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Related Experiment Videos

The CD40/CD154 receptor/ligand dyad.

U Schönbeck1, P Libby

  • 1Cardiovascular Medicine, Department of Medicine, Brigham & Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA. uschoenbeck@rics.bwh.harward.edu

Cellular and Molecular Life Sciences : CMLS
|March 7, 2001
PubMed
Summary
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The CD40/CD154 interaction, once thought limited to lymphocytes, is now known to involve many cell types. This signaling pathway plays a crucial role in immune regulation and various human diseases.

Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Medicine

Background:

  • The CD40 receptor and its ligand CD154 were traditionally considered to function primarily in lymphocyte communication for humoral immune responses.
  • Emerging evidence indicates broader expression and function beyond lymphocytes.

Purpose of the Study:

  • To review the synthesis and structure of CD40.
  • To outline CD154/CD40 signaling pathways.
  • To emphasize the expanded role of the CD40/CD154 dyad in immunoregulatory processes and human diseases.

Main Methods:

  • Literature review focusing on CD40/CD154 expression and function.
  • Synthesis of current research on CD40/CD154 signaling pathways.
  • Analysis of CD40/CD154 involvement in various diseases.

Related Experiment Videos

Main Results:

  • CD40 and CD154 are expressed on a wide range of non-lymphocytic cells, including myeloid and non-hematopoietic cells.
  • CD40 ligation triggers diverse immune and inflammatory responses (e.g., adhesion molecules, cytokines, apoptosis).
  • CD40 signaling is implicated in the pathogenesis of chronic inflammatory conditions.

Conclusions:

  • The CD40/CD154 dyad is a critical mediator beyond lymphocyte interactions.
  • Its role extends to diverse immunoregulatory functions.
  • Understanding CD40/CD154 signaling is vital for addressing numerous prevalent human diseases.