Solid-phase peptide head-to-side chain cyclodimerization: Discovery of C2-symmetric cyclic lactam hybrid α-melanocyte-stimulating hormone (MSH)/agouti-signaling protein (ASIP) analogues with potent activities at the human melanocortin receptors
| Autor: | Zhihua Liu, Minying Cai, Victor J. Hruby, Erin S. Palmer, Dev Trivedi, Alexander V. Mayorov, James P. Cain, Josef Vagner |
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| Rok vydání: | 2010 |
| Předmět: |
Models
Molecular endocrine system Melanocyte-stimulating hormone Lactams Physiology Molecular Sequence Data Peptide Biology Peptides Cyclic Biochemistry Article Cellular and Molecular Neuroscience chemistry.chemical_compound Endocrinology Melanocortin receptor Cyclic AMP Humans Amino Acid Sequence Peptide sequence G protein-coupled receptor chemistry.chemical_classification Molecular Structure integumentary system Receptors Melanocortin digestive oral and skin physiology HEK293 Cells chemistry alpha-MSH Lactam Agouti Signaling Protein Pharmacophore Melanocortin hormones hormone substitutes and hormone antagonists Protein Binding |
| Zdroj: | Peptides. 31:1894-1905 |
| ISSN: | 0196-9781 |
| DOI: | 10.1016/j.peptides.2010.06.026 |
| Popis: | A novel hybrid melanocortin pharmacophore was designed based on the pharmacophores of the Agouti signaling protein (ASIP), an endogenous melanocortin antagonist, and α-melanocyte-stimulating hormone (α-MSH), an endogenous melanocortin agonist. The designed hybrid ASIP/MSH pharmacophore was explored in monomeric cyclic, and cyclodimeric templates. The monomeric cyclic disulfide series yielded peptides with hMC3R-selective non-competitive binding affinities. The direct on-resin peptide lactam cyclodimerization yielded nanomolar range (25-120 nM) hMC1R-selective full and partial agonists in the cyclodimeric lactam series which demonstrates an improvement over the previous attempts at hybridization of MSH and agouti protein sequences. The secondary structure-oriented pharmacophore hybridization strategy will prove useful in development of unique allosteric and orthosteric melanocortin receptor modulators. This report also illustrates the utility of peptide cyclodimerization for the development of novel GPCR peptide ligands. |
| Databáze: | OpenAIRE |
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