Evidence map›Paper›PMID 29510118›Full record

ArticleInternational journal for parasitology2018

TGF-β mimic proteins form an extended gene family in the murine parasite Heligmosomoides polygyrus.

Danielle J Smyth, Yvonne Harcus, Madeleine P J White, William F Gregory, Janina Nahler, Ian Stephens, Edward Toke-Bjolgerud, James P Hewitson, Alasdair Ivens, Henry J McSorley and 1 more

Open access · hybridAbstract read
In one paragraph

Article in International journal for parasitology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

41 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
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  4. Molecular Engineering of the Helminth TGF-β Mimetics, TGM1 and TGM4, Reveals a Novel Antagonist of TGF-β Signaling in Fibroblasts.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
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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

11 authors at 6 institutions in 1 country.

Danielle J SmythWellcome Centre for Molecular Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, UK.
Yvonne HarcusInstitute of Infection and Immunology Research and Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh, UK.
Madeleine P J WhiteWellcome Centre for Molecular Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, UK.
William F GregoryWellcome Centre for Molecular Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, UK.
Janina NahlerMRC Weatherall Institute of Molecular Medicine, University of Oxford, UK.
Ian StephensWellcome Centre for Molecular Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, UK.
Edward Toke-BjolgerudWellcome Centre for Molecular Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, UK.
James P HewitsonCentre for Infection and Immunology, Department of Biology, University of York, UK.
Alasdair IvensInstitute of Infection and Immunology Research and Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh, UK.
Henry J McSorleyInstitute of Infection and Immunology Research and Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh, UK; MRC Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, UK.
Rick M MaizelsWellcome Centre for Molecular Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, UK; Institute of Infection and Immunology Research and Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh, UK. Electronic address: rick.maizels@glasgow.ac.uk.
Wellcome Centre for Molecular Parasitology · GBCentre for Immunity, Infection and Evolution · GBUniversity of Edinburgh · GBUniversity of Glasgow · GBUniversity of Oxford · GBUniversity of York · GB

Funding

Wellcome TrustWellcome Trust 104111Wellcome Trust 106122
6 · The paper itself

Abstract

We recently reported the discovery of a new parasite-derived protein that functionally mimics the immunosuppressive cytokine transforming growth factor (TGF)-β. The Heligmosomoides polygyrus TGF-β Mimic (Hp-TGM) shares no homology to any TGF-β family member, however it binds the mammalian TGF-β receptor and induces expression of Foxp3, the canonical transcription factor of both mouse and human regulatory T cells. Hp-TGM consists of five atypical Complement Control Protein (CCP, Pfam 00084) domains, each lacking certain conserved residues and 12-15 amino acids longer than the 60-70 amino acids consensus domain, but with a recognizable 3-cysteine, tryptophan, cysteine motif. We now report on the identification of a family of nine related Hp-TGM homologues represented in the secreted proteome and transcriptome of H. polygyrus. Recombinant proteins from five of the nine new TGM members were tested for TGF-β activity, but only two were functionally active in an MFB-F11 reporter assay, and by the induction of T cell Foxp3 expression. Sequence comparisons reveal that proteins with functional activity are similar or identical to Hp-TGM across the first three CCP domains, but more variable in domains 4 and 5. Inactive proteins diverged in all domains, or lacked some domains entirely. Testing truncated versions of Hp-TGM confirmed that domains 1-3 are essential for full activity in vitro, while domains 4 and 5 are not required. Further studies will elucidate whether these latter domains fulfill other functions in promoting host immune regulation during infection and if the more divergent family members play other roles in immunomodulation.

Indexed as

AnimalsCloning, MolecularForkhead Transcription FactorsGene Expression RegulationHelminth ProteinsMiceNematospiroides dubiusSpleenTransforming Growth Factor betaForkhead Transcription FactorsFoxp3 protein, mouseHelminth ProteinsTransforming Growth Factor betaComplement Control Protein familyHeligmosomoides polygyrusHelminthHp-TGMRegulatory T cellTGF-β mimic

Identifiers

PMID29510118
PMCPMC5904571
OpenAlexW2790156596

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.