Evidence map›Paper›PMID 20958291›Full record

ArticleBritish journal of pharmacology2011

Agonist activation of the G protein-coupled receptor GPR35 involves transmembrane domain III and is transduced via Gα₁₃ and β-arrestin-2.

Laura Jenkins, Elisa Alvarez-Curto, Kate Campbell, Sabrina de Munnik, Meritxell Canals, Sabine Schlyer, Graeme Milligan

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

40 citing papers in PubMed, 78 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Review
  10. Review
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Receptor selectivity between the G proteins GαFASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2019
    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

7 authors at 2 institutions in 2 countries.

Laura JenkinsMolecular Pharmacology Group, Neuroscience and Molecular Pharmacology, Faculty of Biomedical and Life Sciences, University of Glasgow, Glasgow, UK.
Elisa Alvarez-Curto
Kate Campbell
Sabrina de Munnik
Meritxell Canals
Sabine Schlyer
Graeme Milligan
University of Glasgow · GBBoehringer Ingelheim (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeGPR35 is a poorly characterized G protein-coupled receptor at which kynurenic acid has been suggested to be the endogenous ligand. We wished to test this and develop assays appropriate for the study of this receptor. EXPERIMENTAL APPROACH: Human and rat orthologues of GPR35 were engineered and expressed and assays developed to assess interaction with β-arrestin-2, activation of Gα₁₃ and agonist-induced internalization. KEY

resultsGPR35-β-arrestin-2 interaction assays confirmed that both the endogenous tryptophan metabolite kynurenic acid and the synthetic ligand zaprinast had agonist action at each orthologue. Zaprinast was substantially more potent than kynurenic acid at each and both agonists displayed substantially greater potency at rat GPR35. Two novel thiazolidinediones also displayed agonism and displayed similar potency at each GPR35 orthologue. The three ligand classes acted orthosterically with respect to each other, suggesting overlapping binding sites and, consistent with this, mutation to alanine of the conserved arginine at position 3.36 or tyrosine 3.32 in transmembrane domain III abolished β-arrestin-2 recruitment in response to each ligand at each orthologue. CONCLUSIONS AND IMPLICATIONS: These studies indicate that β-arrestin-2 interaction assays are highly appropriate to explore the pharmacology of GPR35 and that Gα₁₃ activation is an alternative avenue of signal generation from GPR35. Arginine and tyrosine residues in transmembrane domain III are integral to agonist recognition and function of this receptor. The potency of kynurenic acid at human GPR35 is sufficiently low, however, to question whether it is likely to be the true endogenous ligand for this receptor.

Indexed as

AnimalsArrestinsbeta-Arrestin 2beta-ArrestinsBiological AssayCells, CulturedColonExcitatory Amino Acid AntagonistsGanglia, SpinalGTP-Binding Protein alpha Subunits, G12-G13HumansKynurenic AcidPhosphodiesterase InhibitorsProtein BindingProtein Structure, TertiaryPurinonesARRB2 protein, humanArrb2 protein, ratArrestinsbeta-Arrestin 2beta-ArrestinsExcitatory Amino Acid AntagonistsGPR35 protein, humanGPR35 protein, ratGTP-Binding Protein alpha Subunits, G12-G13Kynurenic AcidPhosphodiesterase InhibitorsPurinonesReceptors, G-Protein-Coupledzaprinast

Identifiers

PMID20958291
PMCPMC3041261
OpenAlexW1496442060

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.