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ACS Infect Dis. 2018 Dec 12. doi: 10.1021/acsinfecdis.8b00223. [Epub ahead of print]

In vivo model systems for hepatitis B virus research.

Abstract

Hepatitis B virus (HBV) globally affects more than 257 million people, resulting in progressively worsening liver disease, manifesting as fibrosis, cirrhosis and hepatocellular carcinoma. The exceptionally narrow species tropism of HBV restricts its natural hosts to humans and non-human primates, including chimpanzees, gorillas, gibbons, and orangutans. The unavailability of completely immunocompetent small-animal models has contributed to the lack of curative therapeutic interventions. Even though surrogates allow the study of closely related viruses, their host genetic background, immune responses, and molecular virology differ to that of HBV. Various different models, based either on pure murine or xenotransplantation systems have been introduced over the past years, often making the choice of the optimal model for any given question challenging. Here, we offer a concise review into in vivo model systems employed to study HBV infection and steps in the HBV life cycle or pathogenesis.

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