Changes in regulation of cell-cell adhesion during tumor transformation

N A Gloushankova1

  • 1Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, 115478, Russia. natglu@hotmail.com.

Biochemistry. Biokhimiia
|August 19, 2008
PubMed

Insights

Cadherin cell adhesion is vital for tissue integrity, regulated by proteins like beta-catenin. Disruptions in these adhesion processes can drive tumor progression.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Cancer Research

Background:

  • Cadherin-mediated cell-cell adhesion is crucial for maintaining tissue integrity.
  • Adherens junctions are dynamic structures involving cadherins, beta-catenin, p120, and the actin cytoskeleton.
  • Small GTPases, including Rho family members and Rap1, are key regulators of cell adhesion.

Purpose of the Study:

  • To summarize the regulatory mechanisms of cadherin-mediated cell-cell adhesion.
  • To highlight the role of specific proteins and signaling pathways in maintaining tissue integrity.
  • To discuss how disruptions in cell adhesion contribute to tumor progression.

Main Methods:

  • Literature review of cell adhesion mechanisms.
  • Analysis of molecular interactions within adherens junctions.
  • Examination of signaling pathways regulating cell-cell adhesion.
  • Review of genetic and molecular alterations associated with cancer.

Main Results:

  • Cadherin interactions with beta-catenin, p120, and actin cytoskeleton regulate adherens junction dynamics.
  • Rho GTPases and Rap1 are central to the formation and maintenance of cell-cell adhesion.
  • Aberrant signaling, E-cadherin repression, N-cadherin expression, and beta-catenin dysfunction promote tumor progression.

Conclusions:

  • Proper cadherin function is essential for tissue integrity.
  • Dysregulation of cell adhesion pathways is a hallmark of cancer progression.
  • Targeting these pathways may offer therapeutic strategies for cancer.

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