Počet záznamů: 1  

Residual Cdk1/2 activity after DNA damage promotes senescence

  1. 1.
    0486699 - ÚMG 2018 RIV GB eng J - Článek v odborném periodiku
    Müllers, E. - Cascales, H.S. - Burdová, Kamila - Macůrek, Libor - Lindqvist, A.
    Residual Cdk1/2 activity after DNA damage promotes senescence.
    Aging Cell. Roč. 16, č. 3 (2017), s. 575-584. ISSN 1474-9718. E-ISSN 1474-9726
    Grant CEP: GA ČR GA13-18392S
    Institucionální podpora: RVO:68378050
    Klíčová slova: Cdk1 * Cdk2 * cell cycle * checkpoint recovery * DNA damage response * G2phase * p21 * senescence
    Obor OECD: Biochemistry and molecular biology
    Impakt faktor: 7.627, rok: 2017

    In response to DNA damage, a cell can be forced to permanently exit the cell cycle and become senescent. Senescence provides an early barrier against tumor development by preventing proliferation of cells with damaged DNA. By studying single cells, we show that Cdk activity persists after DNA damage until terminal cell cycle exit. This low level of Cdk activity not only allows cell cycle progression, but also promotes cell cycle exit at a decision point in G2 phase. We find that residual Cdk1/2 activity is required for efficient p21 production, allowing for nuclear sequestration of Cyclin B1, subsequent APC/C-Cdh1-dependent degradation of mitotic inducers and induction of senescence. We suggest that the same activity that triggers mitosis in an unperturbed cell cycle enforces senescence in the presence of DNA damage, ensuring a robust response when most needed.
    Trvalý link: http://hdl.handle.net/11104/0281444

     
     
Počet záznamů: 1  

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