Ligand-Based Discovery of a New Scaffold for Allosteric Modulation of the μ-Opioid Receptor

Paola Bisignano, Neil T Burford, Yi Shang, Brennica Marlow, Kathryn E Livingston, Abigail M Fenton, Kristin Rockwell, Lauren Budenholzer, John R Traynor, Samuel W Gerritz, Andrew Alt, Marta Filizola

J Chem Inf Model. 2015 Sep 28;55(9):1836-43.

PMID: 26347990

Abstract:

With the hope of discovering effective analgesics with fewer side effects, attention has recently shifted to allosteric modulators of the opioid receptors. In the past two years, the first chemotypes of positive or silent allosteric modulators (PAMs or SAMs, respectively) of μ- and δ-opioid receptor types have been reported in the literature. During a structure-guided lead optimization campaign with μ-PAMs BMS-986121 and BMS-986122 as starting compounds, we discovered a new chemotype that was confirmed to display μ-PAM or μ-SAM activity depending on the specific substitutions as assessed by endomorphin-1-stimulated β-arrestin2 recruitment assays in Chinese Hamster Ovary (CHO)-μ PathHunter cells. The most active μ-PAM of this series was analyzed further in competition binding and G-protein activation assays to understand its effects on ligand binding and to investigate the nature of its probe dependence.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP313669884	BMS-986122		313669-88-4	Price