Evidence map›Paper›PMID 25582039›Full record

ReviewTrends in immunology2015

Confusing signals: recent progress in CTLA-4 biology.

Lucy S K Walker, David M Sansom

Open access · hybridAbstract readReview
In one paragraph

Review in Trends in immunology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 211 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
211citing papers in PubMed, 2 pooled it
14.7field-weighted citation impact, top 1% 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

211 citing papers in PubMed, 2 syntheses or guidelines pooled it, 341 citations in OpenAlex.

  1. Association betweenAging · 2021
    Pooled it
  2. Pooled it
  3. Article
  4. Decoding TNF receptor superfamily control of CD4Cell communication and signaling : CCS · 2026
    Review
  5. Review
  6. LRBA organizes distinct vesicular trafficking systems in distal nephron segments for water and sodium conservation.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  7. Review
  8. Article
  9. Review
  10. Review
  11. Review
  12. Review
  13. Review
  14. Review
  15. Review
  16. Proteostasis of immune checkpoint receptors.The Biochemical journal · 2025
    Review
  17. Article
  18. Article
  19. Article
  20. Molecular biology of the novel anticancer medications: a focus on kinases inhibitors, biologics and CAR T-cell therapy.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2025
    Review

151 more citing papers are in PubMed but not listed here.

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

2 authors at 2 institutions in 1 country.

Lucy S K WalkerInstitute for Immunity & Transplantation, University College London Division of Infection & Immunity, Royal Free Campus, London, NW3 2PF, UK. Electronic address: lucy.walker@ucl.ac.uk.
David M SansomInstitute for Immunity & Transplantation, University College London Division of Infection & Immunity, Royal Free Campus, London, NW3 2PF, UK. Electronic address: d.sansom@ucl.ac.uk.
The Royal Free Hospital · GBUniversity College London · GB

Funding

Biotechnology and Biological Sciences Research Council BB/H013598/2Diabetes UK 12/0004477Medical Research Council G0802382
6 · The paper itself

Abstract

The mechanism of action of cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) remains surprisingly unclear. Regulatory T (Treg) cells can use CTLA-4 to elicit suppression; however, CTLA-4 also operates in conventional T cells, reputedly by triggering inhibitory signals. Recently, interactions mediated via the CTLA-4 cytoplasmic domain have been shown to preferentially affect Treg cells, yet other evidence suggests that the extracellular domain of CTLA-4 is sufficient to elicit suppression. Here, we discuss these paradoxical findings in the context of CTLA-4-mediated ligand regulation. We propose that the function of CTLA-4 cytoplasmic domain is not to transmit inhibitory signals but to precisely control the turnover, cellular location, and membrane delivery of CTLA-4 to facilitate its central function: regulating the access of CD28 to their shared ligands.

Indexed as

Signal TransductionAnimalsAntigen-Presenting CellsCell MovementCTLA-4 AntigenDown-RegulationHumansLigandsProtein BindingProtein Interaction Domains and MotifsProtein TransportT-Lymphocytes, RegulatoryCTLA-4 AntigenLigandsCD28costimulationCTLA-4T cell activationT cell tolerance

Identifiers

PMID25582039
PMCPMC4323153
OpenAlexW2073776582

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.