CDK1 regulates mediator of DNA damage checkpoint 1 during mitotic DNA damage

Bing Yu, W. Brian Dalton, Vincent W. Yang

Research output: Contribution to journalArticlepeer-review


Cells engage sophisticated programs of DNA damage response (DDR) and repair to guard against genetic mutations. Although there is significant knowledge concerning DDR in interphase cells, much less is known about these processes in mitosis. Direct interaction between MDC1, a master DDR organizer, and a marker of DNA damage, histone γH2AX, is required to trigger robust repair. Here we show that the DNA damage-induced interaction between MDC1 and γH2AX is attenuated in mitosis. Furthermore, inhibition in the activity of the core mitotic regulator CDK1, either by pharmacologic inhibition or siRNA attenuation, enhances MDC1-γH2AX colocalization in mitosis. Our findings offer key new insights into how DDR is controlled during mitosis.

Original languageEnglish (US)
Pages (from-to)5448-5453
Number of pages6
JournalCancer Research
Issue number21
StatePublished - Nov 1 2012
Externally publishedYes

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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