Evidence map›Paper›PMID 22937039›Full record

ArticlePloS one2012

Fc gamma receptor CD64 modulates the inhibitory activity of infliximab.

Kacper A Wojtal, Gerhard Rogler, Michael Scharl, Luc Biedermann, Pascal Frei, Michael Fried, Achim Weber, Jyrki J Eloranta, Gerd A Kullak-Ublick, Stephan R Vavricka

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
3.2field-weighted citation impact, top 9% 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

28 citing papers in PubMed, 49 citations in OpenAlex.

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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

10 authors at 3 institutions in 1 country.

Kacper A WojtalDivision of Gastroenterology and Hepatology, University Hospital Zurich, Zürich, Switzerland. kacper.wojtal@usz.ch
Gerhard Rogler
Michael Scharl
Luc Biedermann
Pascal Frei
Michael Fried
Achim Weber
Jyrki J Eloranta
Gerd A Kullak-Ublick
Stephan R Vavricka
University Hospital of Zurich · CHSwiss HIV Cohort Study · CHTriemli Hospital · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTumor necrosis factor (TNF) is an important cytokine in the pathogenesis of inflammatory bowel disease (IBD). Anti-TNF antibodies have been successfully implemented in IBD therapy, however their efficacies differ among IBD patients. Here we investigate the influence of CD64 Fc receptor on the inhibitory activity of anti-TNFs in cells of intestinal wall.

methodsIntestinal cell lines, monocytes/macrophages and peripheral blood mononuclear cells (PBMCs) were used as models. The efficacies of adalimumab, infliximab and certolizumab-pegol were assessed by RT-PCR for target genes. Protein levels and localizations were examined by Western blotting and immunofluorescence. Antibody fragments were obtained by proteolytic digestion, immunoprecipitation and protein chip analysis. Knock-down of specific gene expression was performed using siRNAs.

resultsInfliximab had limited efficacy towards soluble TNF in cell types expressing Fc gamma receptor CD64. Both adalimumab and infliximab had lower efficacies in PBMCs of IBD patients, which express elevated levels of CD64. Infliximab-TNF complexes were more potent in activating CD64 in THP-1 cells than adalimumab, which was accompanied by distinct phospho-tyrosine signals. Blocking Fc parts and isolation of Fab fragments of infliximab improved its efficacy. IFN-γ-induced expression of CD64 correlated with a loss of efficacy of infliximab, whereas reduction of CD64 expression by either siRNA or PMA treatment improved inhibitory activity of this drug. Colonic mRNA expression levels of CD64 and other Fc gamma receptors were significantly increased in the inflamed tissues of infliximab non-responders.

conclusionsCD64 modulates the efficacy of infliximab both in vitro and ex vivo, whereas the presence of this receptor has no impact on the inhibitory activity of certolizumab-pegol, which lacks Fc fragment. These data could be helpful in both predicting and evaluating the outcome of anti-TNF therapy in IBD patients with elevated systemic and local levels of Fc receptors.

Indexed as

AdalimumabAdultAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedCell LineCells, CulturedCertolizumab PegolFemaleHumansImmunoglobulin Fab FragmentsInflammatory Bowel DiseasesInfliximabLeukocytes, MononuclearMaleMicroscopy, FluorescenceMiddle AgedAdalimumabAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedCertolizumab PegolImmunoglobulin Fab FragmentsInfliximabPolyethylene GlycolsReceptors, IgGTumor Necrosis Factor-alpha

Identifiers

PMID22937039
PMCPMC3427356
OpenAlexW2100144239

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.