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Updated: Jun 29, 2026
09:47
Generation of Human Alloantigen-specific T Cells from Peripheral Blood
Published on: November 21, 2014
Tolerance without clonal expansion: self-antigen-expressing B cells program self-reactive T cells for future deletion
Friederike Frommer1, Tobias J A J Heinen, F Thomas Wunderlich
1I. Medical Department, Johannes Gutenberg-University Mainz, Obere Zahlbacher Str. 63, Mainz, Germany.
Journal of Immunology (Baltimore, Md. : 1950)
|October 4, 2008
Summary
B cells induce immune tolerance by interacting with T cells, causing T cells to express inhibitory molecules. This interaction prevents T cell proliferation and promotes cell death, aiding immune system balance.
Area of Science:
- Immunology
- Cell Biology
- Autoimmunity
Background:
- B cells are known to induce immunological tolerance in animal models.
- This tolerance leads to reduced immune responses and protection against autoimmune diseases.
Purpose of the Study:
- To investigate the mechanisms by which B cells interact with naive T cells.
- To understand how this interaction influences T cell behavior and immune regulation.
Main Methods:
- Co-culture of B cells and naive T cells.
- Analysis of T cell proliferation, expression of negative costimulatory molecules (PD-1, CTLA-4, BTLA, CD5), and susceptibility to apoptosis.
Main Results:
- B cell-T cell interaction triggers T cells, upregulating negative costimulatory molecules like PD-1 and CTLA-4.
- T cell proliferation was inhibited in a PD-1 and CTLA-4 dependent manner.
- T cells became more sensitive to antigen-induced cell death.
Conclusions:
- B cells play a crucial role in maintaining immune homeostasis.
- B cells contribute to the elimination of self-reactive T cells, preventing autoimmunity.
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