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Ward, B.P.* ; Ottaway, N.L.* ; Perez-Tilve, D.* ; Ma, D.* ; Gelfanov, V.M.* ; Tschöp, M.H. ; DiMarchi, R.D.*

Peptide lipidation stabilizes structure to enhance biological function.

Mol. Metab. 2, 468-479 (2013)
Verlagsversion Volltext DOI PMC
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Medicines that decrease body weight and restore nutrient tolerance could improve human diabetes and obesity treatment outcomes. We developed lipid-acylated glucagon analogs that are co-agonists for the glucagon and glucagon-like peptide 1 receptors, and stimulate weight loss and plasma glucose lowering in pre-diabetic obese mice. Our studies identified lipid acylation (lipidation) can increase and balance in vitro potencies of select glucagon analogs for the two aforementioned receptors in a lipidation site-dependent manner. A general capacity for lipidation to enhance the secondary structure of glucagon analogs was recognized, and the energetics of this effect quantified. The molecular structure of a lipid-acylated glucagon analog in water was also characterized. These results support that lipidation can modify biological activity through thermodynamically-favorable intramolecular interactions which stabilize structure. This establishes use of lipidation to achieve specific pharmacology and implicates similar endogenous post-translational modifications as physiological tools capable of refining biological action in means previously underappreciated.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Sprache englisch
Veröffentlichungsjahr 2013
HGF-Berichtsjahr 0
ISSN (print) / ISBN 2212-8778
e-ISSN 2212-8778
Zeitschrift Molecular Metabolism
Quellenangaben Band: 2, Heft: 4, Seiten: 468-479 Artikelnummer: , Supplement: ,
Verlag Elsevier
Verlagsort Amsterdam
Begutachtungsstatus Peer reviewed
POF Topic(s) 30201 - Metabolic Health
Forschungsfeld(er) Helmholtz Diabetes Center
PSP-Element(e) G-502200-001
PubMed ID 24327962
Erfassungsdatum 2013-12-13