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- _5 value "We present evidence for an equally important role of KLF4 in maintaining the integrity of the G2/M checkpoint following DNA damage. HCT116, a colon cancer cell line with wild type p53 alleles, underwent sustained G2 arrest up to 4 days after gamma-irradiation. In contrast, HCT116 cells null for p53 were able to enter mitosis following irradiation. Western blot analyses of irradiated HCT116 cells showed increased levels of p53, KLF4, and p21WAF1/CIP1 and decreased levels of cyclin B1 when compared with unirradiated controls. In contrast, the levels of cyclin B1 increased in irradiated HCT116 p53-/- cells, in which KLF4 failed to increase due to the absence of p53." provenance.
- _5 wasQuotedFrom 14627709 provenance.