Role of mitochondria in parvovirus pathology

PLoS One. 2014 Jan 21;9(1):e86124. doi: 10.1371/journal.pone.0086124. eCollection 2014.

Abstract

Proper functioning of the mitochondria is crucial for the survival of the cell. Viruses are able to interfere with mitochondrial functions as they infect the host cell. Parvoviruses are known to induce apoptosis in infected cells, but the role of the mitochondria in parvovirus induced cytopathy is only partially known. Here we demonstrate with confocal and electron microscopy that canine parvovirus (CPV) associated with the mitochondrial outer membrane from the onset of infection. During viral entry a transient depolarization of the mitochondrial transmembrane potential and increase in ROS level was detected. Subsequently, mitochondrial homeostasis was normalized shortly, as detected by repolarization of the mitochondrial membrane and decrease of ROS. Indeed, activation of cell survival signalling through ERK1/2 cascade was observed early in CPV infected cells. At 12 hours post infection, concurrent with the expression of viral non-structural protein 1, damage to the mitochondrial structure and depolarization of its membrane were apparent. Results of this study provide additional insight of parvovirus pathology and also more general information of virus-mitochondria association.

MeSH terms

  • Animals
  • Calcium / metabolism
  • Cats
  • Cell Line
  • Dogs
  • Enzyme Activation
  • Extracellular Signal-Regulated MAP Kinases / metabolism
  • MAP Kinase Signaling System
  • Membrane Potential, Mitochondrial
  • Mitochondria / metabolism*
  • Mitochondria / pathology
  • Mitochondria / ultrastructure
  • Mitochondrial Membranes / metabolism
  • Mitochondrial Membranes / ultrastructure
  • Mitochondrial Membranes / virology
  • Parvoviridae Infections / pathology*
  • Parvoviridae Infections / virology*
  • Parvovirus, Canine / physiology*
  • Reactive Oxygen Species / metabolism

Substances

  • Reactive Oxygen Species
  • Extracellular Signal-Regulated MAP Kinases
  • Calcium

Grants and funding

The authors have no support or funding to report.