Evidence map›Paper›PMID 34257415›Full record

ArticleNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2021

Pharmacological and genetic manipulations at the µ-opioid receptor reveal arrestin-3 engagement limits analgesic tolerance and does not exacerbate respiratory depression in mice.

Li He, Sarah W Gooding, Elinor Lewis, Lindsey C Felth, Anirudh Gaur, Jennifer L Whistler

Open access · hybridAbstract read
In one paragraph

Article in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
4.0field-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

31 citing papers in PubMed, 60 citations in OpenAlex.

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  7. Role of β-Arrestin 2 in the antinociceptive and side effect profile of morphine and the novel mu opioid receptor agonists, kurkinorin and kurkinol.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
    Article
  8. Total synthesis and biological activity of "carbamorphine": O-to-CHProceedings of the National Academy of Sciences of the United States of America · 2025
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  17. Pharmacological reviews · 2023
    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 1 institution in 1 country.

Li HeCenter for Neuroscience, University of California-Davis, Davis, CA, USA.
Sarah W GoodingCenter for Neuroscience, University of California-Davis, Davis, CA, USA.
Elinor LewisCenter for Neuroscience, University of California-Davis, Davis, CA, USA.
Lindsey C FelthCenter for Neuroscience, University of California-Davis, Davis, CA, USA.
Anirudh GaurCenter for Neuroscience, University of California-Davis, Davis, CA, USA.
Jennifer L WhistlerCenter for Neuroscience, University of California-Davis, Davis, CA, USA. jlwhistler@ucdavis.edu.
University of California, Davis · US

Funding

Learning, Memory, and Plasticity (LaMP) Training ProgramT32MH112507 · NIMH · UNIVERSITY OF CALIFORNIA AT DAVIS · PI Karen Zito · 2017 to 2026
$2.4M
NIMH NIH HHS T32 MH112507
6 · The paper itself

Abstract

Opioid drugs are widely used analgesics that activate the G protein-coupled µ-opioid receptor, whose endogenous neuropeptide agonists, endorphins and enkephalins, are potent pain relievers. The therapeutic utility of opioid drugs is hindered by development of tolerance to the analgesic effects, requiring dose escalation for persistent pain control and leading to overdose and fatal respiratory distress. The prevailing hypothesis is that the intended analgesic effects of opioid drugs are mediated by µ-opioid receptor signaling to G protein, while the side-effects of respiratory depression and analgesic tolerance are caused by engagement of the receptor with the arrestin-3 protein. Consequently, opioid drug development has focused exclusively on identifying agonists devoid of arrestin-3 engagement. Here, we challenge the prevailing hypothesis with a panel of six clinically relevant opioid drugs and mice of three distinct genotypes with varying abilities to promote morphine-mediated arrestin-3 engagement. With this genetic and pharmacological approach, we demonstrate that arrestin-3 recruitment does not impact respiratory depression, and effective arrestin-3 engagement reduces, rather than exacerbates, the development of analgesic tolerance. These studies suggest that future development of safer opioids should focus on identifying opioid ligands that recruit both G protein and arrestin-3, thereby mimicking the signaling profile of most endogenous µ-opioid receptor agonists.

Indexed as

Receptors, OpioidRespiratory InsufficiencyAnalgesicsAnalgesics, OpioidAnimalsbeta-Arrestin 2Drug ToleranceMiceMorphineReceptors, Opioid, muAnalgesicsAnalgesics, Opioidbeta-Arrestin 2MorphineReceptors, OpioidReceptors, Opioid, mu

Identifiers

PMID34257415
PMCPMC8581001
OpenAlexW3181930852

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.