Development of a novel class of B-RafV600E-selective inhibitors through virtual screening and hierarchical hit optimizationElectronic supplementary information (ESI) available. See DOI: 10.1039/c2ob26081f
Oncogenic mutations in critical nodes of cellular signaling pathways have been associated with tumorigenesis and progression. The B-Raf protein kinase, a key hub in the canonical MAPK signaling cascade, is mutated in a broad range of human cancers and especially in malignant melanoma. The most preva...
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Main Authors | , , , , , , , , , , , , , , , , |
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Format | Journal Article |
Language | English |
Published |
22.08.2012
|
Online Access | Get full text |
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Summary: | Oncogenic mutations in critical nodes of cellular signaling pathways have been associated with tumorigenesis and progression. The B-Raf protein kinase, a key hub in the canonical MAPK signaling cascade, is mutated in a broad range of human cancers and especially in malignant melanoma. The most prevalent B-Raf
V600E
mutant exhibits elevated kinase activity and results in constitutive activation of the MAPK pathway, thus making it a promising drug target for cancer therapy. Herein, we describe the development of novel B-Raf
V600E
selective inhibitors
via
multi-step virtual screening and hierarchical hit optimization. Nine hit compounds with low micromolar IC
50
values were identified as B-Raf
V600E
inhibitors through virtual screening. Subsequent scaffold-based analogue searching and medicinal chemistry efforts significantly improved both the inhibitor potency and oncogene selectivity. In particular, compounds
22f
and
22q
possess nanomolar IC
50
values with selectivity for B-Raf
V600E
in vitro
and exclusive cytotoxicity against B-Raf
V600E
harboring cancer cells.
Identification of B-Raf
V600E
selective inhibitors. |
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Bibliography: | Electronic supplementary information (ESI) available. See DOI 10.1039/c2ob26081f |
ISSN: | 1477-0520 1477-0539 |
DOI: | 10.1039/c2ob26081f |