Evidence map›Paper›PMID 32734285›Full record

ArticleRheumatology (Oxford, England)2020

Targeted photodynamic therapy selectively kills activated fibroblasts in experimental arthritis.

Daphne N Dorst, Mark Rijpkema, Marti Boss, Birgitte Walgreen, Monique M A Helsen, Desirée L Bos, Maarten Brom, Christian Klein, Peter Laverman, Peter M van der Kraan and 3 more

Open access · hybridAbstract read
In one paragraph

Article in Rheumatology (Oxford, England), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
1.9field-weighted citation impact, top 12% 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

24 citing papers in PubMed, 41 citations in OpenAlex.

  1. Review
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  4. Depleting Autoreactive B‑Cells Using Targeted Photodynamic Therapy.ACS pharmacology & translational science · 2025
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  12. Comprehensive Analysis of Fibroblast Activation Protein Expression in Interstitial Lung Diseases.American journal of respiratory and critical care medicine · 2023
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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 3 institutions in 3 countries.

Daphne N DorstDepartment of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
Mark RijpkemaDepartment of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
Marti BossDepartment of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
Birgitte WalgreenDepartment of Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands.
Monique M A HelsenDepartment of Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands.
Desirée L BosDepartment of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
Maarten BromDepartment of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
Christian KleinRoche Pharmaceutical Research and Early Development, Roche Innovation Center Zurich, Schlieren, Switzerland.
Peter LavermanDepartment of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
Peter M van der KraanDepartment of Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands.
Martin GotthardtDepartment of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
Marije I KoendersDepartment of Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands.
Mijke BuitingaClinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium.
Radboud University Nijmegen · NLKU Leuven · BERoche (Switzerland) · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIn RA, synovial fibroblasts become activated. These cells express fibroblast activation protein (FAP) and contribute to the pathogenesis by producing cytokines, chemokines and proteases. Selective depletion in inflamed joints could therefore constitute a viable treatment option. To this end, we developed and tested a new therapeutic strategy based on the selective destruction of FAP-positive cells by targeted photodynamic therapy (tPDT) using the anti-FAP antibody 28H1 coupled to the photosensitizer IRDye700DX.

methodsAfter conjugation of IRDye700DX to 28H1, the immunoreactive binding and specificity of the conjugate were determined. Subsequently, tPDT efficiency was established in vitro using a 3T3 cell line stably transfected with FAP. The biodistribution of [111In]In-DTPA-28H1 with and without IRDye700DX was assessed in healthy C57BL/6N mice and in C57BL/6N mice with antigen-induced arthritis. The potential of FAP-tPDT to induce targeted damage was determined ex vivo by treating knee joints from C57BL/6N mice with antigen-induced arthritis 24 h after injection of the conjugate. Finally, the effect of FAP-tPDT on arthritis development was determined in mice with collagen-induced arthritis.

results28H1-700DX was able to efficiently induce FAP-specific cell death in vitro. Accumulation of the anti-FAP antibody in arthritic knee joints was not affected by conjugation with the photosensitizer. Arthritis development was moderately delayed in mice with collagen-induced arthritis after FAP-tPDT.

conclusionHere we demonstrate the feasibility of tPDT to selectively target and kill FAP-positive fibroblasts in vitro and modulate arthritis in vivo using a mouse model of RA. This approach may have therapeutic potential in (refractory) arthritis.

Indexed as

3T3 CellsAnimalsArthritis, ExperimentalFemaleFibroblastsIndolesMiceMice, Inbred C57BLMice, Inbred DBAOrganosilicon CompoundsPhotochemotherapyIndolesIRDye700DX N-hydroxysuccinimide esterOrganosilicon Compoundscollagen induced arthritisfibroblast activation proteinphotodynamic therapyrheumatoid arthritis

Identifiers

PMID32734285
PMCPMC7733717
OpenAlexW3046386493

What OpenQuestion holds

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LicenceCC BY-NC
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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.