Requirement of p34(cdc2) kinase for apoptosis mediated by the Fas/APO-1 receptor and interleukin 1β-converting enzyme-related proteases

Siu Long Yao, Karen A. McKenna, Saul J. Sharkis, Atul Bedi

Research output: Contribution to journalArticle

Abstract

The induction of apoptosis by the Fas/APO-1 receptor is important for T- cell-mediated cytotoxicity and down-regulation of immune responses. Binding of Fas ligand to the Fas/APO-1 receptor transduces an apoptotic signal that requires activation of interleukin 1β-converting enzyme (ICE) and CPP32β, members of a family of cysteine proteases that are evolutionarily conserved determinants of cell death. We report here that Fas/APO-1-triggered apoptosis involves ICE-mediated activation of p34(cdc2) kinase. Ligation of the Fas receptor resulted in the rapid stimulation of ICE proteolytic activity and activation of p34(cdc2) kinase. Specific tetrapeptide inhibitors of ICE (Acetyl-Tyr-Val-Ala-Asp-chloromethylketone) or CPP32β (Acetyl-Asp-Glu-Val- Asp-aldehyde) prevented the anti-Fas antibody-mediated activation of p34(cdc2) and inhibited apoptosis. Inhibition of p34(cdc2) activity by transient overexpression of a dominant-negative cdc2 construct or human WEE1 kinase inhibited Fas-mediated apoptosis. These results suggest that activation of p34(cdc2) kinase is a critical determinant of cell death mediated by Fas and ICE family proteases.

Original languageEnglish (US)
Pages (from-to)4551-4555
Number of pages5
JournalCancer Research
Volume56
Issue number20
StatePublished - Oct 15 1996

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Caspase 1
Peptide Hydrolases
Phosphotransferases
Apoptosis
Cell Death
CD95 Antigens
Enzyme Activation
Fas Ligand Protein
Cysteine Proteases
Aldehydes
Ligation
Anti-Idiotypic Antibodies
Down-Regulation
T-Lymphocytes

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

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Requirement of p34(cdc2) kinase for apoptosis mediated by the Fas/APO-1 receptor and interleukin 1β-converting enzyme-related proteases. / Yao, Siu Long; McKenna, Karen A.; Sharkis, Saul J.; Bedi, Atul.

In: Cancer Research, Vol. 56, No. 20, 15.10.1996, p. 4551-4555.

Research output: Contribution to journalArticle

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