Cell-based assays and molecular dynamics analysis of a boron-containing agonist with different profiles of binding to human and guinea pig beta2 adrenoceptors.

Cell-based assays and molecular dynamics analysis of a boron-containing agonist with different profiles of binding to human and guinea pig beta2 adrenoceptors. Eur Biophys J. 2018 Nov 01;: Authors: Soriano-Ursúa MA, Bello M, Hernández-Martínez CF, Santillán-Torres I, Guerrero-Ramírez R, Correa-Basurto J, Arias-Montaño JA, Trujillo-Ferrara JG Abstract The design of beta2 adrenoceptor (β2AR) agonists is attractive because of their wide-ranging applications in medicine, and the details of agonist interactions with β2AR are interesting because it is considered a prototype for G-protein coupled receptors. Preclinical studies for agonist development have involved biological assays with guinea pigs due to a similar physiology to humans. Boron-containing Albuterol derivatives (BCADs) designed as bronchodilators have improved potency and efficacy compared with their boron-free precursor on guinea pig β2ARs (gpβ2ARs), and two of the BCADs (BR-AEA and boronterol) conserve these features on cells expressing human β2ARs (hβ2ARs). The aim of this study was to test the BCAD Politerol on gpβ2ARs and hβ2ARs in vitro and in silico. Politerol displayed higher potency and efficacy on gpβ2AR than on hβ2AR in experimental assays, possible explanations are provided based on molecular modeling, and molecular dynamics simulations of about 0.25 µs were performed for the free and bound states adding up to 2 µs in total. There were slight di...
Source: European Biophysics Journal : EBJ - Category: Physics Authors: Tags: Eur Biophys J Source Type: research