ArticleMolecules (Basel, Switzerland)2026
Rational Design and Evaluation of Novel TGR5 Agonists for Diabetes.
Article in Molecules (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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10 authors.
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Abstract
Agonists of the G protein-coupled receptor TGR5 have long been sought-after for their metabolic benefits. Intestinal TGR5 activation induces secretion of the antidiabetic hormone GLP-1, which can systemically improve diabetes phenotypes in multiple organs. However, no TGR5 agonist drug candidate has succeeded in clinical trials due to their low potency and unwanted side effects. A challenge in the field has been the development of TGR5 agonists that are non-toxic, long-acting, and have functional selectivity for G protein-biased agonism. In this study, we propose a systematic pipeline for engineering optimal TGR5 agonists with antidiabetic properties. This pipeline is interdisciplinary, combining in silico, in vitro, and in vivo assays to design and validate drug candidates. We identify 2 lead compounds that outline the necessary beneficial properties for a successful TGR5 agonist against diabetes. We uncover the molecular mechanisms that allow TGR5 agonists to induce the transcription of their target, TGR5, in intestinal enteroendocrine cells. Lastly, we investigate the molecular interactions of our lead candidates in the TGR5 binding pocket to identify optimal parameters for stability and biological activity. Our strategy for TGR5 agonist design and evaluation has the potential to guide the discovery process for targeted TGR5 therapeutics for metabolic diseases.
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