The effect of cellular differentiation on HSV-1 infection of oligodendrocytic cells

PLoS One. 2014 Feb 13;9(2):e89141. doi: 10.1371/journal.pone.0089141. eCollection 2014.

Abstract

Herpes simplex type 1 (HSV-1) is a neurotropic virus that infects many types of cells. Previous studies have demonstrated that oligodendrocytic cells are highly susceptible to HSV-1 infection. Here we analysed HSV-1 infection of a human oligodendrocytic cell line, HOG, and oligodendrocyte precursor cells (OPCs) cultured under growth or differentiation conditions. In addition to cell susceptibility, the role of the major cell receptors for viral entry was assessed. Our results revealed that OPCs and HOG cells cultured under differentiation conditions became more susceptible to HSV-1. On the other hand, viral infection induced morphological changes corresponding to differentiated cells, suggesting that HSV-1 might be inducing cell differentiation. We also observed colocalization of HVEM and nectin-1 with viral particles, suggesting that these two major HSV-1 receptors are functional in HOG cells. Finally, electron microscopy assays indicated that HSV-1 may be also entering OLs by macropinocytosis depending on their differentiation stage. In addition, vesicles containing intracellular enveloped virions observed in differentiated cells point to an endocytic mechanism of virus entry. All these data are indicative of diverse entry pathways dependent on the maturation stage of OLs.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Adhesion Molecules / genetics
  • Cell Adhesion Molecules / metabolism
  • Cell Differentiation / genetics*
  • Cell Line
  • Cell Proliferation
  • Endocytosis
  • Gene Expression Regulation
  • Herpesvirus 1, Human / genetics*
  • Herpesvirus 1, Human / metabolism
  • Host-Pathogen Interactions*
  • Humans
  • Nectins
  • Oligodendroglia / metabolism
  • Oligodendroglia / pathology
  • Oligodendroglia / virology*
  • Receptors, Tumor Necrosis Factor, Member 14 / genetics
  • Receptors, Tumor Necrosis Factor, Member 14 / metabolism
  • Receptors, Virus / genetics
  • Receptors, Virus / metabolism
  • Virion / genetics*
  • Virion / metabolism
  • Virus Internalization

Substances

  • Cell Adhesion Molecules
  • NECTIN1 protein, human
  • Nectins
  • Receptors, Tumor Necrosis Factor, Member 14
  • Receptors, Virus
  • TNFRSF14 protein, human