Recapitulation of treatment response patterns in a novel humanized mouse model for chronic hepatitis B virus infection.

Document Type

Article

Publication Date

2-2017

JAX Source

Virology 2017; 502:63-72.

Volume

502

First Page

63

Last Page

72

ISSN

1096-0341

PMID

28006671

Grant

CA034196, CA016087, OD018338, AI079031, AI117213, AI122480, AI107301, The Jackson Laboratory

Abstract

There are ~350 million chronic carriers of hepatitis B (HBV). While a prophylactic vaccine and drug regimens to suppress viremia are available, chronic HBV infection is rarely cured. HBV's limited host tropism leads to a scarcity of susceptible small animal models and is a hurdle to developing curative therapies. Mice that support engraftment with human hepatoctyes have traditionally been generated through crosses of murine liver injury models to immunodeficient backgrounds. Here, we describe the disruption of fumarylacetoacetate hydrolase directly in the NOD Rag1(-/-) IL2RγNULL (NRG) background using zinc finger nucleases. The resultant human liver chimeric mice sustain persistent HBV viremia for >90 days. When treated with standard of care therapy, HBV DNA levels decrease below detection but rebound when drug suppression is released, mimicking treatment response observed in patients. Our study highlights the utility of directed gene targeting approaches in zygotes to create new humanized mouse models for human diseases. Virology 2017; 502:63-72.

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