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Related Experiment Videos

Junctional adhesion molecule 1 (JAM-1).

U P Naik1, K Eckfeld

  • 1University of Delaware, Department of Biological Sciences, Newark, DE 19716, USA.

Journal of Biological Regulators and Homeostatic Agents
|April 7, 2004
PubMed
Summary
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Junctional adhesion molecule 1 (JAM-1) is a key protein regulating cell junctions and immune cell movement. Its diverse roles in cell adhesion and signaling highlight its importance in various biological processes.

Area of Science:

  • Cell Biology
  • Immunology
  • Molecular Biology

Background:

  • Junctional adhesion molecule 1 (JAM-1) is the first identified member of the JAM protein family.
  • JAM-1 localizes to tight junctions in epithelial and endothelial cells.
  • JAM-2 and JAM-3 are related proteins with structural and sequence similarities to JAM-1.

Purpose of the Study:

  • To review the diverse functions of JAM-1.
  • To highlight JAM-1's role in maintaining junctional integrity and permeability.
  • To explore JAM-1's involvement in leukocyte transmigration and platelet function.

Main Methods:

  • Literature review and analysis of existing studies on JAM-1.
  • Examination of JAM-1's homophilic and heterophilic binding interactions.

Related Experiment Videos

  • Investigation of JAM-1's interactions with integrin LFA-1 and its role as a viral receptor.

    • Main Results:

    • JAM-1 regulates epithelial and endothelial cell junctional integrity and permeability through homophilic interactions.
    • JAM-1 acts as a ligand for integrin LFA-1, mediating leukocyte transmigration.
    • JAM-1 functions as a platelet receptor, influencing adhesion and aggregation, and is a reovirus receptor.

    Conclusions:

    • JAM-1 plays multifaceted roles in cellular functions beyond its initial description.
    • Understanding JAM-1's mechanisms is crucial for insights into immune responses, cell adhesion, and viral entry.
    • JAM-1 is a significant molecule with potential implications in various physiological and pathological processes.