Evidence map›Paper›PMID 36322928›Full record

ArticleBlood2023

Therapeutic activity of GARP:TGF-β1 blockade in murine primary myelofibrosis.

Sara Lecomte, Julien Devreux, Grégoire de Streel, Nicolas van Baren, Violaine Havelange, David Schröder, Noora Vaherto, Christophe Vanhaver, Christophe Vanderaa, Noémie Dupuis and 4 more

Open access · bronzeAbstract read
In one paragraph

Article in Blood, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.4field-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

18 citing papers in PubMed, 19 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

14 authors at 3 institutions in 2 countries.

Sara Lecomtede Duve Institute, Université catholique de Louvain, Brussels, Belgium.
Julien Devreuxde Duve Institute, Université catholique de Louvain, Brussels, Belgium.ORCID 0000-0003-0498-5903
Grégoire de Streelde Duve Institute, Université catholique de Louvain, Brussels, Belgium.ORCID 0000-0003-2262-9670
Nicolas van Barende Duve Institute, Université catholique de Louvain, Brussels, Belgium.ORCID 0000-0003-4548-0266
Violaine Havelangede Duve Institute, Université catholique de Louvain, Brussels, Belgium.
David Schröderde Duve Institute, Université catholique de Louvain, Brussels, Belgium.ORCID 0000-0001-9588-0415
Noora Vahertode Duve Institute, Université catholique de Louvain, Brussels, Belgium.
Christophe Vanhaverde Duve Institute, Université catholique de Louvain, Brussels, Belgium.
Christophe Vanderaade Duve Institute, Université catholique de Louvain, Brussels, Belgium.ORCID 0000-0001-7443-5427
Noémie Dupuisde Duve Institute, Université catholique de Louvain, Brussels, Belgium.
Christian Pecquetde Duve Institute, Université catholique de Louvain, Brussels, Belgium.ORCID 0000-0002-8623-3483
Pierre G Couliede Duve Institute, Université catholique de Louvain, Brussels, Belgium.
Stefan N Constantinescude Duve Institute, Université catholique de Louvain, Brussels, Belgium.ORCID 0000-0002-8599-2699
Sophie Lucasde Duve Institute, Université catholique de Louvain, Brussels, Belgium.ORCID 0000-0003-1287-7996
de Duve Institute · BELudwig Cancer Research · BECliniques Universitaires Saint-Luc · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Primary myelofibrosis (PMF) is a myeloproliferative neoplasm characterized by the clonal expansion of myeloid cells, notably megakaryocytes (MKs), and an aberrant cytokine production leading to bone marrow (BM) fibrosis and insufficiency. Current treatment options are limited. TGF-β1, a profibrotic and immunosuppressive cytokine, is involved in PMF pathogenesis. While all cell types secrete inactive, latent TGF-β1, only a few activate the cytokine via cell type-specific mechanisms. The cellular source of the active TGF-β1 implicated in PMF is not known. Transmembrane protein GARP binds and activates latent TGF-β1 on the surface of regulatory T lymphocytes (Tregs) and MKs or platelets. Here, we found an increased expression of GARP in the BM and spleen of mice with PMF and tested the therapeutic potential of a monoclonal antibody (mAb) that blocks TGF-β1 activation by GARP-expressing cells. GARP:TGF-β1 blockade reduced not only fibrosis but also the clonal expansion of transformed cells. Using mice carrying a genetic deletion of Garp in either Tregs or MKs, we found that the therapeutic effects of GARP:TGF-β1 blockade in PMF imply targeting GARP on Tregs. These therapeutic effects, accompanied by increased IFN-γ signals in the spleen, were lost upon CD8 T-cell depletion. Our results suggest that the selective blockade of TGF-β1 activation by GARP-expressing Tregs increases a CD8 T-cell-mediated immune reaction that limits transformed cell expansion, providing a novel approach that could be tested to treat patients with myeloproliferative neoplasms.

Indexed as

Primary MyelofibrosisTransforming Growth Factor beta1AnimalsAntibodies, MonoclonalCytokinesFibrosisMiceT-Lymphocytes, RegulatoryAntibodies, MonoclonalCytokinesTransforming Growth Factor beta1

Identifiers

PMID36322928
PMCPMC10651781
OpenAlexW4308056478

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.