AMPK: Balancing mitochondrial quality and quantity through opposite regulation of mitophagy pathways

Mol Cell. 2024 Nov 21;84(22):4261-4263. doi: 10.1016/j.molcel.2024.10.040.

Abstract

In this issue of Molecular Cell, Longo et al.1 reveal that AMPK, a regulatory kinase activated by metabolic stress, inhibits NIX/BNIP3-dependent mitophagy to preserve mitochondrial quantity and activates PINK1/Parkin-dependent mitophagy to ensure mitochondrial quality.

MeSH terms

  • AMP-Activated Protein Kinases* / genetics
  • AMP-Activated Protein Kinases* / metabolism
  • Animals
  • Humans
  • Membrane Proteins / genetics
  • Membrane Proteins / metabolism
  • Mitochondria* / enzymology
  • Mitochondria* / metabolism
  • Mitochondrial Proteins / genetics
  • Mitochondrial Proteins / metabolism
  • Mitophagy*
  • Protein Kinases* / genetics
  • Protein Kinases* / metabolism
  • Signal Transduction
  • Ubiquitin-Protein Ligases / genetics
  • Ubiquitin-Protein Ligases / metabolism

Substances

  • AMP-Activated Protein Kinases
  • Protein Kinases
  • PTEN-induced putative kinase
  • Ubiquitin-Protein Ligases
  • parkin protein
  • Mitochondrial Proteins
  • Membrane Proteins