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McCarthy, Michael J; Pagba, Cynthia V; Prakash, Priyanka; Naji, Ali K; van der Hoeven, Dharini; Liang, Hong; Gupta, Amit K; Zhou, Yong; Cho, Kwang-Jin; Hancock, John F; Gorfe, Alemayehu A
ACS Omega, 2019-Feb-28, Letnik: 4, Številka: 2Journal Article
Approximately 15% of all human tumors harbor mutant KRAS, a membrane-associated small GTPase and notorious oncogene. Mutations that render KRAS constitutively active will lead to uncontrolled cell growth and cancer. However, despite aggressive efforts in recent years, there are no drugs on the market that directly target KRAS and inhibit its aberrant functions. In the current work, we combined structure-based design with a battery of cell and biophysical assays to discover a novel pyrazolopyrimidine-based allosteric KRAS inhibitor that binds to activated KRAS with sub-micromolar affinity and disrupts effector binding, thereby inhibiting KRAS signaling and cancer cell growth. These results show that pyrazolopyrimidine-based compounds may represent a first-in-class allosteric noncovalent inhibitors of KRAS. Moreover, by studying two of its analogues, we identified key chemical features of the compound that interact with a set of specific residues at the switch regions of KRAS and play critical roles for its high-affinity binding and unique mode of action, thus providing a blueprint for future optimization efforts.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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