0576852 - ÚŽFG 2024 RIV US eng J - Článek v odborném periodiku
Knoblochová, Lucie - Ďuríček, Tomáš - Vaškovičová, Michaela - Zorzompokou, Chrysoula - Rayová, Diana - Ferencová, Ivana - Baran, V. - Schultz, R. M. - Hoffmann, E. R. - Drutovič, Dávid
CHK1-CDC25A-CDK1 regulate cell cycle progression and protect genome integrity in early mouse embryos.
Embo Reports. Roč. 24, č. 10 (2023), č. článku e56530. ISSN 1469-221X. E-ISSN 1469-3178
Grant CEP: GA ČR(CZ) GA20-27742S
Institucionální podpora: RVO:67985904
Klíčová slova: CDC25A phosphatase * CDK1 kinase * cell cycle regulation * CHK1 kinase * early mouse embryos
Obor OECD: Developmental biology
Impakt faktor: 6.5, rok: 2023 ; AIS: 3.275, rok: 2023
Způsob publikování: Open access
Web výsledku:
https://www.embopress.org/doi/full/10.15252/embr.202256530DOI: https://doi.org/10.15252/embr.202256530

After fertilization, remodeling of the oocyte and sperm genomes is essential to convert these highly differentiated and transcriptionally quiescent cells into early cleavage-stage blastomeres that are transcriptionally active and totipotent. This developmental transition is accompanied by cell cycle adaptation, such as lengthening or shortening of the gap phases G1 and G2. However, regulation of these cell cycle changes is poorly understood, especially in mammals. Checkpoint kinase 1 (CHK1) is a protein kinase that regulates cell cycle progression in somatic cells. Here, we show that CHK1 regulates cell cycle progression in early mouse embryos by restraining CDK1 kinase activity due to CDC25A phosphatase degradation. CHK1 kinase also ensures the long G2 phase needed for genome activation and reprogramming gene expression in two-cell stage mouse embryos. Finally, Chk1 depletion leads to DNA damage and chromosome segregation errors that result in aneuploidy and infertility.
Trvalý link: https://hdl.handle.net/11104/0346247