Evidence map›Paper›PMID 20189994›Full record

ArticleThe Journal of biological chemistry2010

Morphine-like opiates selectively antagonize receptor-arrestin interactions.

Paola Molinari, Vanessa Vezzi, Maria Sbraccia, Cristina Grò, Daniela Riitano, Caterina Ambrosio, Ida Casella, Tommaso Costa

Open access · hybridAbstract readComparative Study
In one paragraph

Article in The Journal of biological chemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

56 citing papers in PubMed, 102 citations in OpenAlex.

  1. Beta-Arrestin-2 Binds to Nucleolar Organizing Regions With P2X7 Receptor Stimulation and During Cell Division.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Opioid Analgesia and Opioid-Induced Adverse Effects: A Review.Pharmaceuticals (Basel, Switzerland) · 2021
    Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. The Delta-Opioid Receptor; a Target for the Treatment of Pain.Frontiers in molecular neuroscience · 2020
    Review
  11. A tetrapeptide class of biased analgesics from an Australian fungus targets the µ-opioid receptor.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  12. Article
  13. Rubiscolins are naturally occurring G protein-biased delta opioid receptor peptides.European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology · 2019
    Article
  14. Therapeutic Potential of Targeting ß-Arrestin.Frontiers in pharmacology · 2019
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article
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

8 authors at 1 institution in 1 country.

Paola MolinariDepartment of Pharmacology, Istituto Superiore di Sanità, Rome 00161, Italy.
Vanessa Vezzi
Maria Sbraccia
Cristina Grò
Daniela Riitano
Caterina Ambrosio
Ida Casella
Tommaso Costa
Istituto Superiore di Sanità · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The addictive potential of opioids may be related to their differential ability to induce G protein signaling and endocytosis. We compared the ability of 20 ligands (sampled from the main chemical classes of opioids) to promote the association of mu and delta receptors with G protein or beta-arrestin 2. Receptor-arrestin binding was monitored by bioluminescence resonance energy transfer (BRET) in intact cells, where pertussis toxin experiments indicated that the interaction was minimally affected by receptor signaling. To assess receptor-G protein coupling without competition from arrestins, we employed a cell-free BRET assay using membranes isolated from cells expressing luminescent receptors and fluorescent Gbeta(1). In this system, the agonist-induced enhancement of BRET (indicating shortening of distance between the two proteins) was G alpha-mediated (as shown by sensitivity to pertussis toxin and guanine nucleotides) and yielded data consistent with the known pharmacology of the ligands. We found marked differences of efficacy for G protein and arrestin, with a pattern suggesting more restrictive structural requirements for arrestin efficacy. The analysis of such differences identified a subset of structures showing a marked discrepancy between efficacies for G protein and arrestin. Addictive opiates like morphine and oxymorphone exhibited large differences both at delta and mu receptors. Thus, they were effective agonists for G protein coupling but acted as competitive enkephalins antagonists (delta) or partial agonists (mu) for arrestin. This arrestin-selective antagonism resulted in inhibition of short and long term events mediated by arrestin, such as rapid receptor internalization and down-regulation.

Indexed as

Arrestinsbeta-Arrestin 2beta-ArrestinsCell Line, TumorCell MembraneEnkephalinsGTP-Binding Protein alpha SubunitsHumansNarcoticsOxymorphonePertussis ToxinReceptors, Opioid, deltaReceptors, Opioid, muARRB2 protein, humanArrestinsbeta-Arrestin 2beta-ArrestinsEnkephalinsGTP-Binding Protein alpha SubunitsNarcoticsOxymorphonePertussis ToxinReceptors, Opioid, deltaReceptors, Opioid, mu

Identifiers

PMID20189994
PMCPMC2857100
OpenAlexW2073411542

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.