Biological Activity
KU-0060648 is a very potent dual inhibitor of DNA-PK and PI3K. The IC50 values for inhibition of DNA-PK in MCF7 and SW620 cells are 19 and 170 nM, respectively. The compound KU-0060648 inhibits MCF7 PI3K activity with an IC50 of 39 nM, but is inactive against PI3K in SW620, suggesting a cell-dependent mechanism of inhibition. KU-0060648 increases sensitivity to DNA damaging cytotoxic drugs such as etoposide and doxorubicin in tumor cell lines expressing DNA-PK. KU-0060648 stimulates Cas9 (CRISPR associated protein 9) mediated genome editing by enhancing the rate of homology directed-repair (HDR) and decreasing the rate of NHEJ (non-homologous end-joining).', 'KU-0060648 is observed to inhibit proliferation and initiate apoptosis in hepatocellular carcinoma. KU-0060648 is useful in chemotherapy as it increases the efficiency of double stranded breaks initiated by anticancer drugs.
