Evidence map›Paper›PMID 33148884›Full record

ArticleJCI insight2020

Pathogenic, glycolytic PD-1+ B cells accumulate in the hypoxic RA joint.

Achilleas Floudas, Nuno Neto, Viviana Marzaioli, Kieran Murray, Barry Moran, Michael G Monaghan, Candice Low, Ronan H Mullan, Navin Rao, Vinod Krishna and 3 more

Open access · goldAbstract read
In one paragraph

Article in JCI insight, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
3.7field-weighted citation impact, top 6% 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

36 citing papers in PubMed, 67 citations in OpenAlex.

  1. A guide to B cell metabolism.Nature reviews. Immunology · 2026
    Review
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  5. Observational
  6. TIGITFrontiers in immunology · 2026
    Review
  7. Review
  8. Transitional and CD21BMC rheumatology · 2025
    Article
  9. [Bioinformatics analysis of oxidative stress and immune infiltration in rheumatoid arthritis].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2025
    Article
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  11. Review
  12. Review
  13. Article
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  15. Article
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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

13 authors at 4 institutions in 2 countries.

Achilleas FloudasMolecular Rheumatology, Trinity Biomedical Sciences Institute.
Nuno NetoDepartment of Mechanical and Manufacturing Engineering, and.
Viviana MarzaioliMolecular Rheumatology, Trinity Biomedical Sciences Institute.
Kieran MurrayEULAR Centre of Excellence, Centre for Arthritis and Rheumatic Diseases, St. Vincent's University Hospital, University College Dublin, Dublin, Ireland.
Barry MoranSchool of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.
Michael G MonaghanDepartment of Mechanical and Manufacturing Engineering, and.
Candice LowEULAR Centre of Excellence, Centre for Arthritis and Rheumatic Diseases, St. Vincent's University Hospital, University College Dublin, Dublin, Ireland.
Ronan H MullanDepartment of Rheumatology, Tallaght University Hospital, Dublin, Ireland.
Navin RaoJanssen Research & Development, Immunology, Spring House, Pennsylvania, USA.
Vinod KrishnaJanssen Research & Development, Immunology, Spring House, Pennsylvania, USA.
Sunil NagpalJanssen Research & Development, Immunology, Spring House, Pennsylvania, USA.
Douglas J VealeEULAR Centre of Excellence, Centre for Arthritis and Rheumatic Diseases, St. Vincent's University Hospital, University College Dublin, Dublin, Ireland.
Ursula FearonMolecular Rheumatology, Trinity Biomedical Sciences Institute.
St. Vincent's University Hospital · IESpringhouse · USTrinity College Dublin · IETallaght University Hospital · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

While autoantibodies are used in the diagnosis of rheumatoid arthritis (RA), the function of B cells in the inflamed joint remains elusive. Extensive flow cytometric characterization and SPICE algorithm analyses of single-cell synovial tissue from patients with RA revealed the accumulation of switched and double-negative memory programmed death-1 receptor-expressing (PD-1-expressing) B cells at the site of inflammation. Accumulation of memory B cells was mediated by CXCR3, evident by the observed increase in CXCR3-expressing synovial B cells compared with the periphery, differential regulation by key synovial cytokines, and restricted B cell invasion demonstrated in response to CXCR3 blockade. Notably, under 3% O2 hypoxic conditions that mimic the joint microenvironment, RA B cells maintained marked expression of MMP-9, TNF, and IL-6, with PD-1+ B cells demonstrating higher expression of CXCR3, CD80, CD86, IL-1β, and GM-CSF than their PD-1- counterparts. Finally, following functional analysis and flow cell sorting of RA PD-1+ versus PD-1- B cells, we demonstrate, using RNA-Seq and emerging fluorescence lifetime imaging microscopy of cellular NAD, a significant shift in metabolism of RA PD-1+ B cells toward glycolysis, associated with an increased transcriptional signature of key cytokines and chemokines that are strongly implicated in RA pathogenesis. Our data support the targeting of pathogenic PD-1+ B cells in RA as a focused, novel therapeutic option.

Indexed as

GlycolysisArthritis, RheumatoidB-LymphocytesCase-Control StudiesHumansHypoxiaInflammationProgrammed Cell Death 1 ReceptorReceptors, CXCR3Synovial MembraneCXCR3 protein, humanPDCD1 protein, humanProgrammed Cell Death 1 ReceptorReceptors, CXCR3B cellsCell BiologyhypoxiaMetabolismRheumatology

Identifiers

PMID33148884
PMCPMC7710281
OpenAlexW3095997914

What OpenQuestion holds

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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.