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Structure, function, and regulation of cellular tight junctions.

E E Schneeberger1, R D Lynch

  • 1Department of Pathology, Massachusetts General Hospital, Boston 02114.

The American Journal of Physiology
|June 1, 1992
PubMed
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The tight junction (TJ) is a dynamic cellular structure crucial for barrier function. Its assembly and regulation involve complex biochemical events, but its precise composition remains unknown, posing a challenge for cell biologists.

Area of Science:

  • Cell Biology
  • Biochemistry
  • Physiology

Background:

  • The tight junction (TJ) is a dynamic structure regulated by the cytoskeleton.
  • TJ assembly is triggered by cellular interactions and Ca2+, initiating a cascade of biochemical events.
  • TJs function as barriers and fences in epithelial and endothelial cells.

Purpose of the Study:

  • To investigate the mechanisms of TJ assembly and regulation.
  • To understand the biochemical events underlying TJ formation.
  • To identify the molecular composition and genes of TJ elements.

Main Methods:

  • The study focuses on the biochemical and regulatory mechanisms of TJ assembly.
  • Investigates cellular interactions and Ca2+-dependent signaling pathways.

Related Experiment Videos

  • Characterizes the dynamic nature and functional roles of TJs.

    • Main Results:

    • TJ assembly involves a complex cascade of biochemical events.
    • The precise composition of the TJ network remains undefined.
    • The TJ requires rapid and coordinated responses to physiological and pathological challenges.

    Conclusions:

    • Understanding TJ assembly and regulation is crucial for cell biology.
    • Defining the TJ's biochemical composition and genes is essential for further research.
    • The TJ remains an elusive but important target for cell biologists.