Evidence map›Paper›PMID 22918468›Full record

ReviewNature reviews. Immunology2012

Why must T cells be cross-reactive?

Andrew K Sewell

Open access · bronzeAbstract readReview
In one paragraph

Review in Nature reviews. Immunology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 336 papers.

0numbers the graph read from it
0cells of the map it votes in
336citing papers in PubMed
8.3field-weighted citation impact, top 2% 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

336 citing papers in PubMed, 533 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. T Cell Thoughts.Immunological reviews · 2026
    Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Ensembles ofbioRxiv : the preprint server for biology · 2026
    Article
  16. Review
  17. Review
  18. Review
  19. Review
  20. Article

276 more citing papers are in PubMed but not listed here.

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

1 author at 1 institution in 1 country.

Andrew K SewellInstitute of Infection and Immunity, Cardiff University School of Medicine, Heath Park, Cardiff, UK. sewellak@cardiff.ac.uk
Cardiff University · GB

Funding

Biotechnology and Biological Sciences Research Council BB/H001085/1
6 · The paper itself

Abstract

Clonal selection theory proposed that individual T cells are specific for a single peptide-MHC antigen. However, the repertoire of αβ T cell receptors (TCRs) is dwarfed by the vast array of potential foreign peptide-MHC complexes, and a comprehensive system requires each T cell to recognize numerous peptides and thus be cross-reactive. This compromise on specificity has profound implications because the chance of any natural peptide-MHC ligand being an optimal fit for its cognate TCR is small, as there will almost always be more-potent agonists. Furthermore, any TCR raised against a specific peptide-MHC complex in vivo can only be the best available solution from the naive T cell pool and is unlikely to be the best possible solution from the substantially greater number of TCRs that could theoretically be produced. This 'systems view' of TCR recognition provides a plausible cause for autoimmune disease and substantial scope for multiple therapeutic interventions.

Indexed as

AnimalsAutoimmunityCross ReactionsHumansMajor Histocompatibility ComplexPeptidesProtein BindingReceptors, Antigen, T-CellT-LymphocytesPeptidesReceptors, Antigen, T-Cell

Identifiers

PMID22918468
PMCPMC7097784
OpenAlexW2049204549

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.