Department of Molecular Genetics, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
Cell Res. 2011 Mar;21(3):375-80. doi: 10.1038/cr.2010.174. Epub 2010 Dec 14.
p53, NFκB, STAT3, and several other transcription factors are reversibly methylated on lysine residues by enzymes that also modify histones. The methylations of NFκB and STAT3 take place when they are bound to promoters, suggesting a more general model in which the binding of inducible transcription factors to DNA helps to recruit chromatin-modification machinery, which then may modify not only histones but also the bound transcription factors. Mutations of some histone-lysine methyltransferases and demethylases are linked to cancer, and these mutations may alter the methylation not only of histones but also of transcription factors, and thus may be tumorigenic through more than one mechanism.
p53、NFκB、STAT3 和其他一些转录因子可被可逆地赖氨酸甲基化,该过程由修饰组蛋白的酶来完成。NFκB 和 STAT3 的甲基化发生在它们与启动子结合时,这表明了一个更普遍的模型,即诱导型转录因子与 DNA 的结合有助于募集染色质修饰机制,该机制随后不仅可以修饰组蛋白,还可以修饰结合的转录因子。一些组蛋白赖氨酸甲基转移酶和去甲基酶的突变与癌症有关,这些突变不仅可能改变组蛋白的甲基化,还可能改变转录因子的甲基化,因此可能通过不止一种机制致癌。