cytopathic Effects in Primary Human Hepatocytes, and Can Be Partially Reversed by Antiviral Therapy.

Similar Datasets

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