Modulation of αvβ3- and α5β1-integrin-mediated adhesion by dehydro-β-amino acids containing peptidomimetics
作者:Alessandra Tolomelli、Monica Baiula、Laura Belvisi、Angelo Viola、Luca Gentilucci、Stefano Troisi、Samantha Deianira Dattoli、Santi Spampinato、Monica Civera、Eusebio Juaristi、Margarita Escudero
DOI:10.1016/j.ejmech.2013.05.050
日期:2013.8
A novel class of low molecular weight ligands of alpha(v)beta(3) and alpha(5)beta(1) integrins, that possess a dehydro-beta-amino acid as conformationally constrained core, linked to the pharmacophoric moieties mimicking the RGD recognition sequence, have been synthesized through a very simple protocol. Cell adhesion assays and integrin-mediated signaling activation experiments suggested a good affinity of these compounds toward both integrin receptors. Moreover, further elongation with two glycine units allowed to obtain an excellent dual inhibitor. Structural models for alpha(v)beta(3) integrin-ligand binding confirmed that the dehydro-beta-amino derivatives are able to act as an electrostatic clamp by establishing several stabilizing interactions with the receptor. (C) 2013 Elsevier Masson SAS. All rights reserved.