K-Ras(G12D) Has a Potential Allosteric Small Molecule Binding Site.
K-Ras(G12D) Has a Potential Allosteric Small Molecule Binding Site.
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DOI:
10.1021/acs.biochem.8b01300
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发表时间:
2019-05-28
期刊:
影响因子:
2.9
通讯作者:
Stockwell BR
中科院分区:
文献类型:
--
作者:
Feng H;Zhang Y;Bos PH;Chambers JM;Dupont MM;Stockwell BR
KRAS is the most commonly mutated oncogene in human cancer, with particularly high mutation frequencies in pancreatic cancers, colorectal cancers and lung cancers. The high prevalence of KRAS mutations and its essential role in many cancers makes it a potentially attractive drug target; however, it has been difficult to create small molecule inhibitors of mutant K-Ras proteins. Here, we identified a small molecule binding site on K-RasG12D using computational analyses of the protein structure, and then used a combination of computational and biochemical approaches to discover small molecules that bind to this pocket, which we have termed the P110 site, due to its adjacency to proline-110. We determined that one compound, named K-Ras Allosteric Ligand KAL-21404358, bound to K-RasG12D, as measured by microscale thermophoresis (MST), thermal shift assay (TSA), and nuclear magnetic resonance (NMR) spectroscopy. This compound impaired the K-RasG12D interaction with B-Raf, and disrupted the RAF-MEK-ERK and the PI3K-AKT signaling pathway. We synthesized additional compounds, based on the KAL-21404358 scaffold with more potent binding and greater aqueous solubility. In summary, these findings suggest that the P110 site is a promising pocket for binding of small molecule allosteric inhibitors of K-RasG12D.
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影响因子:
15
作者:
Abel, Robert;Young, Tom;Friesner, Richard A.
通讯作者:
Friesner, Richard A.
影响因子:
5.6
作者:
Halgren, Thomas A.
通讯作者:
Halgren, Thomas A.
DOI:
10.1038/nrc3106
发表时间:
2011-10-13
期刊:
Nature reviews. Cancer
影响因子:
--
作者:
通讯作者:
--
影响因子:
2.9
作者:
Geyer, M;Schweins, T;Kalbitzer, HR
通讯作者:
Kalbitzer, HR
DOI:
10.1073/pnas.1315798111
发表时间:
2014-03-04
影响因子:
11.1
作者:
Burns, Michael C.;Sun, Qi;Fesik, Stephen W.
通讯作者:
Fesik, Stephen W.