Evidence map›Paper›PMID 19076726›Full record

ArticleBritish journal of pharmacology2009

In vitro induction of T cells that are resistant to A2 adenosine receptor-mediated immunosuppression.

Akio Ohta, J Kjaergaard, S Sharma, M Mohsin, N Goel, M Madasu, E Fradkov, Akiko Ohta, M Sitkovsky

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.5field-weighted citation impact, top 20% 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

17 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
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  5. AJournal of immunology (Baltimore, Md. : 1950) · 2018
    Article
  6. Purinergic regulation of the immune system.Nature reviews. Immunology · 2016
    Review
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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

9 authors at 1 institution in 1 country.

Akio OhtaNew England Inflammation and Tissue Protection Institute, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA. a.ohta@neu.edu
J Kjaergaard
S Sharma
M Mohsin
N Goel
M Madasu
E Fradkov
Akiko Ohta
M Sitkovsky
Northeastern University · US

Funding

Cancer Immunotherapy by Targeting A2 Adenosine ReceptorR01CA111985 · NCI · NORTHEASTERN UNIVERSITY · PI SITKOVSKY, MICHAIL · 2006 to 2016
$2.7M
Mechanisms of Tumor Protection for T Cells by HypoxiaR01CA112561 · NCI · NORTHEASTERN UNIVERSITY · PI SITKOVSKY, MICHAIL · 2005 to 2009
$1.5M
Hyperbaric Oxygenation May Increase Lung InjuryR21AT002788 · NCCIH · NORTHEASTERN UNIVERSITY · PI SITKOVSKY, MICHAIL · 2006 to 2007
$387k
NCCIH NIH HHS AT 002788NCCIH NIH HHS R21 AT002788NCI NIH HHS CA 111985NCI NIH HHS CA 112561NCI NIH HHS R01 CA111985NCI NIH HHS R01 CA112561
6 · The paper itself

Abstract

background and purposeThe increased levels of extracellular adenosine in inflamed tissues down-regulate activated immune cells via the A(2A) adenosine receptor. This A(2A) adenosine receptor-mediated immunosuppression is a disqualifying obstacle in cancer immunotherapy as it protects cancerous tissues from adoptively transferred anti-tumour T cells. The aim of this study was to test whether the negative selection of T cells will produce T cells that are resistant to inhibition by extracellular adenosine. EXPERIMENTAL APPROACH: Cytotoxic T lymphocytes (CTL) were developed by mixed lymphocyte culture in the presence or absence of the adenosine receptor agonist 5'-N-ethylcarboxamidoadenosine (NECA). The sensitivity of CTL to adenosine analogues was characterized by cAMP induction, interferon-gamma production and cytotoxicity. KEY

resultsCTL that could proliferate even in the presence of NECA were less susceptible to inhibition by A(2A) adenosine receptor agonists, as shown by a much smaller accumulation of cAMP and less inhibition of interferon-gamma production compared with control CTL. The successful protocol to produce CTL that are both resistant to adenosine-mediated immunosuppression and maintain strong cytotoxicity and interferon-gamma secretion required NECA to be added only during the expansion stage after the establishment of CTL. In contrast, the priming of resting T cells in the presence of NECA resulted in T cells with impaired effector functions. CONCLUSIONS AND IMPLICATIONS: Adenosine-resistant effector T cells were successfully obtained by exposure of activated T cells to NECA. These in vitro studies form the basis for future attempts to produce anti-tumour T cells that are more effective in adoptive immunotherapy.

Indexed as

Immune ToleranceAdenosineAdenosine-5'-(N-ethylcarboxamide)Adenosine A2 Receptor AgonistsAnimalsCell Line, TumorCyclic AMPCytotoxicity, ImmunologicExtracellular SpaceInterferon-gammaLymphocyte ActivationMiceMice, Inbred C57BLMice, Inbred DBAReceptor, Adenosine A2AReceptor, Adenosine A2BAdenosineAdenosine-5'-(N-ethylcarboxamide)Adenosine A2 Receptor AgonistsCyclic AMPInterferon-gammaReceptor, Adenosine A2AReceptor, Adenosine A2B

Identifiers

PMID19076726
PMCPMC2697837
OpenAlexW2036018074

What OpenQuestion holds

Textmetadata
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.