Abstract
The cellular response to ionizing radiation (IR) includes the induction of apoptosis. The p300/CBP proteins possess histone acetyltransferase activity and function as transcriptional coactivators of p53. We have prepared cells deficient in p300 or CBP to define the roles of these proteins in the cellular response to DNA damage. The present results demonstrate that p300, but not CBP, contributes to IR sensitivity of cells. The results also demonstrate that IR-induced apoptosis is impaired in the p300-, but not CBP-, deficient cells. These findings indicate that p300 functions in the apoptotic response to DNA damage.
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Acknowledgements
This investigation was supported by PHS Grant CA55241 awarded by the National Cancer Institute, DHHS.
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Yuan, ZM., Huang, Y., Ishiko, T. et al. Function for p300 and not CBP in the apoptotic response to DNA damage. Oncogene 18, 5714–5717 (1999). https://doi.org/10.1038/sj.onc.1202930
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DOI: https://doi.org/10.1038/sj.onc.1202930
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