Network analysis reveals common host protein/s modulating pathogenesis of neurotropic viruses

Sci Rep. 2016 Sep 1:6:32593. doi: 10.1038/srep32593.

Abstract

Network analysis through graph theory provides a quantitative approach to characterize specific proteins and their constituent assemblies that underlie host-pathogen interactions. In the present study, graph theory was used to analyze the interactome designed out of 50 differentially expressing proteins from proteomic analysis of Chandipura Virus (CHPV, Family: Rhabdoviridae) infected mouse brain tissue to identify the primary candidates for intervention. Using the measure of degree centrality, that quantifies the connectedness of a single protein within a milieu of several other interacting proteins, DJ-1 was selected for further molecular validation. To elucidate the generality of DJ-1's role in propagating infection its role was also monitored in another RNA virus, Japanese Encephalitis Virus (JEV, Family: Flaviviridae) infection. Concurrently, DJ-1 got over-expressed in response to reactive oxygen species (ROS) generation following viral infection which in the early phase of infection migrated to mitochondria to remove dysfunctional mitochondria through the process of mitophagy. DJ-1 was also observed to modulate the viral replication and interferon responses along with low-density lipoprotein (LDL) receptor expression in neurons. Collectively these evidences reveal a comprehensive role for DJ-1 in neurotropic virus infection in the brain.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Brain / metabolism
  • Brain / pathology
  • Brain / virology
  • Cell Line, Tumor
  • Computational Biology / methods
  • Encephalitis Virus, Japanese / genetics
  • Encephalitis Virus, Japanese / growth & development*
  • Encephalitis Virus, Japanese / pathogenicity
  • Female
  • Gene Expression Regulation
  • Gene Regulatory Networks*
  • Host-Pathogen Interactions
  • Male
  • Mice
  • Mice, Inbred BALB C
  • Mitochondria / metabolism
  • Mitochondria / pathology
  • Mitochondria / virology
  • Mitophagy
  • Neurons / metabolism*
  • Neurons / pathology
  • Neurons / virology
  • Oxidative Stress
  • Protein Deglycase DJ-1 / genetics*
  • Protein Deglycase DJ-1 / metabolism
  • Protein Transport
  • Reactive Oxygen Species / metabolism
  • Receptors, LDL / genetics*
  • Receptors, LDL / metabolism
  • Signal Transduction
  • Vesiculovirus / genetics
  • Vesiculovirus / growth & development*
  • Vesiculovirus / pathogenicity
  • Virus Replication / genetics

Substances

  • Reactive Oxygen Species
  • Receptors, LDL
  • PARK7 protein, mouse
  • Protein Deglycase DJ-1