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Related Experiment Videos

Regulatory mechanisms underlying T cell integrin receptor function

J L Mobley1, P J Reynolds, Y Shimizu

  • 1Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor 48109.

Seminars in Immunology
|August 1, 1993
PubMed
Summary

Lymphocyte adhesion molecules, like integrins, are precisely regulated through various mechanisms. This ensures transient cell interactions with the extracellular environment are controlled for specific immune responses.

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Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Biology

Background:

  • Lymphocytes interact with their environment via adhesion molecules.
  • These interactions must be transient and precisely regulated.
  • Integrin receptors are key adhesion molecules on lymphocytes.

Purpose of the Study:

  • To illustrate the regulatory mechanisms of lymphocyte adhesion molecule function.
  • To highlight how integrin receptor function is controlled.

Main Methods:

  • Review of studies on integrin receptor regulation.
  • Analysis of known mechanisms controlling adhesion molecule activity.

Main Results:

  • Adhesion molecule function is regulated by activation-dependent changes.

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  • Expression levels change with cell differentiation.
  • Cell-specific binding differences exist.
  • The same integrin can bind distinct ligands.

    • Conclusions:

    • Multiple mechanisms ensure precise regulation of lymphocyte adhesion.
    • These regulatory mechanisms allow specific interactions with various ligands and counter-receptors.