Inhibition of PCAF histone acetyltransferase and cytotoxic effect of N-acylanthranilic acids
作者:Woong Jae Park、Eunsook Ma
DOI:10.1007/s12272-012-0807-2
日期:2012.8
Small molecule HAT inhibitors are useful tools to unravel the role of histone acetyltransferases (HATs) in the cell and have relevance for oncology. We synthesized a series of N-acylanthranilic acids (11–16) and of N-acyl-5-hydroxyanthranilic acids (17–22) bearing C6, C8, C10, C12, C14, along with C16 acyl chain at the 2-amino position of anthranilic acid or 5-hydroxyanthranilic acid. Enzyme inhibition of these compounds was investigated, using in vitro PCAF HAT assays. All synthesized compounds (65–76%) showed similar inhibitory activity to anacardic acid (68%) at 100 μM. The cytotoxicity, against one normal cell line (HSF) and eight cancer cell lines (HT-29, HCT-116, MDA-231, A-549, Hep3B, Caski, HeLa and Caki), were evaluated by the SRB method.
小分子HAT抑制剂是揭示组蛋白乙酰转移酶(HAT)在细胞中作用的重要工具,并且与肿瘤学有关。我们合成了一系列N-酰基苯氨酸(11–16)和N-酰基-5-羟基苯氨酸(17–22),这些化合物在苯氨酸或5-羟基苯氨酸的2-氨基位点上具有C6、C8、C10、C12、C14以及C16的酰基链。通过体外PCAF HAT实验研究了这些化合物的酶抑制活性。所有合成的化合物在100μM浓度下表现出的抑制活性(65–76%)与开心果酸(68%)相似。使用SRB法评估了这些化合物对一条正常细胞系(HSF)和八条癌细胞系(HT-29、HCT-116、MDA-231、A-549、Hep3B、Caski、HeLa和Caki)的细胞毒性。