Mechanisms of mitochondria and autophagy crosstalk

Cell Cycle. 2011 Dec 1;10(23):4032-8. doi: 10.4161/cc.10.23.18384. Epub 2011 Dec 1.

Abstract

Autophagy is a cellular survival pathway that recycles intracellular components to compensate for nutrient depletion and ensures the appropriate degradation of organelles. Mitochondrial number and health are regulated by mitophagy, a process by which excessive or damaged mitochondria are subjected to autophagic degradation. Autophagy is thus a key determinant for mitochondrial health and proper cell function. Mitophagic malfunction has been recently proposed to contribute to progressive neuronal loss in Parkinson's disease. In addition to autophagy's significance in mitochondrial integrity, several lines of evidence suggest that mitochondria can also substantially influence the autophagic process. The mitochondria's ability to influence and be influenced by autophagy places both elements (mitochondria and autophagy) in a unique position where defects in one or the other system could increase the risk to various metabolic and autophagic related diseases.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Apoptosis
  • Autophagy*
  • DNA Replication*
  • DNA, Mitochondrial / genetics
  • DNA, Mitochondrial / metabolism
  • Humans
  • Mammals
  • Metabolic Diseases / genetics
  • Metabolic Diseases / metabolism
  • Microtubule-Associated Proteins / genetics
  • Microtubule-Associated Proteins / metabolism
  • Mitochondria / genetics
  • Mitochondria / metabolism
  • Mitochondria / physiology*
  • Mitochondrial Membranes / metabolism
  • Mitochondrial Membranes / physiology
  • Mitochondrial Proteins / genetics
  • Mitochondrial Proteins / metabolism
  • Stress, Physiological

Substances

  • DNA, Mitochondrial
  • Microtubule-Associated Proteins
  • Mitochondrial Proteins