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Related Experiment Videos

B-cell stimulation

R J Armitage1, M R Alderson

  • 1Department of Cellular Immunology, Immunex Research and Development Corporation, Seattle, WA 98101, USA.

Current Opinion in Immunology
|April 1, 1995
PubMed
Summary
This summary is machine-generated.

CD40 ligand (CD40L) drives T-cell dependent B-cell activation. However, non-T cells can also induce B-cell responses and immunoglobulin isotype switching, highlighting alternative immune activation pathways.

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Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Biology

Background:

  • CD40 ligand (CD40L) is crucial for T-cell dependent B-cell activation, proliferation, and immunoglobulin isotype switching.
  • Cytokines, in conjunction with CD40L, mediate these B-cell responses.
  • Some antigens can bypass the need for CD40L and T cells to stimulate B-cell activation and isotype switching.

Purpose of the Study:

  • To investigate the mechanisms of T-cell independent B-cell activation and immunoglobulin isotype switching.
  • To identify the non-T cell sources and roles of cytokines in these alternative immune responses.

Main Methods:

  • Analysis of B-cell activation and immunoglobulin isotype switching in response to various antigens.
  • Investigation of cytokine production by natural killer cells, macrophages, and mast cells.

Related Experiment Videos

  • Assessment of B-cell responses in the presence and absence of CD40L and T cells.

    • Main Results:

    • Certain antigens induce B-cell activation and immunoglobulin isotype switching independently of CD40L and T cells.
    • Cytokines produced by non-T cells, including natural killer cells, macrophages, and mast cells, play a significant role in T-cell independent B-cell responses.
    • These findings elucidate alternative pathways for adaptive immune activation.

    Conclusions:

    • Non-T cell-derived cytokines are critical mediators of T-cell independent B-cell activation and immunoglobulin isotype switching.
    • This highlights the complex and multifaceted nature of immune regulation.
    • Understanding these pathways is essential for developing novel immunotherapies.