Sirtuin 6 (SIRT6) is an NAD+-dependent deacetylase regulating important functions: modulators of its enzymatic activity have been considered as possible therapeutic agents. Besides the deacetylase activity, SIRT6 also has NAD+-dependent deacylase activity, whereby it regulates the secretion of cytokines and proteins. We identified novel SIRT6 modulators with a lysine-based structure: compound 1 enhances SIRT6 deacylase while inhibiting the deacetylase activity. As expected based on the biological effects of SIRT6 deacetylase activity, compound 1 increased histone 3 lysine 9 acetylation and the activity of glycolytic enzymes. Moreover, the fact that compound 1 enhanced SIRT6 deacylase activity was accompanied by an increased TNF-α release. In conclusion, new SIRT6 modulators with a lysine-like structure were identified, with differential effects on specific SIRT6 activities. The novel SIRT6 modulator concomitantly inhibits deacetylase and enhances deacylase activity.
Sirtuin 6(SIRT6)是一种依赖于
NAD+ 的
去乙酰化酶,具有重要的调节功能:其酶活性调节剂已被视为可能的治疗药物。除了
去乙酰化酶活性外,SIRT6 还具有
NAD+ 依赖性去酰化酶活性,从而调节细胞因子和蛋白质的分泌。我们发现了具有赖
氨酸结构的新型 SIRT6 调节剂:化合物 1 在抑制脱乙酰化酶活性的同时,还能增强 SIRT6 的脱乙酰化酶活性。正如基于 SIRT6
去乙酰化酶活性的
生物学效应所预期的那样,化合物 1 增加了组蛋白 3 赖
氨酸 9 乙酰化和糖酵解酶的活性。此外,化合物 1 在增强 SIRT6 脱乙酰酶活性的同时还增加了 TNF-α 的释放。总之,我们发现了具有类似赖
氨酸结构的新型 SIRT6 调节剂,它们对特定的 SIRT6 活性具有不同的影响。新型 SIRT6 调节剂可同时抑制
去乙酰化酶和增强
去乙酰化酶的活性。