Human induced pluripotent stem cell-derived hepatic cell lines as a new model for host interaction with hepatitis B virus

Sci Rep. 2016 Jul 8:6:29358. doi: 10.1038/srep29358.

Abstract

Hepatitis B virus (HBV) is not eradicated by current antiviral therapies due to persistence of HBV covalently closed circular DNA (cccDNA) in host cells, and thus development of novel culture models for productive HBV infection is urgently needed, which will allow the study of HBV cccDNA eradication. To meet this need, we developed culture models of HBV infection using human induced pluripotent stem cell-derived hepatocyte lineages, including immature proliferating hepatic progenitor-like cell lines (iPS-HPCs) and differentiated hepatocyte-like cells (iPS-Heps). These cells were susceptible to HBV infection, produced HBV particles, and maintained innate immune responses. The infection efficiency of HBV in iPS-HPCs predominantly depended on the expression levels of sodium taurocholate cotransporting polypeptide (NTCP), and was low relative to iPS-Heps: however, long-term culture of iPS-Heps was difficult. To provide a model for HBV persistence, iPS-HPCs overexpressing NTCP were established. The long-term persistence of HBV cccDNA was detected in iPS-HPCs overexpressing NTCP, and depended on the inhibition of the Janus-kinase signaling pathway. In conclusion, this study provides evidence that iPS-derived hepatic cell lines can be utilized for novel HBV culture models with genetic variation to investigate the interactions between HBV and host cells and the development of anti-HBV strategies.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Differentiation
  • Cell Line
  • Cell Proliferation
  • DNA, Circular / genetics*
  • DNA, Circular / immunology
  • DNA, Viral / genetics
  • DNA, Viral / immunology
  • Hep G2 Cells
  • Hepatitis B / genetics
  • Hepatitis B / immunology
  • Hepatitis B / metabolism
  • Hepatitis B / virology*
  • Hepatitis B virus / genetics
  • Hepatitis B virus / immunology
  • Hepatitis B virus / physiology*
  • Hepatocytes / cytology*
  • Hepatocytes / immunology
  • Hepatocytes / metabolism
  • Hepatocytes / virology
  • Humans
  • Immunity, Innate
  • Induced Pluripotent Stem Cells / cytology*
  • Induced Pluripotent Stem Cells / immunology
  • Induced Pluripotent Stem Cells / metabolism
  • Induced Pluripotent Stem Cells / virology
  • MAP Kinase Signaling System
  • Models, Biological*
  • Organic Anion Transporters, Sodium-Dependent / genetics
  • Organic Anion Transporters, Sodium-Dependent / metabolism*
  • Symporters / genetics
  • Symporters / metabolism*
  • Transfection
  • Virus Replication

Substances

  • DNA, Circular
  • DNA, Viral
  • Organic Anion Transporters, Sodium-Dependent
  • Symporters
  • sodium-bile acid cotransporter