Carbachol dimers with primary carbamate groups as homobivalent modulators of muscarinic receptors
作者:Rosanna Matucci、Cristina Bellucci、Maria Vittoria Martino、Marta Nesi、Dina Manetti、Jessica Welzel、Ulrike Bartz、Janine Holze、Christian Tränkle、Klaus Mohr、Angelica Mazzolari、Giulio Vistoli、Silvia Dei、Elisabetta Teodori、Maria Novella Romanelli
DOI:10.1016/j.ejphar.2020.173183
日期:2020.9
research, we designed a new series of dimers of the well-known cholinergic agonist carbachol. The new compounds were tested on the five cloned human muscarinic receptors (hM1–5) expressed in CHO cells by means of equilibrium binding experiments, showing a dependence of the binding affinity on the length and position of the linker connecting the two monomers. Kinetic binding studies revealed that some of
尽管毒蕈碱受体的激动剂和拮抗剂早已为人所知,但人们对能够区别和选择性调节这些受体的化合物(例如变构或双位配体或偏向激动剂)重新产生了兴趣。作为我们先前研究的延续,我们设计了一系列新的胆碱能激动剂卡巴胆碱二聚体。在五个克隆的人类毒蕈碱受体(hM 1-5通过平衡结合实验在CHO细胞中表达),显示结合亲和力对连接两个单体的接头的长度和位置的依赖性。动力学结合研究表明,某些测试的化合物能够减慢NMS的解离速率,暗示了变构行为,这也受到对接模拟的支持。对hM 1,hM 2和hM 3活化的ERK1 / 2磷酸化的评估表明,新化合物具有毒蕈碱拮抗剂特性。在hM 2受体处,某些化合物能够刺激GTPγS结合,但不能刺激cAMP积累,表明行为有偏差。 分类,分子和细胞药理学。