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Related Experiment Videos

Is CTLA-4 a master switch for peripheral T cell tolerance?

J A Bluestone1

  • 1Ben May Institute for Cancer Research, Committee on Immunology, University of Chicago, IL 60615, USA. jbluest@immunology.uchicago.edu

Journal of Immunology (Baltimore, Md. : 1950)
|March 1, 1997
PubMed
Summary
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The CD28/CTLA-4 and B7 cell surface molecules regulate T cell responses. CTLA-4 signaling is crucial for peripheral self-tolerance and normal T cell immunity.

Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Biology

Background:

  • CD28/CTLA-4 and B7 families are cell surface molecules.
  • These molecules regulate T cell signaling and peripheral T cell responses.
  • CD28/B7 costimulation is vital for T cell development and maintenance.

Purpose of the Study:

  • To examine the role of CTLA-4 signaling in immune response regulation.
  • To hypothesize the function of CTLA-4/B7 interaction in self-tolerance and T cell immunity.

Main Methods:

  • Literature review and analysis of prevailing data on CTLA-4 and B7 interactions.
  • Examination of signaling pathways regulated by CD28/CTLA-4 and B7 families.

Main Results:

Related Experiment Videos

  • CD28/B7-mediated costimulation promotes T cell responses.
  • CTLA-4 engagement with B7 ligands down-regulates immune responses.
  • CTLA-4 signaling impacts the initiation and progression of immune responses.

    • Conclusions:

    • CTLA-4/B7 interaction is essential for establishing peripheral self-tolerance.
    • CTLA-4 signaling plays a critical role in regulating normal T cell immunity.