Evidence map›Paper›PMID 29087297›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2017

Early T cell receptor signals globally modulate ligand:receptor affinities during antigen discrimination.

Rafal M Pielak, Geoff P O'Donoghue, Jenny J Lin, Katherine N Alfieri, Nicole C Fay, Shalini T Low-Nam, Jay T Groves

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed, 1 pooled it
–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

51 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Parallel reactions on a single T cell receptor offer a robust kinetic proofreading mechanism.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Article
  7. Article
  8. Differential roles of kinetic on- and off-rates in T-cell receptor signal integration revealed with a modified Fab'-DNA ligand.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Rapid optogenetic clustering of a cytoplasmic BcLOV4 variant.bioRxiv : the preprint server for biology · 2023
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
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.

Rafal M PielakDepartment of Chemistry, University of California, Berkeley, CA 94720.
Geoff P O'DonoghueDepartment of Chemistry, University of California, Berkeley, CA 94720.
Jenny J LinDepartment of Chemistry, University of California, Berkeley, CA 94720.
Katherine N AlfieriDepartment of Chemistry, University of California, Berkeley, CA 94720.
Nicole C FayDepartment of Chemistry, University of California, Berkeley, CA 94720.
Shalini T Low-NamDepartment of Chemistry, University of California, Berkeley, CA 94720.
Jay T GrovesDepartment of Chemistry, University of California, Berkeley, CA 94720; jtgroves@lbl.gov.

Funding

Understand the metabolic fitness of naïve T cellsP01AI091580 · NIAID · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI ARTHUR WEISS · 2011 to 2026
$31.1M
NIAID NIH HHS P01 AI091580
6 · The paper itself

Abstract

Antigen discrimination by T cells occurs at the junction between a T cell and an antigen-presenting cell. Juxtacrine binding between numerous adhesion, signaling, and costimulatory molecules defines both the topographical and lateral geometry of this cell-cell interface, within which T cell receptor (TCR) and peptide major histocompatibility complex (pMHC) interact. These physical constraints on receptor and ligand movement have significant potential to modulate their molecular binding properties. Here, we monitor individual ligand:receptor binding and unbinding events in space and time by single-molecule imaging in live primary T cells for a range of different pMHC ligands and surface densities. Direct observations of pMHC:TCR and CD80:CD28 binding events reveal that the in situ affinity of both pMHC and CD80 ligands for their respective receptors is modulated by the steady-state number of agonist pMHC:TCR interactions experienced by the cell. By resolving every single pMHC:TCR interaction it is evident that this cooperativity is accomplished by increasing the kinetic on-rate without altering the off-rate and has a component that is not spatially localized. Furthermore, positive cooperativity is observed under conditions where the T cell activation probability is low. This TCR-mediated feedback is a global effect on the intercellular junction. It is triggered by the first few individual pMHC:TCR binding events and effectively increases the efficiency of TCR scanning for antigen before the T cell is committed to activation.

Indexed as

Major Histocompatibility ComplexAnimalsAntigensB7-1 AntigenCD28 AntigensGene ExpressionLigandsLipid BilayersLymphocyte ActivationMicePrimary Cell CultureProtein BindingReceptors, Antigen, T-CellSignal TransductionSingle-Cell AnalysisT-LymphocytesAntigensB7-1 AntigenCD28 AntigensLigandsLipid BilayersReceptors, Antigen, T-Cellimmune synapsepeptide discriminationsignal transductionsingle-molecule ligand:receptor assayT cell receptor

Identifiers

PMID29087297
PMCPMC5699024

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.