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Caspase-2: an orphan enzyme out of the shadows

J Forsberg1, B Zhivotovsky1,2, M Olsson1

  • 1Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.

Oncogene
|June 6, 2017
PubMed

Insights

Caspase-2, a protease, traditionally viewed in apoptosis, is now recognized for roles in cell proliferation. Its catalytic activity is crucial for genomic stability and tumor suppression, challenging prior understanding.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Caspase-2 has been traditionally classified as an initiator or executioner protease in apoptosis.
  • Emerging evidence suggests a more complex and debated role for caspase-2 beyond its apoptotic functions.

Purpose of the Study:

  • To summarize recent findings in caspase-2 research.
  • To reconcile conflicting evidence regarding caspase-2's functions.
  • To discuss the implications of these findings for future research directions.

Main Methods:

  • Literature review of recent caspase-2 research.
  • Analysis of experimental data implicating caspase-2 in cell proliferation.
  • Synthesis of current understanding of caspase-2's enzymatic activity.

Main Results:

  • Caspase-2's catalytic activity is linked to essential cell proliferation functions.
  • Evidence supports caspase-2's role in counteracting genomic instability.
  • Caspase-2 activity is implicated in suppressing tumorigenesis.

Conclusions:

  • The traditional view of caspase-2 solely as an apoptotic protease is being challenged.
  • Caspase-2 plays significant roles in maintaining genomic stability and preventing cancer.
  • Further research is needed to fully elucidate the multifaceted functions of caspase-2.

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