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Cancer Cell. 2003 May;3(5):421-9.

Chk1 and Chk2 kinases in checkpoint control and cancer.

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Department of Cell Cycle and Cancer, Institute of Cancer Biology, Danish Cancer Society, Copenhagen, Denmark.


Accumulation of mutations and chromosomal aberrations is one of the hallmarks of cancer cells. This enhanced genetic instability is fueled by defects in the genome maintenance mechanisms including DNA repair and cell cycle checkpoint pathways. Here, we discuss the emerging roles of the mammalian Chk1 and Chk2 kinases as key signal transducers within the complex network of genome integrity checkpoints, as candidate tumor suppressors disrupted in sporadic as well as some hereditary malignancies and as potential targets of new anticancer therapies.

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