An imbalanced GLP-1R/GIPR co-agonist peptide with a site-specific N-terminal PEGylation to maximize metabolic benefits
Glycemic and body weight control gained from GLP-1R agonists remains an unmet need for diabetes and obesity treatment, leading to the development of GLP-1R/GIPR co-agonists. An imbalance in GLP-1R/GIPR agonism may extensively maximize the glucose- and weight-lowering effects. Hence, we prepared a po...
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Veröffentlicht in: | iScience 2024-04, Vol.27 (4), p.109377-109377, Article 109377 |
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Sprache: | eng |
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Zusammenfassung: | Glycemic and body weight control gained from GLP-1R agonists remains an unmet need for diabetes and obesity treatment, leading to the development of GLP-1R/GIPR co-agonists. An imbalance in GLP-1R/GIPR agonism may extensively maximize the glucose- and weight-lowering effects. Hence, we prepared a potent and imbalanced GLP-1R/GIPR co-agonist, and refined its action time through a site-specific N-terminal PEGylation strategy. The pharmacological efficacy of these resulting long-acting co-agonists was interrogated both in vitro and in vivo. The results showed that peptide 1 possessed potent and imbalanced receptor-stimulating potency favoring GIP activity, but its hypoglycemic action was disrupted probably resulting from its short half-life. After PEGylation to improve the pharmacokinetics, the pharmacological effects were amplified compared to native peptide 1. Among the resulting derivatives, D-5K exhibited significant glycemic, HbA1c, body-weight, and food-intake control, outperforming GLP-1R mono-agonists. Based on its excellent pharmacological profiles, D-5K may hold the great therapeutic potential for diabetes and obesity treatment.
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•Peptide 1 is a potent and imbalanced GLP-1R/GIPR co-agonist•Action time of peptide 1 was refined through a site-specific N-terminal PEGylation•D-5K is a long-acting GLP-1R/GIPR co-agonist•D-5K exhibits improved metabolic benefits, outperforming GLP-1R mono-agonists
Pharmacology; Physiology; Cellular physiology |
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ISSN: | 2589-0042 2589-0042 |
DOI: | 10.1016/j.isci.2024.109377 |