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Lee YS, Remesic M, Ramos-Colon C, Wu Z, LaVigne J, Molnar G, Tymecka D, Misicka A, Streicher JM, Hruby VJ, Porreca F. Multifunctional Enkephalin Analogs with a New Biological Profile: MOR/DOR Agonism and KOR Antagonism. Biomedicines 2021; 9:biomedicines9060625. [PMID: 34072734 PMCID: PMC8229567 DOI: 10.3390/biomedicines9060625] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 11/25/2022] Open
Abstract
In our previous studies, we developed a series of mixed MOR/DOR agonists that are enkephalin-like tetrapeptide analogs with an N-phenyl-N-piperidin-4-ylpropionamide (Ppp) moiety at the C-terminus. Further SAR study on the analogs, initiated by the findings from off-target screening, resulted in the discovery of LYS744 (6, Dmt-DNle-Gly-Phe(p-Cl)-Ppp), a multifunctional ligand with MOR/DOR agonist and KOR antagonist activity (GTPγS assay: IC50 = 52 nM, Imax = 122% cf. IC50 = 59 nM, Imax = 100% for naloxone) with nanomolar range of binding affinity (Ki = 1.3 nM cf. Ki = 2.4 nM for salvinorin A). Based on its unique biological profile, 6 is considered to possess high therapeutic potential for the treatment of chronic pain by modulating pathological KOR activation while retaining analgesic efficacy attributed to its MOR/DOR agonist activity.
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Affiliation(s)
- Yeon Sun Lee
- Department of Pharmacology, University of Arizona, Tucson, AZ 85724, USA; (J.L.); (G.M.); (J.M.S.); (F.P.)
- Correspondence: ; Tel.: +1-520-626-2820
| | - Michael Remesic
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ 85721, USA; (M.R.); (C.R.-C.); (V.J.H.)
| | - Cyf Ramos-Colon
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ 85721, USA; (M.R.); (C.R.-C.); (V.J.H.)
| | - Zhijun Wu
- ABC Resource, Plainsboro, NJ 08536, USA;
| | - Justin LaVigne
- Department of Pharmacology, University of Arizona, Tucson, AZ 85724, USA; (J.L.); (G.M.); (J.M.S.); (F.P.)
| | - Gabriella Molnar
- Department of Pharmacology, University of Arizona, Tucson, AZ 85724, USA; (J.L.); (G.M.); (J.M.S.); (F.P.)
| | - Dagmara Tymecka
- Faculty of Chemistry, University of Warsaw, Pasteura, PL-02-093 Warsaw, Poland; (D.T.); (A.M.)
| | - Aleksandra Misicka
- Faculty of Chemistry, University of Warsaw, Pasteura, PL-02-093 Warsaw, Poland; (D.T.); (A.M.)
| | - John M. Streicher
- Department of Pharmacology, University of Arizona, Tucson, AZ 85724, USA; (J.L.); (G.M.); (J.M.S.); (F.P.)
| | - Victor J. Hruby
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ 85721, USA; (M.R.); (C.R.-C.); (V.J.H.)
| | - Frank Porreca
- Department of Pharmacology, University of Arizona, Tucson, AZ 85724, USA; (J.L.); (G.M.); (J.M.S.); (F.P.)
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