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Published on: March 17, 2023
Structural basis for the agonist action at free fatty acid receptor 1 (FFA1R or GPR40)
Daniel Alencar Rodrigues1,2, Pedro de Sena Murteira Pinheiro1,3, Thayssa Tavares da Silva Cunha Ferreira1,3
1Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
Abstract:
G-protein-coupled receptor 40 (GPR40) was recently identified as an interesting target for treatment of type 2 diabetes. The high level of expression in pancreatic beta cells and the dependence of glucose on stimulating the secretion of insulin led to great excitement in this field. The identification of this target was followed by the development of a series of agonists with great potential for the treatment of diabetes. All known agonists have the presence of a pharmacophoric carboxylic acid group in their structure, which makes several polar interactions at the binding site of this receptor. In this report, we provide a review of the structure-activity relationships of GPR40 agonists with a focus on the main strategies of medicinal chemistry used to develop each one of the main structural patterns exploited for this purpose. Additionally, we provide a general model for the design of GPR40 ligands that can help researchers to follow up some strategies and implement them in the development of novel agonists of this receptor.
Insights
G-protein-coupled receptor 40 (GPR40) agonists show promise for type 2 diabetes treatment. This review details structure-activity relationships and medicinal chemistry strategies for developing novel GPR40 ligands.
Area of Science:
- Medicinal Chemistry
- Endocrinology
- Pharmacology
Background:
- G-protein-coupled receptor 40 (GPR40) is a key target for type 2 diabetes due to its role in insulin secretion from pancreatic beta cells.
- Glucose stimulation of insulin secretion is dependent on GPR40 activity, making it a significant focus for therapeutic development.
Purpose of the Study:
- To review the structure-activity relationships (SAR) of GPR40 agonists.
- To highlight medicinal chemistry strategies employed in developing GPR40 agonist structural classes.
- To present a general model for designing novel GPR40 ligands.
Main Methods:
- Literature review of GPR40 agonist research.
- Analysis of SAR data for various GPR40 agonist scaffolds.
- Identification of common pharmacophoric features, such as the carboxylic acid group.
Main Results:
- GPR40 agonists often feature a carboxylic acid group crucial for polar interactions within the receptor binding site.
- Diverse structural patterns have been explored, each with specific SAR profiles.
- Medicinal chemistry efforts have yielded several promising GPR40 agonist candidates.
Conclusions:
- Understanding SAR is critical for optimizing GPR40 agonists.
- The identified medicinal chemistry strategies and design model can guide the development of new type 2 diabetes therapies.
- Further research into GPR40 modulation holds potential for improved diabetes management.
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