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• W2317786914 endingPage "7422" @default.
• W2317786914 startingPage "7409" @default.
• W2317786914 abstract "The cdk2 gene has been identified as a human cdc2/CDC28-related gene that encodes a protein kinase essential for the G1/S transition in mammalian cells, but not for the G2/M transition, which requires Cdk1, another p34cdc2/CDC28 homolog. Novel potential functions of Cdk2 have been uncovered by using two potent and specific inhibitors of its kinase activity, roscovitine and olomoucine, on human wt p53-expresser untransformed and tumor-derived cells. At concentrations equal or superior to respectively 30- and 20-fold their in vitro IC50 values for cyclin B/Cdk1, cyclin A/Cdk2 and cyclin E/Cdk2, the Cdk inhibitors precipitately induce a dramatic nuclear accumulation of wt p53 and a delocalization of nucleolin from the nucleolus in all interphase cells, whatever their cell cycle status, acting in this way like the DNA-damaging drug, mitomycin C (7 microg/ml). These early events are soon followed by a nucleolar fragmentation in both normal and tumor cells in the presence of the Cdk inhibitors but not in the presence of the DNA-damaging drug. Yet, treatment with either type of compounds eventually triggers rapidly the death of the tumor cells and, much more slowly, that of the normal cells. The Cdk inhibitors, however, stimulate cell death from any stage of the cell cycle, whereas the DNA-damaging drug kills more efficaciously S phase cells. These observations provide a hint that the Cdk2 kinase might be involved in controlling the nuclear levels of the tumor suppressor wt p53 protein and in maintaining the nucleolar integrity and function, linking in this way the cell division cycle machinery to survival functions and overall cell metabolism via the control of nucleocytoplasmic transport and of ribosome production." @default.
• W2317786914 created "2016-06-24" @default.
• W2317786914 creator A5043881222 @default.
• W2317786914 date "1999-12-09" @default.
• W2317786914 modified "2023-09-30" @default.
• W2317786914 title "Potent inhibitors of cyclin-dependent kinase 2 induce nuclear accumulation of wild-type p53 and nucleolar fragmentation in human untransformed and tumor-derived cells" @default.
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• W2317786914 doi "https://doi.org/10.1038/sj.onc.1203103" @default.
• W2317786914 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/10602500" @default.
• W2317786914 hasPublicationYear "1999" @default.
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