Parallel mRNA and microRNA profiling of HEV71-infected human neuroblastoma cells reveal the up-regulation of miR-1246 in association with DLG3 repression

PLoS One. 2014 Apr 16;9(4):e95272. doi: 10.1371/journal.pone.0095272. eCollection 2014.

Abstract

Human enterovirus 71 (HEV71) has emerged as the leading cause of viral encephalitis in children in most Asian countries. The roles of host miRNAs in the neurological pathogenesis of HEV71 infection remain unknown. In the present study, comprehensive miRNA expression profiling in HEV71-infected human neuroblastoma SH-SY5Y cells was performed using the Affymetrix Gene Chip microarray assay and was validated using real-time RT-PCR. Among the 69 differentially expressed miRNAs, miR-1246 was specifically induced by HEV71 infection in human neuroblastoma cells, but inhibition of miR-1246 failed to affect HEV71 replication. Parallel mRNA and microRNA profiling based on the 35 K Human Genome Array identified 182 differentially regulated genes. Target prediction of miR-1246 and network modeling revealed 14 potential target genes involved in cell death and cell signaling. Finally, a combined analysis of the results from mRNA profiling and miR-1246 target predication led to the identification of disc-large homolog 3 (DLG3), which is associated with neurological disorders, for further validation. Sequence alignment and luciferase reporter assay showed that miR-1246 directly bound with the 3'-UTR of DLG3 gene. Down-regulation of miR-1246 induced significant changes in DLG3 expression levels in HEV71-infected SHSY5Y cells. Together, these results suggested that miR-1246 might play a role in neurological pathogenesis of HEV71 by regulating DLG3 gene in infected cells. These findings provide new information on the miRNA and mRNA profiles of HEV71-infected neuroblastoma cells. The biological significance of miR-1246 and DLG3 during the course of HEV71 infection deserves further investigation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 3' Untranslated Regions
  • Animals
  • Base Sequence
  • Binding Sites
  • Cell Line, Tumor
  • Chlorocebus aethiops
  • Enterovirus A, Human / genetics*
  • Enterovirus A, Human / metabolism
  • Gene Expression Profiling
  • Gene Expression Regulation
  • Gene Regulatory Networks*
  • Genes, Reporter
  • Host-Pathogen Interactions / genetics*
  • Humans
  • Luciferases / genetics
  • Luciferases / metabolism
  • MicroRNAs / genetics*
  • MicroRNAs / metabolism
  • Molecular Sequence Data
  • Neurons / metabolism*
  • Neurons / pathology
  • Neurons / virology
  • Nuclear Proteins / genetics*
  • Nuclear Proteins / metabolism
  • Protein Interaction Mapping
  • Sequence Alignment
  • Signal Transduction
  • Transcription Factors / genetics*
  • Transcription Factors / metabolism
  • Vero Cells

Substances

  • 3' Untranslated Regions
  • DLG3 protein, human
  • MIRN1246 microRNA, human
  • MicroRNAs
  • Nuclear Proteins
  • Transcription Factors
  • Luciferases

Grants and funding

This work was supported by the Beijing Natural Science Foundation (No. 7122129 and No. 7112108) and the National Natural Science Foundation of China (No. 81000721 and No. 31270195). CFQ was supported by the Beijing Nova Program of Science and Technology (No. 2010B041). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.