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Immune receptor editing: revise and select

M C Nussenzweig¹

¹Laboratory of Molecular Immunology, The Rockefeller University, Howard Hughes Medical Institute, New York, New York 10021, USA.

|January 6, 1999

Summary

Secondary antigen receptor gene recombination, or receptor editing, salvages self-reactive lymphocytes before negative selection. This process, crucial in developing T and B cells, shapes immune responses and was not predicted by earlier theories.

Area of Science:

Immunology
Molecular Biology
Cell Biology

Background:

Secondary antigen receptor gene recombination occurs in both developing and mature lymphocytes.
Receptor editing in developing lymphocytes involves altering receptor specificity in response to autoantigens.
This process salvages self-reactive cells, preventing their elimination via negative selection.

Purpose of the Study:

To explore the phenomenon of receptor editing in lymphocytes.
To understand how antigen-induced receptor specificity changes can be integrated into existing immunological theories.
To highlight the importance of V(D)J recombination in mature lymphocytes.

Main Methods:

The study discusses the concept of receptor editing based on existing immunological principles and literature.

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It references theoretical frameworks like the clonal selection theory and Jerne's suggestions.

The text implies a review and synthesis of knowledge regarding lymphocyte development and selection.

Main Results:

Receptor editing converts anti-self-reactive cells to non-self-reactive cells during lymphocyte development.
This mechanism salvages self-reactive clones before they undergo negative selection.
Antigen-induced changes in receptor specificity were not initially accounted for in clonal selection theory.

Conclusions:

Receptor editing can be incorporated into the clonal selection theory by considering a specific developmental stage.
While less is known about V(D)J recombination in mature lymphocytes, it likely influences immune responses.
Antigen-induced receptor selection plays a significant role in shaping the overall immune response.