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Related Experiment Videos

Platelet endothelial cell adhesion molecule (CD31)

H M DeLisser1, P J Newman, S M Albelda

  • 1Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia 19104.

Current Topics in Microbiology and Immunology
|January 1, 1993
PubMed
Summary
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Platelet endothelial cell adhesion molecule-1 (PECAM-1/CD31) is an Ig superfamily member involved in cell adhesion. Its functions in angiogenesis, wound healing, and inflammation are being actively researched.

Area of Science:

  • Immunology
  • Cell Biology
  • Vascular Biology

Background:

  • PECAM-1/CD31 is a cell adhesion molecule in the immunoglobulin superfamily.
  • It is widely distributed on vascular-associated cells.
  • Its specific ligands and full functional repertoire are still under investigation.

Purpose of the Study:

  • To explore the physiological functions of PECAM-1/CD31.
  • To investigate its role in angiogenesis, wound healing, and inflammation.
  • To understand the molecular mechanisms underlying PECAM-1/CD31 function.

Main Methods:

  • Utilized anti-PECAM-1/CD31 antibodies to study endothelial cell interactions.
  • Examined PECAM-1/CD31's influence on cell migration and leukocyte adhesion.
  • Considered the role of post-translational modifications like phosphorylation.

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Main Results:

  • Anti-PECAM-1/CD31 antibodies inhibit endothelial cell-cell contacts and affect cell migration.
  • PECAM-1/CD31 engagement augments integrin-mediated leukocyte adhesion to endothelium.
  • PECAM-1/CD31 is implicated in angiogenesis, wound healing, cardiovascular development, and inflammatory responses.

Conclusions:

  • PECAM-1/CD31 plays significant roles in vascular biology, including inflammation and angiogenesis.
  • Further research into its molecular properties will illuminate its functions in physiological processes.
  • Activation events, potentially involving cytoplasmic domain phosphorylation, are likely necessary for in vivo function.