Hüsün S. Kizilkaya, Kimmie V. Sørensen, Jakob S. Madsen, Peter Lindquist, Jonathan D. Douros, Jette Bork-Jensen, Alessandro Berghella, Peter A. Gerlach, Lærke S. Gasbjerg, Jacek Mokrosiński, Stephanie A. Mowery, Patrick J. Knerr, Brian Finan, Jonathan E. Campbell, David A. D’Alessio, Diego Perez-Tilve, Felix Faas, Signe Mathiasen, Jørgen Rungby, Henrik T. Sørensen, Allan Vaag, Jens S. Nielsen, Jens-Christian Holm, Jeannet Lauenborg, Peter Damm, Oluf Pedersen, Allan Linneberg, Bolette Hartmann, Jens J. Holst, Torben Hansen, Shane C. Wright, Volker M. Lauschke, Niels Grarup, Alexander S. Hauser, Mette M. Rosenkilde
{"title":"GIPR 遗传变异的特征揭示了 β-arrestin 对代谢表型的贡献","authors":"Hüsün S. Kizilkaya, Kimmie V. Sørensen, Jakob S. Madsen, Peter Lindquist, Jonathan D. Douros, Jette Bork-Jensen, Alessandro Berghella, Peter A. Gerlach, Lærke S. Gasbjerg, Jacek Mokrosiński, Stephanie A. Mowery, Patrick J. Knerr, Brian Finan, Jonathan E. Campbell, David A. D’Alessio, Diego Perez-Tilve, Felix Faas, Signe Mathiasen, Jørgen Rungby, Henrik T. Sørensen, Allan Vaag, Jens S. Nielsen, Jens-Christian Holm, Jeannet Lauenborg, Peter Damm, Oluf Pedersen, Allan Linneberg, Bolette Hartmann, Jens J. Holst, Torben Hansen, Shane C. Wright, Volker M. Lauschke, Niels Grarup, Alexander S. Hauser, Mette M. Rosenkilde","doi":"10.1038/s42255-024-01061-4","DOIUrl":null,"url":null,"abstract":"Incretin-based therapies are highly successful in combatting obesity and type 2 diabetes1. Yet both activation and inhibition of the glucose-dependent insulinotropic polypeptide (GIP) receptor (GIPR) in combination with glucagon-like peptide-1 (GLP-1) receptor (GLP-1R) activation have resulted in similar clinical outcomes, as demonstrated by the GIPR–GLP-1R co-agonist tirzepatide2 and AMG-133 (ref. 3) combining GIPR antagonism with GLP-1R agonism. This underlines the importance of a better understanding of the GIP system. Here we show the necessity of β-arrestin recruitment for GIPR function, by combining in vitro pharmacological characterization of 47 GIPR variants with burden testing of clinical phenotypes and in vivo studies. Burden testing of variants with distinct ligand-binding capacity, Gs activation (cyclic adenosine monophosphate production) and β-arrestin 2 recruitment and internalization shows that unlike variants solely impaired in Gs signalling, variants impaired in both Gs and β-arrestin 2 recruitment contribute to lower adiposity-related traits. Endosomal Gs-mediated signalling of the variants shows a β-arrestin dependency and genetic ablation of β-arrestin 2 impairs cyclic adenosine monophosphate production and decreases GIP efficacy on glucose control in male mice. This study highlights a crucial impact of β-arrestins in regulating GIPR signalling and overall preservation of biological activity that may facilitate new developments in therapeutic targeting of the GIPR system. Molecular pharmacological characterization and association testing of human GIPR genetic variants with follow-up analysis in mice shows that β-arrestins regulate GIPR signalling and thereby strongly contribute to metabolic outcomes.","PeriodicalId":19038,"journal":{"name":"Nature metabolism","volume":null,"pages":null},"PeriodicalIF":18.9000,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s42255-024-01061-4.pdf","citationCount":"0","resultStr":"{\"title\":\"Characterization of genetic variants of GIPR reveals a contribution of β-arrestin to metabolic phenotypes\",\"authors\":\"Hüsün S. Kizilkaya, Kimmie V. Sørensen, Jakob S. Madsen, Peter Lindquist, Jonathan D. Douros, Jette Bork-Jensen, Alessandro Berghella, Peter A. Gerlach, Lærke S. Gasbjerg, Jacek Mokrosiński, Stephanie A. Mowery, Patrick J. Knerr, Brian Finan, Jonathan E. Campbell, David A. D’Alessio, Diego Perez-Tilve, Felix Faas, Signe Mathiasen, Jørgen Rungby, Henrik T. Sørensen, Allan Vaag, Jens S. Nielsen, Jens-Christian Holm, Jeannet Lauenborg, Peter Damm, Oluf Pedersen, Allan Linneberg, Bolette Hartmann, Jens J. Holst, Torben Hansen, Shane C. Wright, Volker M. Lauschke, Niels Grarup, Alexander S. Hauser, Mette M. Rosenkilde\",\"doi\":\"10.1038/s42255-024-01061-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Incretin-based therapies are highly successful in combatting obesity and type 2 diabetes1. Yet both activation and inhibition of the glucose-dependent insulinotropic polypeptide (GIP) receptor (GIPR) in combination with glucagon-like peptide-1 (GLP-1) receptor (GLP-1R) activation have resulted in similar clinical outcomes, as demonstrated by the GIPR–GLP-1R co-agonist tirzepatide2 and AMG-133 (ref. 3) combining GIPR antagonism with GLP-1R agonism. This underlines the importance of a better understanding of the GIP system. Here we show the necessity of β-arrestin recruitment for GIPR function, by combining in vitro pharmacological characterization of 47 GIPR variants with burden testing of clinical phenotypes and in vivo studies. Burden testing of variants with distinct ligand-binding capacity, Gs activation (cyclic adenosine monophosphate production) and β-arrestin 2 recruitment and internalization shows that unlike variants solely impaired in Gs signalling, variants impaired in both Gs and β-arrestin 2 recruitment contribute to lower adiposity-related traits. Endosomal Gs-mediated signalling of the variants shows a β-arrestin dependency and genetic ablation of β-arrestin 2 impairs cyclic adenosine monophosphate production and decreases GIP efficacy on glucose control in male mice. This study highlights a crucial impact of β-arrestins in regulating GIPR signalling and overall preservation of biological activity that may facilitate new developments in therapeutic targeting of the GIPR system. 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Characterization of genetic variants of GIPR reveals a contribution of β-arrestin to metabolic phenotypes
Incretin-based therapies are highly successful in combatting obesity and type 2 diabetes1. Yet both activation and inhibition of the glucose-dependent insulinotropic polypeptide (GIP) receptor (GIPR) in combination with glucagon-like peptide-1 (GLP-1) receptor (GLP-1R) activation have resulted in similar clinical outcomes, as demonstrated by the GIPR–GLP-1R co-agonist tirzepatide2 and AMG-133 (ref. 3) combining GIPR antagonism with GLP-1R agonism. This underlines the importance of a better understanding of the GIP system. Here we show the necessity of β-arrestin recruitment for GIPR function, by combining in vitro pharmacological characterization of 47 GIPR variants with burden testing of clinical phenotypes and in vivo studies. Burden testing of variants with distinct ligand-binding capacity, Gs activation (cyclic adenosine monophosphate production) and β-arrestin 2 recruitment and internalization shows that unlike variants solely impaired in Gs signalling, variants impaired in both Gs and β-arrestin 2 recruitment contribute to lower adiposity-related traits. Endosomal Gs-mediated signalling of the variants shows a β-arrestin dependency and genetic ablation of β-arrestin 2 impairs cyclic adenosine monophosphate production and decreases GIP efficacy on glucose control in male mice. This study highlights a crucial impact of β-arrestins in regulating GIPR signalling and overall preservation of biological activity that may facilitate new developments in therapeutic targeting of the GIPR system. Molecular pharmacological characterization and association testing of human GIPR genetic variants with follow-up analysis in mice shows that β-arrestins regulate GIPR signalling and thereby strongly contribute to metabolic outcomes.
期刊介绍:
Nature Metabolism is a peer-reviewed scientific journal that covers a broad range of topics in metabolism research. It aims to advance the understanding of metabolic and homeostatic processes at a cellular and physiological level. The journal publishes research from various fields, including fundamental cell biology, basic biomedical and translational research, and integrative physiology. It focuses on how cellular metabolism affects cellular function, the physiology and homeostasis of organs and tissues, and the regulation of organismal energy homeostasis. It also investigates the molecular pathophysiology of metabolic diseases such as diabetes and obesity, as well as their treatment. Nature Metabolism follows the standards of other Nature-branded journals, with a dedicated team of professional editors, rigorous peer-review process, high standards of copy-editing and production, swift publication, and editorial independence. The journal has a high impact factor, has a certain influence in the international area, and is deeply concerned and cited by the majority of scholars.