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Regulating the reapers: activating metacaspases for programmed cell death

Eric Lam1, Yi Zhang

  • 1Department of Plant Biology & Pathology, Rutgers, the State University of New Jersey, New Brunswick, NJ 08901, USA. Lam@aesop.rutgers.edu

Trends in Plant Science
|June 5, 2012
PubMed

Insights

Specialized cysteine proteases, like caspases and metacaspases (MCs), are key regulators of programmed cell death (PCD) across eukaryotes. Research is uncovering how MCs control cellular suicide in plants and other organisms.

Area of Science:

  • Molecular Biology
  • Biochemistry
  • Cell Biology

Background:

  • Cysteine proteases are conserved regulators of programmed cell death (PCD) in eukaryotes.
  • Caspases are well-established PCD regulators in metazoans.
  • Metacaspases (MCs) are emerging as key regulators of cellular suicide in plants.

Purpose of the Study:

  • To review the current understanding of metacaspase (MC) function in programmed cell death (PCD).
  • To highlight the emerging mechanisms of post-translational regulation of MCs.
  • To emphasize the need for further research into MCs' downstream targets and regulatory pathways.

Main Methods:

  • Literature review of recent research on metacaspases.
  • Analysis of genetic, biochemical, and molecular data on MCs.
  • Comparative study of MCs across different model systems.

Main Results:

  • Metacaspases (MCs) are increasingly recognized as crucial for PCD in plants.
  • Multiple post-translational regulatory mechanisms for MCs are being identified.
  • Understanding MC regulation is key to deciphering cell death control.

Conclusions:

  • Metacaspases (MCs) play significant roles in programmed cell death (PCD) in plants, protozoans, and fungi.
  • Further research on MC regulatory pathways and targets will advance understanding of cellular suicide.
  • Elucidating MC function is critical for comprehending eukaryotic cell death control.

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