Evidence map›Paper›PMID 27272042›Full record

ArticlePloS one2016

Characterisation of the Novel Mixed Mu-NOP Peptide Ligand Dermorphin-N/OFQ (DeNo).

Mark F Bird, Maria Camilla Cerlesi, Mark Brown, Davide Malfacini, Vanessa Vezzi, Paola Molinari, Laura Micheli, Lorenzo Di Cesare Mannelli, Carla Ghelardini, Remo Guerrini and 2 more

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 55 citations in OpenAlex.

  1. Pooled it
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  9. Novel Mixed NOP/Opioid Receptor Peptide Agonists.Journal of medicinal chemistry · 2021
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 5 institutions in 2 countries.

Mark F BirdDepartment of Cardiovascular Sciences, University of Leicester, Division of Anaesthesia, Critical Care and Pain Management, Leicester Royal Infirmary, Leicester, LE2 7LX, United Kingdom.
Maria Camilla CerlesiDepartment of Medical Sciences, Section of Pharmacology and National Institute of Neuroscience, University of Ferrara, Ferrara, Italy.
Mark BrownDepartment of Cardiovascular Sciences, University of Leicester, Division of Anaesthesia, Critical Care and Pain Management, Leicester Royal Infirmary, Leicester, LE2 7LX, United Kingdom.
Davide MalfaciniDepartment of Medical Sciences, Section of Pharmacology and National Institute of Neuroscience, University of Ferrara, Ferrara, Italy.
Vanessa VezziDepartment of Pharmacology, Istituto Superiore di Sanità, Rome, 00161, Italy.
Paola MolinariDepartment of Pharmacology, Istituto Superiore di Sanità, Rome, 00161, Italy.
Laura MicheliDepartment of Neuroscience, Psychology, Drug Research and Child Health-Neurofarba, Pharmacology and Toxicology Section, University of Florence, Florence, Italy.
Lorenzo Di Cesare MannelliDepartment of Neuroscience, Psychology, Drug Research and Child Health-Neurofarba, Pharmacology and Toxicology Section, University of Florence, Florence, Italy.
Carla GhelardiniDepartment of Neuroscience, Psychology, Drug Research and Child Health-Neurofarba, Pharmacology and Toxicology Section, University of Florence, Florence, Italy.
Remo GuerriniDepartment of Chemical and Pharmaceutical Sciences and LTTA, University of Ferrara, Ferrara, Italy.
Girolamo CalòDepartment of Medical Sciences, Section of Pharmacology and National Institute of Neuroscience, University of Ferrara, Ferrara, Italy.
David G LambertDepartment of Cardiovascular Sciences, University of Leicester, Division of Anaesthesia, Critical Care and Pain Management, Leicester Royal Infirmary, Leicester, LE2 7LX, United Kingdom.
University of Ferrara · ITUniversity of Florence · ITIstituto Superiore di Sanità · ITLeicester Royal Infirmary · GBUniversity of Leicester · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionOpioid receptors are currently classified as Mu (μ), Delta (δ), Kappa (κ) plus the opioid related nociceptin/orphanin FQ (N/OFQ) peptide receptor (NOP). Despite compelling evidence for interactions and benefits of targeting more than one receptor type in producing analgesia, clinical ligands are Mu agonists. In this study we have designed a Mu-NOP agonist named DeNo. The Mu agonist component is provided by dermorphin, a peptide isolated from the skin of Phyllomedusa frogs and the NOP component by the endogenous agonist N/OFQ.

methodsWe have assessed receptor binding profile of DeNo and compared with dermorphin and N/OFQ. In a series of functional screens we have assessed the ability to (i) increase Ca2+ in cells coexpressing recombinant receptors and a the chimeric protein Gαqi5, (ii) stimulate the binding of GTPγ[35S], (iii) inhibit cAMP formation, (iv) activate MAPKinase, (v) stimulate receptor-G protein and arrestin interaction using BRET, (vi) electrically stimulated guinea pig ileum (gpI) assay and (vii) ability to produce analgesia via the intrathecal route in rats.

resultsDeNo bound to Mu (pKi; 9.55) and NOP (pKi; 10.22) and with reasonable selectivity. This translated to increased Ca2+ in Gαqi5 expressing cells (pEC50 Mu 7.17; NOP 9.69), increased binding of GTPγ[35S] (pEC50 Mu 7.70; NOP 9.50) and receptor-G protein interaction in BRET (pEC50 Mu 8.01; NOP 9.02). cAMP formation was inhibited and arrestin was activated (pEC50 Mu 6.36; NOP 8.19). For MAPK DeNo activated p38 and ERK1/2 at Mu but only ERK1/2 at NOP. In the gpI DeNO inhibited electrically-evoked contractions (pEC50 8.63) that was sensitive to both Mu and NOP antagonists. DeNo was antinociceptive in rats.

conclusionCollectively these data validate the strategy used to create a novel bivalent Mu-NOP peptide agonist by combining dermorphin (Mu) and N/OFQ (NOP). This molecule behaves essentially as the parent compounds in vitro. In the antonocicoeptive assays employed in this study DeNo displays only weak antinociceptive properties.

Indexed as

AnimalsCalciumCHO CellsCricetulusGuinea PigsHEK293 CellsHumansMaleNociceptin ReceptorOpioid PeptidesPeptidesRatsRats, Sprague-DawleyReceptors, OpioidReceptors, Opioid, muCalciumdermorphinNociceptin ReceptorOpioid PeptidesPeptidesReceptors, OpioidReceptors, Opioid, mu

Identifiers

PMID27272042
PMCPMC4896453
OpenAlexW2409825930

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.