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Cited by 164

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Inhibition of Polo-like Kinase-1 by DNA Damage Occurs in an ATM- or ATR-dependent Fashion

Open access
van Vugt, Marcel A.T.M., Smits, Veronique A.J., Klompmaker, Rob, Medema, René H.·2001·Journal of Biological Chemistry

Abstract

Polo-like kinases play multiple roles in different phases of mitosis. We have recently shown that the mammalian polo-like kinase, Plk1, is inhibited in response to DNA damage and that this inhibition may lead to cell cycle arrests at multiple points in mitosis. Here we have investigated the role of the checkpoint kinases ATM (ataxia telangiectasia mutated) and ATR (ATM- and Rad3-related) in DNA damage-induced inhibition of Plk1. We show that inhibition of Plk1 kinase activity is efficiently blocked by the radio-sensitizing agent caffeine. Using ATM(-/-) cells we show that under certain circumstances, inhibition of Plk1 by DNA-damaging agents critically depends on ATM. In addition, we show that UV radiation also causes inhibition of Plk1, and we present evidence that this inhibition is mediated by ATR. Taken together, our data demonstrate that ATM and ATR can regulate Plk1 kinase activity in response to a variety of DNA-damaging agents.

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Metadata

Authors
van Vugt, M. A. T. M., Smits, V. A. J., Klompmaker, R., & Medema, R. H.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2001-11
Volume
276
Issue
45
Pages
41656-41660
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2143916467
Cited by
164
References
6
FWCI
3.69
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Inhibition of Polo-like Kinase-1 by DNA Damage Occurs in an ATM- or ATR-dependent Fashion. https://app.cochat.ai/papers/10.1074/jbc.m101831200
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van Vugt, M. A. T. M., Smits, V. A. J., Klompmaker, R., & Medema, R. H. (2001). Inhibition of Polo-like Kinase-1 by DNA Damage Occurs in an ATM- or ATR-dependent Fashion. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m101831200

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