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Related Experiment Videos

Claudin-based barrier in simple and stratified cellular sheets.

Shoichiro Tsukita1, Mikio Furuse

  • 1Department of Cell Biology, Kyoto University Faculty of Medicine, Yoshida-Konoe, Sakyo-ku, Kyoto, Japan. htsukita@mfour.med.kyoto-u.ac.jp

Current Opinion in Cell Biology
|September 17, 2002
PubMed
Summary

Cellular sheets maintain homeostasis by sealing intercellular routes. Claudins, key cell adhesion molecules in tight junctions, are crucial for this sealing in vertebrate tissues.

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Area of Science:

  • Cellular Biology
  • Physiology
  • Molecular Biology

Background:

  • Multicellular organisms require isolation and compartmentalization of their internal environment for homeostasis.
  • Cellular sheets form essential barriers, necessitating sealed intercellular routes for proper function.

Purpose of the Study:

  • To investigate the role of claudins in intercellular sealing within cellular sheets.
  • To determine if claudins function in both simple and stratified cellular sheets.

Main Methods:

  • Analysis of tight junction components.
  • Investigation of cell adhesion molecules.
  • Examination of intercellular sealing in various vertebrate tissue types.

Main Results:

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  • Claudins, major cell adhesion molecules in tight junctions, were identified as critical for intercellular sealing.
  • This sealing function of claudins was observed in both simple and stratified cellular sheets.
  • The findings highlight the conserved role of claudins in barrier formation across different tissue architectures.

Conclusions:

  • Claudins are essential for establishing and maintaining the integrity of cellular barriers in vertebrates.
  • Tight junctions, mediated by claudins, play a fundamental role in organismal homeostasis through intercellular sealing.