C. L. Oakley Lecture (1991). Cell adhesion and epithelial differentiation

Area of Science:

• Cell Biology
• Developmental Biology
• Molecular Biology

Background:

• Epithelial tissue function relies on molecular mediators of cell cohesion and polarization.
• Distinct molecular families govern cell-cell and cell-substratum adhesion.
• Kidney epithelial differentiation serves as a model for studying these processes.

Purpose of the Study:

• To investigate the molecular mechanisms underlying renal epithelial differentiation.
• To identify key molecular events in epithelial tissue modeling and tumor formation.

Main Methods:

• Utilizing the kidney as a model system for epithelial differentiation.
• Analyzing the roles of cell adhesion molecules, laminin, and cadherins.
• Investigating the regulatory function of the Wilms' tumour anti-oncogene.

Main Results:

• Basal lamina assembly, including laminin, is essential for kidney epithelial differentiation.
• Cadherin-mediated intercellular adhesion is a key event in this process.
• The Wilms' tumour anti-oncogene regulates renal epithelial differentiation.
• Reduced cell adhesion molecule function accompanies tissue modeling and tumor formation.

Conclusions:

• Cell adhesion molecules and cadherin-mediated interactions are critical for epithelial differentiation.
• The Wilms' tumour anti-oncogene plays a significant regulatory role.
• Impaired cell adhesion is associated with aberrant tissue development and oncogenesis.