Highly Potent and Selective Dopamine D<sub>4</sub> Receptor Antagonists Potentially Useful for the Treatment of Glioblastoma
作者:Pegi Pavletić、Ana Semeano、Hideaki Yano、Alessandro Bonifazi、Gianfabio Giorgioni、Alessandro Piergentili、Wilma Quaglia、Maria Giovanna Sabbieti、Dimitrios Agas、Giorgio Santoni、Roberto Pallini、Lucia Ricci-Vitiani、Emanuela Sabato、Giulio Vistoli、Fabio Del Bello
DOI:10.1021/acs.jmedchem.2c00840
日期:2022.9.22
understand the role of dopamine D4 receptor (D4R) in glioblastoma (GBM), in the present paper, new ligands endowed with high affinity and selectivity for D4R were discovered starting from the brain penetrant and D4R selective lead compound 1-(3-(4-phenylpiperazin-1-yl)propyl)-3,4-dihydroquinolin-2(1H)-one (6). In particular, the D4R antagonist 24, showing the highest affinity and selectivity over D2R and D3R
为了更好地了解多巴胺D 4受体(D 4 R)在胶质母细胞瘤(GBM)中的作用,本文从脑渗透剂和D 4 R选择性入手,发现了对D 4 R具有高亲和力和选择性的新配体。先导化合物1-(3-(4-苯基哌嗪-1-基)丙基)-3,4-二氢喹啉-2(1 H )-一( 6 )。特别是,D 4 R 拮抗剂24在系列中表现出比 D 2 R 和 D 3 R最高的亲和力和选择性(D 2 /D 4 = 8318,D 3 /D 4= 3715),偏向配体29,部分激活 D 4 R G i -/G o -蛋白并阻断 β-抑制蛋白募集,成为最有趣的化合物。这些化合物经过评估其 GBM 抗肿瘤活性,诱导 GBM 细胞系和原代 GBM 干细胞 (GSC#83) 的活力降低,在 10 μM 浓度下达到最大功效。有趣的是,与替莫唑胺(GBM 中的首选化疗药物)相比,使用化合物24和29的治疗诱导了降低细胞活力的增强作用。