Susceptibility of human embryonic stem cell-derived neural cells to Japanese encephalitis virus infection

PLoS One. 2014 Dec 17;9(12):e114990. doi: 10.1371/journal.pone.0114990. eCollection 2014.

Abstract

Pluripotent human embryonic stem cells (hESCs) can be efficiently directed to become immature neuroepithelial precursor cells (NPCs) and functional mature neural cells, including neurotransmitter-secreting neurons and glial cells. Investigating the susceptibility of these hESCs-derived neural cells to neurotrophic viruses, such as Japanese encephalitis virus (JEV), provides insight into the viral cell tropism in the infected human brain. We demonstrate that hESC-derived NPCs are highly vulnerable to JEV infection at a low multiplicity of infection (MOI). In addition, glial fibrillary acid protein (GFAP)-expressing glial cells are also susceptible to JEV infection. In contrast, only a few mature neurons were infected at MOI 10 or higher on the third day post-infection. In addition, functional neurotransmitter-secreting neurons are also resistant to JEV infection at high MOI. Moreover, we discover that vimentin intermediate filament, reported as a putative neurovirulent JEV receptor, is highly expressed in NPCs and glial cells, but not mature neurons. These results indicate that the expression of vimentin in neural cells correlates to the cell tropism of JEV. Finally, we further demonstrate that membranous vimentin is necessary for the susceptibility of hESC-derived NPCs to JEV infection.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Line
  • Embryonic Stem Cells / cytology*
  • Encephalitis Virus, Japanese / physiology*
  • Gene Expression Regulation
  • Humans
  • Neuroepithelial Cells / cytology*
  • Neuroepithelial Cells / metabolism
  • Neuroepithelial Cells / virology*
  • Neuroglia / cytology
  • Neuroglia / metabolism
  • Neuroglia / virology
  • Vimentin / metabolism
  • Viral Tropism

Substances

  • Vimentin

Grants and funding

This work was supported by grants from the National Science Council of Taiwan (NSC 101-2811-B-005-015-MY3 and 102-2628-B-005-007-MY3) and the Taichung Veterans General Hospital/National Chung Hsing University Joint Research Program (TCVGH-NCHU 1017604 and 1027607). This research was also funded in part by the Ministry of Education, Taiwan, Republic of China, under the ATU plan. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.