Human pluripotent stem cell-derived hepatocyte-like cells for hepatitis D virus studies
Chi, H.; Qu, B.; Prawira, A.; Maurer, L.; Hu, J.; Fu, R. M.; Lempp, F. A.; Zhang, Z.; Grimm, D.; Wu, X.; Urban, S.; Dao Thi, V. L.
Show abstract
Current culture systems available for studying hepatitis D virus (HDV) are suboptimal. In this study, we demonstrate that hepatocyte-like cells (HLCs) derived from human pluripotent stem cells (hPSCs) are fully permissive to HDV infection across various tested genotypes. When co- infected with the helper hepatitis B virus (HBV) or transduced to express the HBV envelope protein HBsAg, HLCs effectively secrete infectious progeny virions. We also show that HLCs expressing HBsAg support extracellular spread of HDV, thus providing a valuable platform for testing available anti-HDV regimens. By challenging the cells along the differentiation with HDV infection, we have identified CD63 as a potential HDV/HBV co-entry factor, which was rate-limiting HDV infection in immature hepatocytes. Given their renewable source and the potential to derive hPSCs from individual patients, we propose HLCs as a promising model for investigating HDV biology. Our findings offer new insights into HDV infection and expand the repertoire of research tools available for the development of therapeutic interventions. TeaserA human stem cell-derived hepatocyte culture model for hepatitis D virus studies
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