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Related Experiment Videos

Desmosomal adhesion regulates epithelial morphogenesis and cell positioning.

S K Runswick1, M J O'Hare, L Jones

  • 1School of Biological Sciences, University of Manchester, 3.239 Stopford Building, Oxford Road, Manchester M13 9PT, UK.

Nature Cell Biology
|September 5, 2001
PubMed
Summary
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Desmosomal adhesion is crucial for epithelial tissue development and cell positioning. Blocking desmosomal cadherins disrupts mammary gland morphogenesis and cell sorting, revealing a broader role in tissue regulation.

Area of Science:

  • Cell Biology
  • Developmental Biology
  • Tissue Engineering

Background:

  • Desmosomes are vital intercellular junctions maintaining epithelial tissue architecture.
  • Their role in complex developmental processes like morphogenesis and cell positioning is increasingly recognized.

Purpose of the Study:

  • To investigate the function of desmosomal adhesion in epithelial morphogenesis.
  • To explore the role of desmosomes in cell-type-specific positioning within epithelial tissues.

Main Methods:

  • Utilizing blocking peptides targeting cell adhesion recognition (CAR) sites of desmosomal cadherins.
  • Analyzing alveolar morphogenesis in mammary epithelial cells.
  • Assessing positional sorting of luminal and myoepithelial cells in reaggregated cell cultures.

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Main Results:

  • Blocking desmosomal CAR sites inhibited alveolar morphogenesis in mammary epithelial cells.
  • Desmosomal CAR-site peptides disrupted the positional sorting of luminal and myoepithelial cells.
  • Desmosomal cadherins demonstrated comparable involvement in epithelial morphoregulation to E-cadherin.

Conclusions:

  • Desmosomal adhesion plays a significant role in epithelial morphogenesis.
  • Desmosomes are important for regulating cell-type-specific positioning within epithelial tissues.
  • The function of desmosomal adhesion in morphogenesis is broader than previously understood.