Distinct intracellular trafficking of hepatitis C virus in myeloid and plasmacytoid dendritic cells

J Virol. 2010 Sep;84(17):8964-9. doi: 10.1128/JVI.00517-10. Epub 2010 Jun 23.

Abstract

Dendritic cells (DCs) are of pivotal importance for the initiation of immune responses to control and eliminate viral infections. The molecular mechanisms of hepatitis C virus (HCV) antigen uptake and processing by blood DCs are poorly defined. Here we show that human blood DC subsets acquire HCV independent of the classical HCV entry factors. Following HCV uptake, human plasmacytoid and myeloid DC subsets deliver HCV antigen into distinct endocytotic compartments, which are dedicated to presentation to CD4(+) or CD8(+) T cells. Our findings support a model of HCV antigen processing and presentation in which DC subsets fulfill distinct functions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cells, Cultured
  • Dendritic Cells / immunology*
  • Dendritic Cells / metabolism
  • Dendritic Cells / virology
  • Hepacivirus / immunology*
  • Hepacivirus / physiology
  • Hepatitis C / immunology*
  • Hepatitis C / metabolism
  • Hepatitis C / virology
  • Hepatitis C Antigens / immunology
  • Hepatitis C Antigens / metabolism
  • Humans
  • Myeloid Cells / immunology
  • Myeloid Cells / metabolism
  • Myeloid Cells / virology*
  • Protein Transport

Substances

  • Hepatitis C Antigens