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Related Experiment Videos

The maintenance of self-tolerance

K J Lafferty1, R G Gill

  • 1Barbara Davis Center for Childhood Diabetes, University of Colorado Health Sciences Center, Denver 80262.

Immunology and Cell Biology
|June 1, 1993
PubMed
Summary

Two signal models for lymphocyte activation, based on random receptor diversity, face challenges explaining self-tolerance. Abandoning associative recognition prevents explaining signal one anergy within these models.

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Area of Science:

  • Immunology
  • Molecular Biology
  • Computational Biology

Background:

  • Lymphocyte activation models often rely on the Talmage/Burnet concept of random receptor diversity generation.
  • Individual lymphocytes are thought to express a single receptor dictating specificity.

Observation:

  • The study examines two signal models for lymphocyte activation.
  • These models are evaluated based on their ability to explain self-tolerance maintenance.

Findings:

  • Models abandoning associative recognition struggle to incorporate signal one anergy (or deletion).
  • This limitation impacts the explanation of self-tolerance according to the Bretscher/Cohn theory.

Implications:

  • Revisiting associative recognition may be crucial for robust lymphocyte activation and self-tolerance models.
  • Further research is needed to reconcile receptor diversity, signal transduction, and immune tolerance.

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