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Occludin: structure, function and regulation.

Gemma J Feldman1, James M Mullin, Michael P Ryan

  • 1Department of Pharmacology, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland.

Advanced Drug Delivery Reviews
|April 12, 2005
PubMed
Summary
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Epithelial barriers rely on tight junctions (TJs), with occludin as a key protein. Understanding occludin regulation, particularly phosphorylation, is vital for treating diseases linked to TJ disruption.

Area of Science:

  • Cell biology
  • Molecular biology
  • Physiology

Background:

  • Epithelial and endothelial barriers are crucial for animal life.
  • The tight junction (TJ) complex is a fundamental component of these cellular barriers.
  • Occludin is a major protein constituent of the TJ.

Purpose of the Study:

  • To review the structure and regulation of occludin.
  • To highlight the role of occludin phosphorylation in TJ function.
  • To explore therapeutic strategies targeting occludin in disease.

Main Methods:

  • Literature review of occludin structure and function.
  • Analysis of phosphorylation/dephosphorylation mechanisms.
  • Discussion of disease implications and therapeutic targets.

Related Experiment Videos

Main Results:

  • The structure of occludin, including gene splice variants, is well-defined.
  • Phosphorylation and dephosphorylation are critical regulatory mechanisms for occludin and TJs.
  • Dysregulation of occludin is implicated in various diseases.

Conclusions:

  • Occludin's structure and regulatory pathways are understood.
  • Disrupted occludin regulation contributes to disease pathogenesis.
  • Modulating occludin levels presents a potential therapeutic avenue.