Nat Cell Biol. 2002 Nov;4(11):865-70.

PML-dependent apoptosis after DNA damage is regulated by the checkpoint kinase hCds1/Chk2.

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Laboratory of Biochemical Genetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA.

Abstract

The promyelocytic leukaemia (PML) gene is translocated in most acute promyelocytic leukaemias and encodes a tumour suppressor protein. PML is involved in multiple apoptotic pathways and is thought to be pivotal in gamma irradiation-induced apoptosis. The DNA damage checkpoint kinase hCds1/Chk2 is necessary for p53-dependent apoptosis after gamma irradiation. In addition, gamma irradiation-induced apoptosis also occurs through p53-independent mechanisms, although the molecular mechanism remains largely unknown. Here, we report that hCds1/Chk2 mediates gamma irradiation-induced apoptosis in a p53-independent manner through an ataxia telangiectasia-mutated (ATM)-hCds1/Chk2-PML pathway. Our results provide the first evidence of a functional relationship between PML and a checkpoint kinase in gamma irradiation-induced apoptosis.

Comment in

Chk2 leaves the PML depot. [Nat Cell Biol. 2002]
Chk2 leaves the PML depot.Venere M, Mochan TA, Halazonetis TD. Nat Cell Biol. 2002 Nov; 4(11):E255-6.

PMID:: 12402044; [PubMed - indexed for MEDLINE]

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Nat Cell Biol. 2002 Nov ;4(11):865-70.

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