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- W1983452202 abstract "Epidermal growth factor receptor (EGFR) amplification has been demonstrated to be critical for the inherent and/or acquired resistance against current B-RafV600E inhibitor therapy for melanoma and colorectal cancer patients. We describe the discovery and structure–activity relationship study of a series of 1H-pyrazolo[3,4-b]pyridine-5-carboxamide analogues as novel dual inhibitors of EGFR and B-RafV600E mutant. One of the most promising compounds, 6a, potently inhibited both of the kinases with IC50 values of 8.0 and 51 nM, respectively. The compound also strongly suppressed the proliferation of a panel of intrinsic and acquired resistant melanoma and/or colorectal cancer cells harboring overexpressed EGFR with submicromolar IC50 values. Further mechanism investigation revealed that 6a could sustainably inhibit the activation of the MAPK path way in the resistant SK-MEL-28 PR30 melanoma cancer cells and WiDr colorectal cancer cells with EGFR amplification. Our results support the hypothesis that the EGFR/B-RafV600E dual inhibition might be a tractable strategy to overcome the intrinsic and acquired resistance of melanoma and/or colorectal cancers against the current B-RafV600E inhibitor therapy." @default.
- W1983452202 created "2016-06-24" @default.
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- W1983452202 date "2014-03-18" @default.
- W1983452202 modified "2023-09-27" @default.
- W1983452202 title "Identification and Optimization of New Dual Inhibitors of B-Raf and Epidermal Growth Factor Receptor Kinases for Overcoming Resistance against Vemurafenib" @default.
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- W1983452202 doi "https://doi.org/10.1021/jm500007h" @default.
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