Evidence map›Paper›PMID 21518774›Full record

ArticleMolecular pharmacology2011

Cholesterol regulates micro-opioid receptor-induced beta-arrestin 2 translocation to membrane lipid rafts.

Yu Qiu, Yan Wang, Ping-Yee Law, Hong-Zhuan Chen, Horace H Loh

Open access · bronzeAbstract read
In one paragraph

Article in Molecular pharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

33 citing papers in PubMed, 49 citations in OpenAlex.

  1. Article
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  5. G Protein-Coupled Receptor Dimerization-What Next?International journal of molecular sciences · 2024
    Review
  6. Review
  7. Patching holes in the mechanism of opioid tolerance.Trends in pharmacological sciences · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Observational
  16. GRK Mediates μ-Opioid Receptor Plasma Membrane Reorganization.Frontiers in molecular neuroscience · 2019
    Article
  17. Article
  18. Article
  19. Article
  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

5 authors at 1 institution in 1 country.

Yu QiuDepartment of Pharmacology, University of Minnesota, Minnesota 55455-0217, USA.
Yan Wang
Ping-Yee Law
Hong-Zhuan Chen
Horace H Loh
University of Minnesota · US

Funding

Subcellular Targeting/Packaging of Opioids/ReceptorsP50DA011806 · NIDA · UNIVERSITY OF MINNESOTA TWIN CITIES · PI LOH, HORACE · 1998 to 2012
$14.0M
NEUROCHEMICAL BASIS ON NARCOTIC ADDICTIONR01DA000564 · NIDA · UNIVERSITY OF MINNESOTA TWIN CITIES · PI LOH, HORACE · 1985 to 2010
$5.1M
G-PROTEINS AND OPIOID RECEPTOR FUNCTIONSR01DA007339 · NIDA · UNIVERSITY OF MINNESOTA TWIN CITIES · PI LAW, PING-YEE · 1991 to 2008
$2.5M
NEURONAL REGULATION OF OPIOID RECEPTOR TRAFFICKINGR01DA016674 · NIDA · UNIVERSITY OF MINNESOTA TWIN CITIES · PI LAW, PING-YEE · 2004 to 2008
$1.4M
G PROTEINS AND OPIOID RECEPTOR FUNCTIONSK05DA000513 · NIDA · UNIVERSITY OF MINNESOTA TWIN CITIES · PI LAW, PING-YEE · 2001 to 2010
$1.2M
Neurochemical Basis of Opiate AddictionR56DA000564 · NIDA · UNIVERSITY OF MINNESOTA · PI LAW, PING-YEE, LOH, HORACE · 2012 to 2013
$329k
NIDA NIH HHS DA000564NIDA NIH HHS DA007339NIDA NIH HHS DA011806NIDA NIH HHS DA016674NIDA NIH HHS K05 DA000513NIDA NIH HHS K05-DA00513NIDA NIH HHS P50 DA011806NIDA NIH HHS R01 DA000564NIDA NIH HHS R01 DA007339NIDA NIH HHS R01 DA016674NIDA NIH HHS R56 DA000564
6 · The paper itself

Abstract

μ-Opioid receptor (OPRM1) is mainly localized in lipid raft microdomains but internalizes through clathrin-dependent pathways. Our previous studies demonstrated that disruption of lipid rafts by cholesterol-depletion reagent blocked the agonist-induced internalization of OPRM1 and G protein-dependent signaling. The present study demonstrated that reduction of cholesterol level decreased and culturing cells in excess cholesterol increased the agonist-induced internalization and desensitization of OPRM1, respectively. Further analyses indicated that modulation of cellular cholesterol level did not affect agonist-induced receptor phosphorylation but did affect membrane translocation of β-arrestins. The translocation of β-arrestins was blocked by cholesterol reduction, and the effect could be reversed by incubating with cholesterol. OptiPrep gradient separation of lipid rafts revealed that excess cholesterol retained more receptors in lipid raft domains and facilitated the recruitment of β-arrestins to these microdomains upon agonist activation. Moreover, excess cholesterol could evoke receptor internalization and protein kinase C-independent extracellular signal-regulated kinases activation upon morphine treatment. Therefore, these results suggest that cholesterol not only can influence OPRM1 localization in lipid rafts but also can effectively enhance the recruitment of β-arrestins and thereby affect the agonist-induced trafficking and agonist-dependent signaling of OPRM1.

Indexed as

AnimalsArrestinsbeta-Arrestin 2beta-ArrestinsCholesterolMembrane LipidsMicePhosphorylationProtein TransportReceptors, OpioidTumor Cells, CulturedArrb2 protein, mouseArrestinsbeta-Arrestin 2beta-ArrestinsCholesterolMembrane LipidsReceptors, Opioid

Identifiers

PMID21518774
PMCPMC3127540
OpenAlexW2160695915

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.