Evidence map›Paper›PMID 19651854›Full record

ArticleInfection and immunity2009

Mycobacterium tuberculosis cell wall glycolipids directly inhibit CD4+ T-cell activation by interfering with proximal T-cell-receptor signaling.

Robert N Mahon, Roxana E Rojas, Scott A Fulton, Jennifer L Franko, Clifford V Harding, W Henry Boom

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

29 citing papers in PubMed, 52 citations in OpenAlex.

  1. Review
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  5. Review
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  7. Article
  8. Apoptosis in peripheral blood lymphocytes in intestinal tuberculosis and Crohn's disease: Implications to diagnostic differentiation.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2020
    Article
  9. Article
  10. Journal of immunology (Baltimore, Md. : 1950) · 2017
    Article
  11. Local and Systemic CD4Journal of immunology research · 2017
    Article
  12. 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

6 authors at 2 institutions in 1 country.

Robert N MahonDivision of Infectious Diseases, Department of Medicine, Case Western Reserve University and University Hospitals, Case Medical Center, 10900 Euclid Avenue, BRB 1010B, Cleveland, OH 44106-4984, USA. rnm4@case.edu
Roxana E Rojas
Scott A Fulton
Jennifer L Franko
Clifford V Harding
W Henry Boom
University Hospitals Case Medical Center · USCase Western Reserve University · US

Funding

TUMOR METABOLISM PROGRAMP30CA043703 · NCI · CASE WESTERN RESERVE UNIVERSITY · PI MARK R CHANCE · 1987 to 2026
$142.3M
Regulation of macrophages by Mycobacterium tuberculosisR01AI034343 · NIAID · CASE WESTERN RESERVE UNIVERSITY · PI HARDING, CLIFFORD V · 1994 to 2017
$6.2M
HETEROGENEITY OF TCELLS IN M TUBERCULOSIS INFECTIONR01AI027243 · NIAID · CASE WESTERN RESERVE UNIVERSITY · PI BOOM, W. HENRY · 1989 to 2016
$5.5M
MYCOBACTERIUM TUBERCULOSIS INFECTION IN THE LUNGR01HL055967 · NHLBI · CASE WESTERN RESERVE UNIVERSITY · PI BOOM, W. HENRY · 1995 to 2010
$4.2M
CLASS II MHC TRANSPORT AND FUNCTIONR01AI035726 · NIAID · CASE WESTERN RESERVE UNIVERSITY · PI HARDING, CLIFFORD V · 1994 to 2010
$3.0M
M. tuberculosis lipoprotein-TLR2 interactionsR01AI069085 · NIAID · CASE WESTERN RESERVE UNIVERSITY · PI HARDING, CLIFFORD V · 2007 to 2011
$1.9M
NCI NIH HHS P30 CA043703NHLBI NIH HHS HL-55967NHLBI NIH HHS R01 HL055967NIAID NIH HHS AI034343NIAID NIH HHS AI035726NIAID NIH HHS AI069085NIAID NIH HHS AI-27243NIAID NIH HHS N01 AI070022NIAID NIH HHS N01-AI-70022NIAID NIH HHS R01 AI027243NIAID NIH HHS R01 AI034343NIAID NIH HHS R01 AI035726NIAID NIH HHS R01 AI069085
6 · The paper itself

Abstract

Immune evasion is required for Mycobacterium tuberculosis to survive in the face of robust adaptive CD4(+) T-cell responses. We have previously shown that M. tuberculosis can indirectly inhibit CD4(+) T cells by suppressing the major histocompatibility complex class II antigen-presenting cell function of macrophages. This study was undertaken to determine if M. tuberculosis could directly inhibit CD4(+) T-cell activation. Murine CD4(+) T cells were purified from spleens by negative immunoaffinity selection followed by flow sorting. Purified CD4(+) T cells were activated for 16 to 48 h with CD3 and CD28 monoclonal antibodies in the presence or absence of M. tuberculosis and its subcellular fractions. CD4(+) T-cell activation was measured by interleukin 2 production, proliferation, and expression of activation markers, all of which were decreased in the presence of M. tuberculosis. Fractionation identified that M. tuberculosis cell wall glycolipids, specifically, phosphatidylinositol mannoside and mannose-capped lipoarabinomannan, were potent inhibitors. Glycolipid-mediated inhibition was not dependent on Toll-like receptor signaling and could be bypassed through stimulation with phorbol 12-myristate 13-acetate and ionomycin. ZAP-70 phosphorylation was decreased in the presence of M. tuberculosis glycolipids, indicating that M. tuberculosis glycolipids directly inhibited CD4(+) T-cell activation by interfering with proximal T-cell-receptor signaling.

Indexed as

Lymphocyte ActivationAnimalsCD4-Positive T-LymphocytesCell ProliferationCells, CulturedCell WallFemaleFlow CytometryGlycolipidsHumansInterleukin-2MiceMycobacterium tuberculosisReceptors, Antigen, T-CellSignal TransductionSpleenGlycolipidsInterleukin-2Receptors, Antigen, T-Cell

Identifiers

PMID19651854
PMCPMC2747961
OpenAlexW2145640458

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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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.