Nitric Oxide-Mediated Histone Hyperacetylation in Oral Cancer: Target for a Water-Soluble HAT Inhibitor, CTK7A

被引:101
作者
Arif, Mohammed [1 ]
Vedamurthy, Bhusainahalli M. [1 ]
Choudhari, Ramesh [1 ]
Ostwal, Yogesh B. [1 ]
Mantelingu, Kempegowda [1 ]
Kodaganur, Gopinath S. [2 ]
Kundu, Tapas K. [1 ]
机构
[1] JNCASR, Mol Biol & Genet Unit, Transcript & Dis Lab, Bangalore 560064, Karnataka, India
[2] Bangalore Inst Oncol, Bangalore 560027, Karnataka, India
来源
CHEMISTRY & BIOLOGY | 2010年 / 17卷 / 08期
关键词
GENE-EXPRESSION; ACETYLTRANSFERASE; CHROMATIN; P300; ACETYLATION; CURCUMIN; PROGRESSION; CBP/P300; PHOSPHORYLATION; NUCLEOPHOSMIN;
D O I
10.1016/j.chembiol.2010.06.014
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Altered histone acetylation is associated with several diseases, including cancer. We report here that, unlike in most cancers, histones are found to be highly hyperacetylated in oral squamous cell carcinoma (OSCC; oral cancer) patient samples. Mechanistically, overexpression, as well as enhanced autoacetylation, of p300 induced by nucleophosmin (NPM1) and glyceraldehyde 3-phosphate dehydrogenase (GAPDH) causes the hyperacetylation, which is nitric oxide (NO) signal dependent. Inhibition of the histone acetyltransferase (HAT) activity of p300 by a water-soluble, small molecule inhibitor, Hydrazinocurcumin (CTK7A), substantially reduced the xenografted oral tumor growth in mice. These results, therefore, not only establish an epigenetic target for oral cancer, but also implicate a HAT inhibitor (HATi) as a potential therapeutic molecule.
引用
收藏
页码:903 / 913
页数:11
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