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-Structure paper
タイトル | Structural insights into multiplexed pharmacological actions of tirzepatide and peptide 20 at the GIP, GLP-1 or glucagon receptors. |
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ジャーナル・号・ページ | Nat Commun, Vol. 13, Issue 1, Page 1057, Year 2022 |
掲載日 | 2022年2月25日 |
著者 | Fenghui Zhao / Qingtong Zhou / Zhaotong Cong / Kaini Hang / Xinyu Zou / Chao Zhang / Yan Chen / Antao Dai / Anyi Liang / Qianqian Ming / Mu Wang / Li-Nan Chen / Peiyu Xu / Rulve Chang / Wenbo Feng / Tian Xia / Yan Zhang / Beili Wu / Dehua Yang / Lihua Zhao / H Eric Xu / Ming-Wei Wang / |
PubMed 要旨 | Glucose homeostasis, regulated by glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide-1 (GLP-1) and glucagon (GCG) is critical to human health. Several multi-targeting agonists ...Glucose homeostasis, regulated by glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide-1 (GLP-1) and glucagon (GCG) is critical to human health. Several multi-targeting agonists at GIPR, GLP-1R or GCGR, developed to maximize metabolic benefits with reduced side-effects, are in clinical trials to treat type 2 diabetes and obesity. To elucidate the molecular mechanisms by which tirzepatide, a GIPR/GLP-1R dual agonist, and peptide 20, a GIPR/GLP-1R/GCGR triagonist, manifest their multiplexed pharmacological actions over monoagonists such as semaglutide, we determine cryo-electron microscopy structures of tirzepatide-bound GIPR and GLP-1R as well as peptide 20-bound GIPR, GLP-1R and GCGR. The structures reveal both common and unique features for the dual and triple agonism by illustrating key interactions of clinical relevance at the near-atomic level. Retention of glucagon function is required to achieve such an advantage over GLP-1 monotherapy. Our findings provide valuable insights into the structural basis of functional versatility of tirzepatide and peptide 20. |
リンク | Nat Commun / PubMed:35217653 / PubMed Central |
手法 | EM (単粒子) |
解像度 | 3.0 - 3.5 Å |
構造データ | EMDB-31603, PDB-7fim: EMDB-31604, PDB-7fin: EMDB-31606, PDB-7fiy: EMDB-31676, PDB-7v35: EMDB-31836, PDB-7vab: EMDB-31879, PDB-7vbh: EMDB-31880, PDB-7vbi: |
化合物 | ChemComp-CLR: ChemComp-GGL: ChemComp-D6M: |
由来 |
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キーワード | STRUCTURAL PROTEIN / Cryo-electron microscopy; G protein-coupled receptor; ligand recognition; receptor activation; unimolecular agonist |