Evaluation of biased agonism mediated by dual agonists of the GLP-1 and glucagon receptors

Biochemical Pharmacology
Sanaz DarbalaeiDenise Wootten

Abstract

Metabolic diseases such as obesity, diabetes, and their comorbidities have converged as one of the most serious health concerns on a global scale. Selective glucagon-like peptide-1 (GLP-1) receptor (GLP-1R) agonists are one of the major therapeutics for type 2 diabetes and obesity. Polypharmacological approaches that enable modulation of multiple metabolic targets in a single drug have emerged as a potential avenue to improve therapeutic outcomes. Among numerous peptides under development are those targeting the GLP-1R and either the glucagon receptor (GCGR), glucose-dependent insulinotropic peptide receptor (GIPR) or all 3 receptors, as dual- or tri- peptide agonists. Despite many of them entering into clinical trials, current development has been based on only a limited understanding of the spectrum of potential pharmacological properties of these ligands beyond binding selectivity. In the present study, we examined the potential for agonists that target both GLP-1R and GCGR to exhibit biased agonism, comparing activity across proximal activation of Gs protein, cAMP accumulation, pERK1/2 and β-arrestin recruitment. Three distinct dual agonists that have different relative cAMP production potency for GLP-1R versus GCGR, "pepti...Continue Reading

Citations

Apr 22, 2021·British Journal of Pharmacology·Ben Jones
Jun 1, 2021·Frontiers in Endocrinology·Seunghun P LeeAlessandro Pocai

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