Mitophagy programs: Mechanisms and physiological implications of mitochondrial targeting by autophagy

Research output: Contribution to journalReview article

Abstract

Mitochondria are an essential source of ATP for cellular function, but when damaged, mitochondria generate a plethora of stress signals, which lead to cellular dysfunction and eventually programmed cell death. Thus, a major component of maintaining cellular homeostasis is the recognition and removal of dysfunctional mitochondria through autophagy-mediated degradation, i.e., mitophagy. Mitophagy further constitutes a developmental program, and undergoes a high degree of crosstalk with apoptosis. Reduced mitochondrial quality control is linked to disease pathogenesis, suggesting the importance of process elucidation as a clinical target. Recent work has revealed multiple mitophagy programs that operate independently or undergo crosstalk, and require modulated autophagy receptor activities at outer membranes of mitochondria. Here, we review these mitophagy programs, focusing on pathway mechanisms which recognize and target mitochondria for sequestration by autophagosomes, as well as mechanisms controlling pathway activities. Furthermore, we provide an introduction to the currently available methods for detecting mitophagy.

Original languageEnglish (US)
Pages (from-to)775-795
Number of pages21
JournalCellular and Molecular Life Sciences
Volume73
Issue number4
DOIs
StatePublished - Feb 2016
Externally publishedYes

    Fingerprint

Keywords

  • Bnip3
  • FUNDC1
  • LC3-interacting region (LIR)
  • Macroautophagy
  • Mitophagy
  • Nix
  • Parkin E3 ligase
  • Ubiquitin

ASJC Scopus subject areas

  • Molecular Medicine
  • Molecular Biology
  • Pharmacology
  • Cellular and Molecular Neuroscience
  • Cell Biology

Cite this