How do we fit ferroptosis in the family of regulated cell death?

Howard O Fearnhead1, Peter Vandenabeele2,3, Tom Vanden Berghe2,3

  • 1Pharmacology and Therapeutics, Biomedical Sciences, Dangan, NUI Galway, Galway, Ireland.

Insights

Ferroptosis, a regulated cell death, involves iron-dependent lipid peroxidation. This study explores its similarities to other cell death types and its physiological roles.

Area of Science:

  • Cell Biology
  • Biochemistry
  • Physiology

Background:

  • New cell death modalities necessitate classification, distinguishing regulated cell death (RCD) from accidental cell death (ACD).
  • RCD involves genetically encoded machinery, with apoptosis, necroptosis, and pyroptosis playing key physiological roles.
  • ACD results from external insults, independent of signaling pathways.

Purpose of the Study:

  • To introduce ferroptosis as a distinct form of RCD.
  • To compare ferroptosis with other known RCD pathways.
  • To investigate the emerging physiological functions of ferroptosis.

Main Methods:

  • Review and synthesis of existing literature on cell death modalities.
  • Comparative analysis of molecular mechanisms underlying ferroptosis and other RCDs.
  • Exploration of experimental evidence regarding ferroptosis's physiological roles.

Main Results:

  • Ferroptosis is characterized by Fe(II)-dependent lipid peroxidation due to insufficient cellular reduction capacity.
  • Ferroptosis shares characteristics with other RCDs, involving specific molecular machinery.
  • Emerging evidence suggests significant physiological roles for ferroptosis.

Conclusions:

  • Ferroptosis represents a distinct, regulated cell death pathway.
  • Understanding ferroptosis's mechanisms and roles is crucial for comprehending cell death biology.
  • Further research is needed to fully elucidate the physiological significance of ferroptosis.

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