Discovery of a Potent and Efficacious Peptide Derivative for δ/μ Opioid Agonist/neurokinin 1 Antagonist Activity with a 2',6'-dimethyl-L-tyrosine: in Vitro, in Vivo, and NMR-based Structural Studies
Overview
Authors
Affiliations
Multivalent ligands with δ/μ opioid agonist and NK1 antagonist activities have shown promising analgesic potency without detectable sign of toxicities, including motor skill impairment and opioid-induced tolerance. To improve their biological activities and metabolic stability, structural optimization was performed on our peptide-derived lead compounds by introducing 2',6'-dimethyl-L-tyrosine (Dmt) instead of Tyr at the first position. The compound 7 (Dmt-D-Ala-Gly-Phe-Met-Pro-Leu-Trp-NH-[3',5'-(CF(3))(2)-Bzl]) showed improved multivalent bioactivities compared to those of the lead compounds, had more than 6 h half-life in rat plasma, and had significant antinociceptive efficacy in vivo. The NMR structural analysis suggested that Dmt(1) incorporation in compound 7 induces the structured conformation in the opioid pharmacophore (N-terminus) and simultaneously shifts the orientation of the NK1 pharmacophore (C-terminus), consistent with its affinities and activities at both opioid and NK1 receptors. These results indicate that compound 7 is a valuable research tool to seek a novel analgesic drug.
Novel Mixed NOP/Opioid Receptor Peptide Agonists.
Pacifico S, Albanese V, Illuminati D, Marzola E, Fabbri M, Ferrari F J Med Chem. 2021; 64(10):6656-6669.
PMID: 33998786 PMC: 8279409. DOI: 10.1021/acs.jmedchem.0c02062.
Synthesis and Pharmacological Evaluation of Hybrids Targeting Opioid and Neurokinin Receptors.
Wtorek K, Adamska-Bartlomiejczyk A, Piekielna-Ciesielska J, Ferrari F, Ruzza C, Kluczyk A Molecules. 2019; 24(24).
PMID: 31817441 PMC: 6943619. DOI: 10.3390/molecules24244460.
Novel Pharmacological Nonopioid Therapies in Chronic Pain.
Kaye A, Cornett E, Hart B, Patil S, Pham A, Spalitta M Curr Pain Headache Rep. 2018; 22(4):31.
PMID: 29616344 DOI: 10.1007/s11916-018-0674-8.
Genetic and pharmacological antagonism of NK receptor prevents opiate abuse potential.
Sandweiss A, McIntosh M, Moutal A, Davidson-Knapp R, Hu J, Giri A Mol Psychiatry. 2017; 23(8):1745-1755.
PMID: 28485408 PMC: 5680162. DOI: 10.1038/mp.2017.102.
Neurokinin 1 and opioid receptors: relationships and interactions in nervous system.
Xiao J, Zeng S, Wang X, Babazada H, Li Z, Liu R Transl Perioper Pain Med. 2017; 1(3):11-21.
PMID: 28409174 PMC: 5388438.