Structure-Based Ligand Discovery Targeting the Transmembrane Domain of Frizzled Receptor FZD7
作者:Cuixia Li、Yiran Wu、Wenli Wang、Lu Xu、Yan Zhou、Yang Yue、Tingting Wu、Meifang Yang、Yanli Qiu、Minhao Huang、Fangfang Zhou、Yiqing Zhou、Piliang Hao、Zhixiong Lin、Ming-Wei Wang、Suwen Zhao、Dehua Yang、Fei Xu、Houchao Tao
DOI:10.1021/acs.jmedchem.2c01795
日期:2023.9.14
tissue homeostasis, ligands targeting FZDs are rare. A few antibodies and peptide modulators have been developed that mainly bind to the family-conserved extracellular cysteine-rich domain of FZDs, while the canonical binding sites in the transmembrane domain (TMD) are far from sufficiently addressed. Based on the recent structures of FZDs, we explored small-molecule ligand discovery by targeting TMD
尽管卷曲受体 (FZD) 在介导胚胎发育和组织稳态中 Wnt 信号传导方面发挥着重要作用,但针对 FZD 的配体却很少。已经开发出一些抗体和肽调节剂,主要与 FZD 家族保守的胞外富含半胱氨酸结构域结合,而跨膜结构域 (TMD) 中的典型结合位点还远远没有得到充分解决。基于FZDs的最新结构,我们探索了靶向TMD的小分子配体发现。从包含约 160 万种化合物的 ChemDiv 文库中,我们鉴定出化合物 F7H 是 FZD7 的拮抗剂,其 IC 50为 1.25 ± 0.38 μM。围绕这一成果,结构解剖研究与分子对接、分子动力学模拟和自由能微扰计算等计算研究一起,定义了具有关键残基识别的结合口袋。我们的结果揭示了配体识别的结构基础,并证明了 FZD7-TMD 结构引导配体发现的可行性。