Rare Streptomyces sp. polyketides as modulators of K-Ras localisation.
Rare Streptomyces sp. polyketides as modulators of K-Ras localisation.
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DOI:
10.1039/c4ob00745j
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发表时间:
2014-07-21
影响因子:
3.2
通讯作者:
Capon RJ
中科院分区:
文献类型:
--
作者:
Salim AA;Xiao X;Cho KJ;Piggott AM;Lacey E;Hancock JF;Capon RJ
Chemical investigations of a soil-derived Streptomyces sp. led to the isolation of five new polyketides, (+)-oxanthromicin, (±)-hemi-oxanthromicins A/B, (±)-spiro-oxanthromicin A and oxanthroquinone, and the known alkaloid staurosporine, and the detection of four new metastable analogues, (±)-spiro-oxanthromicins B1/B2/C1/C2. Among the compounds tested, SAR investigations established that the synthetic oxanthroquinone ethyl ester and 3-O-methyl-oxanthroquinone ethyl ester were optimal at mislocalising oncogenic mutant K-Ras from the plasma membrane of intact Madin-Darby canine kidney (MDCK) cells (IC50 4.6 and 1.2 μM), while a sub-EC50 dose of (±)-spiro-oxanthromicin A was optimal at potentiating (750%) the K-Ras inhibitory activity of staurosporine (IC50 60 pM). These studies demonstrate that a rare class of Streptomyces polyketide modulates K-Ras plasma membrane localisation, with implications for the future treatment of K-Ras dependent cancers.
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影响因子:
4.2
作者:
Baines AT;Xu D;Der CJ
通讯作者:
Der CJ
影响因子:
3.6
作者:
BOISVERT, L;BRASSARD, P
通讯作者:
BRASSARD, P
影响因子:
4.8
作者:
Cho, Kwang-jin;Park, Jin-Hee;Hancock, John F.
通讯作者:
Hancock, John F.
影响因子:
3.5
作者:
Lee, Taek Soon;Das, Abhirup;Khosla, Chaitan
通讯作者:
Khosla, Chaitan
影响因子:
3.6
作者:
BECKER, HD;SANCHEZ, D
通讯作者:
SANCHEZ, D