Evidence map›Paper›PMID 22375000›Full record

ArticleThe Journal of biological chemistry2012

GRK2 protein-mediated transphosphorylation contributes to loss of function of μ-opioid receptors induced by neuropeptide FF (NPFF2) receptors.

Lionel Moulédous, Carine Froment, Stéphanie Dauvillier, Odile Burlet-Schiltz, Jean-Marie Zajac, Catherine Mollereau

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

21 citing papers in PubMed, 42 citations in OpenAlex.

  1. Local GPCR density tips the balance of μ-opioid receptor trafficking.bioRxiv : the preprint server for biology · 2026
    Article
  2. Review
  3. Opioid receptors signaling network.Journal of cell communication and signaling · 2022
    Article
  4. Review
  5. Article
  6. 5-HTMolecular psychiatry · 2019
    Article
  7. Review
  8. Article
  9. Review
  10. Article
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  13. Review
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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

6 authors at 3 institutions in 1 country.

Lionel MoulédousInstitut de Pharmacologie et de Biologie Structurale, CNRS/Université de Toulouse, UMR 5089, 205 Route de Narbonne, 31077 Toulouse Cedex, France.
Carine Froment
Stéphanie Dauvillier
Odile Burlet-Schiltz
Jean-Marie Zajac
Catherine Mollereau
Université de Toulouse · FRCentre National de la Recherche Scientifique · FRInstitut de Pharmacologie et de Biologie Structurale · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neuropeptide FF (NPFF) interacts with specific receptors to modulate opioid functions in the central nervous system. On dissociated neurons and neuroblastoma cells (SH-SY5Y) transfected with NPFF receptors, NPFF acts as a functional antagonist of μ-opioid (MOP) receptors by attenuating the opioid-induced inhibition of calcium conductance. In the SH-SY5Y model, MOP and NPFF(2) receptors have been shown to heteromerize. To understand the molecular mechanism involved in the anti-opioid activity of NPFF, we have investigated the phosphorylation status of the MOP receptor using phospho-specific antibody and mass spectrometry. Similarly to direct opioid receptor stimulation, activation of the NPFF(2) receptor by [D-Tyr-1-(NMe)Phe-3]NPFF (1DMe), an analog of NPFF, induced the phosphorylation of Ser-377 of the human MOP receptor. This heterologous phosphorylation was unaffected by inhibition of second messenger-dependent kinases and, contrarily to homologous phosphorylation, was prevented by inactivation of G(i/o) proteins by pertussis toxin. Using siRNA knockdown we could demonstrate that 1DMe-induced Ser-377 cross-phosphorylation and MOP receptor loss of function were mediated by the G protein receptor kinase GRK2. In addition, mass spectrometric analysis revealed that the phosphorylation pattern of MOP receptors was qualitatively similar after treatment with the MOP agonist Tyr-D-Ala-Gly (NMe)-Phe-Gly-ol (DAMGO) or after treatment with the NPFF agonist 1DMe, but the level of multiple phosphorylation was more intense after DAMGO. Finally, NPFF(2) receptor activation was sufficient to recruit β-arrestin2 to the MOP receptor but not to induce its internalization. These data show that NPFF-induced heterologous desensitization of MOP receptor signaling is mediated by GRK2 and could involve transphosphorylation within the heteromeric receptor complex.

Indexed as

Amino Acid SequenceAnalgesics, OpioidArrestinsbeta-ArrestinsCell Line, TumorEnkephalin, Ala(2)-MePhe(4)-Gly(5)-Gene Knockdown TechniquesG-Protein-Coupled Receptor Kinase 2Heterotrimeric GTP-Binding ProteinsHumansMolecular Sequence DataNeuroblastomaPhosphorylationReceptors, G-Protein-CoupledReceptors, NeuropeptideReceptors, Opioid, muAnalgesics, OpioidArrestinsbeta-ArrestinsEnkephalin, Ala(2)-MePhe(4)-Gly(5)-G-Protein-Coupled Receptor Kinase 2GRK2 protein, humanHeterotrimeric GTP-Binding Proteinsneuropeptide FF receptorReceptors, G-Protein-CoupledReceptors, NeuropeptideReceptors, Opioid, muSerineseven-transmembrane G-protein-coupled receptor

Identifiers

PMID22375000
PMCPMC3339982
OpenAlexW2069021263

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.