Novel histone deacetylase 8 ligands without a zinc chelating group: Exploring an ‘upside-down’ binding pose
作者:Aditya Sudheer Vaidya、Raghupathi Neelarapu、Antonett Madriaga、He Bai、Emma Mendonca、Hazem Abdelkarim、Richard B. van Breemen、Sylvie Y. Blond、Pavel A. Petukhov
DOI:10.1016/j.bmcl.2012.08.104
日期:2012.11
a zinc-chelating hydroxamic acid moiety is reported. Photoaffinity labeling and molecular modeling studies suggest that these ligands are likely to bind in an ‘upside-down’ fashion in a secondary binding site proximal to the main catalytic site. The most potent ligand in the series exhibits an IC50 of 28 μM for HDAC8 and is found to inhibit the deacetylation of H4 but not α-tubulin in SH-SY5Y cell
报道了一系列没有锌螯合异羟肟酸部分的新型 HDAC8 抑制剂。光亲和标记和分子建模研究表明,这些配体可能以“倒置”方式结合在靠近主要催化位点的次级结合位点。该系列中最有效的配体对 HDAC8的 IC 50为 28 μM,并发现可抑制 SH-SY5Y 细胞系中 H4 的脱乙酰化,但不抑制 α-微管蛋白的脱乙酰化。