Evidence map›Paper›PMID 18060741›Full record

ArticleCellular signalling2008

Formyl peptide receptor-mediated ERK1/2 activation occurs through G(i) and is not dependent on beta-arrestin1/2.

Jeannie M Gripentrog, Heini M Miettinen

Open access · greenAbstract read
In one paragraph

Article in Cellular signalling, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.8field-weighted citation impact, top 30% 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

12 citing papers in PubMed, 22 citations in OpenAlex.

  1. Investigation into ligand selectivity and bias at the formyl peptide receptor family.The Journal of pharmacology and experimental therapeutics · 2026
    Article
  2. Article
  3. Article
  4. Orthosteric and allosteric action of the C5a receptor antagonists.Nature structural & molecular biology · 2018
    Article
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  6. Article
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  11. 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

2 authors at 1 institution in 1 country.

Jeannie M GripentrogDepartment of Microbiology, Montana State University, 109 Lewis Hall, Bozeman, MT 59717-3520, USA.
Heini M Miettinen
Montana State University · US

Funding

Mechanisms of chemoattractant receptor regulationR01AI051726 · NIAID · MONTANA STATE UNIVERSITY (BOZEMAN) · PI MIETTINEN, HEINI MARITA · 2002 to 2005
$991k
NIAID NIH HHS AI51726NIAID NIH HHS R01 AI051726
6 · The paper itself

Abstract

Formyl peptide receptor (FPR) and C5a receptor (C5aR) are chemoattractant G protein-coupled receptors (GPCRs) involved in the innate immune response against bacterial infections and tissue injury. Like other GPCRs, they recruit beta-arrestin1/2 to the plasma membrane and activate the extracellular signal-regulated kinases 1 and 2 (ERK1/2). Previous studies with several GPCRs have suggested that beta-arrestins play an important role as signal transducers by scaffolding signaling molecules such as ERK1/2. This function of the beta-arrestins was not discovered until several years after their role in desensitization and endocytosis had been reported. In this study, we investigated the role of the beta-arrestins in the activation of ERK1/2 and receptor endocytosis. We took advantage of previously described mutants of FPR that have defects in G(i) coupling or beta-arrestin recruitment. The results obtained with the mutant FPRs, as well as experiments using an inhibitor of G(i) and cells overexpressing beta-arrestin2, showed that activation of ERK1/2 takes place through G(i) and is not affected by beta-arrestins. However, overexpression of beta-arrestin2 does enhance FPR sequestration from the cell surface, suggesting a role in desensitization, as shown for many other GPCRs. Experiments with CHO C5aR cells showed similar sensitivity to the G(i) inhibitor as CHO FPR cells, suggesting that the predominant activation of ERK1/2 through G protein may be a common characteristic among chemoattractant receptors.

Indexed as

AnimalsArrestinsbeta-ArrestinsCHO CellsCricetinaeCricetulusEndocytosisEnzyme ActivationGTP-Binding Protein alpha Subunits, Gi-GoHumansLigandsMiceMitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3Mutant ProteinsNIH 3T3 CellsArrestinsbeta-ArrestinsGTP-Binding Protein alpha Subunits, Gi-GoLigandsMitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3Mutant ProteinsPertussis ToxinReceptor, Anaphylatoxin C5aReceptors, Formyl Peptide

Identifiers

PMID18060741
PMCPMC2330276
OpenAlexW1974702025

What Socratic 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 Socratic graph.