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Related Experiment Videos

Glimpses into the balance between immunity and self-tolerance

C C Goodnow1

  • 1Howard Hughes Medical Institute, Stanford University School of Medicine, CA 94305-5428, USA.

Ciba Foundation Symposium
|January 1, 1997
PubMed
Summary

Maintaining self-tolerance involves sophisticated immune system checkpoints that delete self-reactive clones. These mechanisms balance tolerance with the need for diverse immune responses against infection, with genetic mutations offering insights into their function and failure in autoimmune disease.

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Area of Science:

  • Immunology
  • Genetics
  • Autoimmunity

Background:

  • Self-tolerance is crucial for preventing autoimmune disease but requires balancing with immune diversity for fighting infections.
  • Clonal selection mechanisms, including clonal deletion and anergy, are central to maintaining self-tolerance.
  • Genetic manipulation in mice has advanced understanding of these complex processes.

Purpose of the Study:

  • To elucidate the sophisticated mechanisms of self-tolerance.
  • To understand how immune system checkpoints balance self-tolerance with the need for immune diversity.
  • To investigate the genetic underpinnings of these checkpoints and their failure in autoimmune disease.

Main Methods:

  • Genetic manipulation of mice.
  • Analysis of spontaneous and induced mutations (e.g., Fas, PTP1C, CD45).

Related Experiment Videos

  • Studying clonal selection, deletion, and anergy pathways.

    • Main Results:

    • Self-reactive immune clones are eliminated or suppressed through multiple culling checkpoints during antibody production.
    • These checkpoints finely balance the repertoire holes for self-tolerance against the need for diverse immune responses.
    • Specific mutations provide initial insights into the molecular circuitry of these checkpoints.

    Conclusions:

    • The immune system employs intricate, multi-step checkpoints to ensure self-tolerance.
    • Understanding these checkpoints is key to addressing the failure of self-tolerance in autoimmune diseases.
    • Further genetic analysis, aided by the genome project, is essential for detailed insights.