Evidence map›Paper›PMID 17428310›Full record

ArticleImmunology2007

CD45-associated protein promotes the response of primary CD4 T cells to low-potency T-cell receptor (TCR) stimulation and facilitates CD45 association with CD3/TCR and lck.

David Leitenberg, Rustom Falahati, Dan Dan Lu, Akiko Takeda

Open access · greenAbstract read
In one paragraph

Article in Immunology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
0.7field-weighted citation impact, top 32% 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

14 citing papers in PubMed, 33 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

4 authors at 3 institutions in 1 country.

David LeitenbergDepartment of Microbiology, Immunology and Tropical Medicine, George Washington University Medical Center, Washington, DC 20037, USA. dLeit@gwu.edu
Rustom Falahati
Dan Dan Lu
Akiko Takeda
Washington University Medical Center · USGeorge Washington University · USNorthwestern University · US

Funding

CD45 REGULATION OF T LYMPHOCYTE ACTIVATIONR01AI042963 · NIAID · YALE UNIVERSITY · PI LEITENBERG, DAVID · 1999 to 2003
$689k
NIAID NIH HHS AI42963NIAID NIH HHS R01 AI042963
6 · The paper itself

Abstract

Although it is clear that the CD45 tyrosine phosphatase is required for efficient T-cell activation and T-cell development, the factors that regulate CD45 function remain uncertain. Previous data have indicated that there is an association of CD45 with CD4 and the T-cell receptor (TCR) complex controlled by the variable ectodomain of CD45 and, following activation, by high- and low-potency peptides. This suggests that controlling substrate access to CD45 may be an important regulatory mechanism during T-cell activation. In the present study we have examined the role of the transmembrane adapter-like molecule CD45-associated protein (CD45-AP) in regulating the association of CD45 with CD3/TCR and lck, and in regulating primary CD4(+) T-lymphocyte activation. In CD4(+) T cells from CD45-AP-deficient mice, coimmunoprecipitation of CD45 with the CD3/TCR complex, in addition to lck, is significantly reduced compared with wild-type T cells. Functionally, this correlates with a decreased proliferative response, a decrease in interleukin (IL)-2 production, and a decrease in calcium flux upon stimulation with a low-potency altered peptide ligand. However, the response of CD45-AP-deficient T cells to stimulation with a high-avidity agonist peptide was largely intact, except for a modest decrease in IL-2 production. These data suggest that CD45-AP promotes or stabilizes the association of CD45 with substrates and regulates the threshold of T-cell activation.

Indexed as

Adaptor Proteins, Signal TransducingAnimalsCalciumCD28 AntigensCD3 ComplexCD4-Positive T-LymphocytesCell ProliferationCells, CulturedInterleukin-2Intracellular Signaling Peptides and ProteinsLymphocyte ActivationMembrane ProteinsMiceMice, TransgenicReceptors, Antigen, T-CellAdaptor Proteins, Signal TransducingCalciumCD28 AntigensCD3 ComplexInterleukin-2Intracellular Signaling Peptides and ProteinsMembrane ProteinsPtprcap protein, mouseReceptors, Antigen, T-CellSh2d2a protein, mouse

Identifiers

PMID17428310
PMCPMC2265975
OpenAlexW1986644831

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.