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A quantitative measure for discriminating between self and non-self antigens in immune response

Yoshiki Kashimori1, Yoshihiro Ochi, Takeshi Kambara

  • 1Division of Bioinformatics, Department of Applied Physics and Chemistry, The University of Electro-Communications, Chofu, Tokyo, Japan. kashi@pc.uec.ac.jp

Bio Systems
|March 30, 2010
PubMed

Insights

A new theory explains lymphocyte behavior using

Area of Science:

  • Immunology
  • Cellular Biology
  • Theoretical Biology

Background:

  • Lymphocyte behavior is crucial for immune responses.
  • Understanding self-non-self discrimination is a key challenge in immunology.

Purpose of the Study:

  • To introduce a novel theoretical framework for lymphocyte-antigen interactions.
  • To explain the mechanism of self-tolerance and immune response.

Main Methods:

  • Introduced the concept of 'chronicity' as a quantitative measure of lymphocyte-antigen interactions.
  • Developed a model where chronicity regulates lymphocyte proliferation and tolerance.

Main Results:

  • Lymphocyte proliferation occurs when chronicity exceeds a lower threshold, leading to antigen destruction.
  • Tolerance is induced when chronicity exceeds an upper threshold, preventing self-antigen destruction.
  • Differential antigen interaction frequencies explain self-non-self discrimination.

Conclusions:

  • Chronicity is a key regulator of lymphocyte behavior and immune memory.
  • The proposed theory provides a unified mechanism for immune response and self-tolerance.
  • This model offers new insights into autoimmune diseases and immunotherapy.

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