Evidence map›Paper›PMID 25383949›Full record

ArticlePloS one2014

TCR triggering by pMHC ligands tethered on surfaces via poly(ethylene glycol) depends on polymer length.

Zhengyu Ma, David N LeBard, Sharon M Loverde, Kim A Sharp, Michael L Klein, Dennis E Discher, Terri H Finkel

Abstract read
In one paragraph

Article in PloS one, 2014. 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
–field-weighted citation impact
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.

  1. Article
  2. Review
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  12. Review
  13. Article
  14. Targeting CD4Biomacromolecules · 2020
    Article
  15. Article
  16. Article
  17. Article
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

7 authors.

Zhengyu MaDepartment of Biomedical Research, Nemours/A.I. duPont Hospital for Children, Wilmington, Delaware, United States of America.
David N LeBardDepartment of Chemistry, Yeshiva University, New York, New York, United States of America.
Sharon M LoverdeDepartment of Chemistry, College of Staten Island, City University of New York, Staten Island, New York, United States of America.
Kim A SharpDepartment of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America.
Michael L KleinInstitute for Computational Molecular Science and Department of Chemistry, Temple University, Philadelphia, Pennsylvania, United States of America.
Dennis E DischerDepartment of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America.
Terri H FinkelDepartment of Pediatrics, Nemours Children's Hospital, Orlando, Florida, United States of America; Department of Biomedical Sciences, University of Central Florida College of Medicine, Orlando, Florida, United States of America.

Funding

Virus & Reservoirs CoreP30AI045008 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI James L. Riley · 1999 to 2026
$78.6M
Center for Pediatric ResearchP20GM103464 · NIGMS · NEMOURS CHILDREN'S HOSPITAL, DELAWARE · PI SHAFFER, THOMAS H · 2012 to 2014
$5.6M
Signal Initiation from the T-cell Antigen Receptor by Mechanical ForceR21AI078387 · NIAID · CHILDREN'S HOSP OF PHILADELPHIA · PI FINKEL, TERRI H, JANMEY, PAUL A · 2008 to 2009
$488k
Understanding HIV escape using atomic force microscopyR21AI087516 · NIAID · CHILDREN'S HOSP OF PHILADELPHIA · PI DISCHER, DENNIS E., FINKEL, TERRI H · 2010 to 2011
$474k
Multiscale Simulation of Biodegradable Diblock Copolymers for Drug DeliveryF32CA134157 · NCI · UNIVERSITY OF PENNSYLVANIA · PI LOVERDE, SHARON MARIE · 2008 to 2010
$123k
NCI NIH HHS F32 CA134157NIAID NIH HHS 1R21 AI078387NIAID NIH HHS 1R21 AI087516NIAID NIH HHS 2-P30-AI-045008-11NIAID NIH HHS P30 AI045008NIAID NIH HHS R21 AI078387NIAID NIH HHS R21 AI087516NIGMS NIH HHS P20 GM103464NIGMS NIH HHS P20GM103464
6 · The paper itself

Abstract

Antigen recognition by T cells relies on the interaction between T cell receptor (TCR) and peptide-major histocompatibility complex (pMHC) at the interface between the T cell and the antigen presenting cell (APC). The pMHC-TCR interaction is two-dimensional (2D), in that both the ligand and receptor are membrane-anchored and their movement is limited to 2D diffusion. The 2D nature of the interaction is critical for the ability of pMHC ligands to trigger TCR. The exact properties of the 2D pMHC-TCR interaction that enable TCR triggering, however, are not fully understood. Here, we altered the 2D pMHC-TCR interaction by tethering pMHC ligands to a rigid plastic surface with flexible poly(ethylene glycol) (PEG) polymers of different lengths, thereby gradually increasing the ligands' range of motion in the third dimension. We found that pMHC ligands tethered by PEG linkers with long contour length were capable of activating T cells. Shorter PEG linkers, however, triggered TCR more efficiently. Molecular dynamics simulation suggested that shorter PEGs exhibit faster TCR binding on-rates and off-rates. Our findings indicate that TCR signaling can be triggered by surface-tethered pMHC ligands within a defined 3D range of motion, and that fast binding rates lead to higher TCR triggering efficiency. These observations are consistent with a model of TCR triggering that incorporates the dynamic interaction between T cell and antigen-presenting cell.

Indexed as

AnimalsHistocompatibility AntigensLigandsMiceMolecular Dynamics SimulationMolecular WeightPeptidesPolyethylene GlycolsReceptors, Antigen, T-CellSurface PropertiesHistocompatibility AntigensLigandsPeptidesPolyethylene GlycolsReceptors, Antigen, T-Cell

Identifiers

PMID25383949
PMCPMC4226474

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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.