LXXLL peptide mimetics as inhibitors of the interaction of vitamin D receptor with coactivators
作者:Yusuke Mita、Kosuke Dodo、Tomomi Noguchi-Yachide、Hiroyuki Miyachi、Makoto Makishima、Yuichi Hashimoto、Minoru Ishikawa
DOI:10.1016/j.bmcl.2010.01.079
日期:2010.3
LXXLL-containing peptide fragment of the coactivator (where L is leucine and X is any amino acid), which adopts a partially α-helical conformation, benzodiazepine molecules were rationally designed as non-peptide coactivator mimetics. TR-FRET assay showed that the synthesized compounds inhibited the interaction between VDR and a coactivator peptide fragment. Compound 2 showed an IC50 of 20 μM. Compound
抑制维生素D受体(VDR)介导的转录有望在Paget病中具有治疗价值。激动剂激活VDR后,募集其他共激活蛋白对于转录至关重要。迄今为止,尚未报道过非甾体类VDR拮抗剂或非肽类共激活剂结合抑制剂。根据VDR的X射线结构和含有LXXLL的共激活因子的肽片段(其中L为亮氨酸,X为任何氨基酸)采用部分α螺旋构象,将苯二氮卓分子合理地设计为非肽助活化剂模拟物。TR-FRET分析表明合成的化合物抑制VDR和共激活肽片段之间的相互作用。化合物2的IC 5020μM。化合物2也抑制VDR介导的转录,该活性与共存激动剂的浓度无关。此外,化合物2不抑制雌激素受体α介导的转录,表明它不是其他核受体的非选择性抑制剂。