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Updated: May 3, 2026

Mechanical Stimulation-induced Calcium Wave Propagation in Cell Monolayers: The Example of Bovine Corneal Endothelial Cells
Published on: July 16, 2013
Connexins, gap junctions and tissue invasion
Norah Defamie1, Amandine Chepied1, Marc Mesnil1
1Team IP2C, STIM laboratory, University of Poitiers, CNRS ERL 7368, 1 rue Georges Bonnet, B36, 86073 Poitiers Cedex9, France.
Abstract:
Formation of metastases negatively impacts the survival prognosis of cancer patients. Globally, if the various steps involved in their formation are relatively well identified, the molecular mechanisms responsible for the emergence of invasive cancer cells are still incompletely resolved. Elucidating what are the mechanisms that allow cancer cells to evade from the tumor is a crucial point since it is the first step of the metastatic potential of a solid tumor. In order to be invasive, cancer cells have to undergo transformations such as down-regulation of cell-cell adhesions, modification of cell-matrix adhesions and acquisition of proteolytic properties. These transformations are accompanied by the capacity to "activate" stromal cells, which may favor the motility of the invasive cells through the extracellular matrix. Since modulation of gap junctional intercellular communication is known to be involved in cancer, we were interested to consider whether these different transformations necessary for the acquisition of invasive phenotype are related with gap junctions and their structural proteins, the connexins. In this review, emerging roles of connexins and gap junctions in the process of tissue invasion are proposed.
Insights
Understanding how cancer cells invade tissues is key to improving patient survival. This review explores the role of connexins and gap junctions in cancer cell invasion and metastasis.
Area of Science:
- Oncology
- Cell Biology
- Molecular Biology
Background:
- Metastasis significantly worsens cancer patient survival.
- The molecular mechanisms driving cancer cell invasion remain incompletely understood.
- Cancer cell evasion from the primary tumor is the critical first step in metastasis.
Purpose of the Study:
- To investigate the relationship between gap junctions, connexins, and the acquisition of an invasive cancer cell phenotype.
- To explore the emerging roles of connexins and gap junctions in tissue invasion.
Main Methods:
- This is a review article, synthesizing existing research.
- Focuses on the molecular and cellular transformations associated with cancer cell invasion.
- Examines the known involvement of gap junctional intercellular communication in cancer.
Main Results:
- Cancer cell invasion involves down-regulation of cell-cell adhesion and modification of cell-matrix adhesion.
- Invasive cells acquire proteolytic properties and activate stromal cells to facilitate motility.
- Emerging evidence suggests connexins and gap junctions play a role in these invasive transformations.
Conclusions:
- Gap junctions and their protein components, connexins, are implicated in the development of cancer cell invasiveness.
- Further research into connexins and gap junctions may reveal new therapeutic targets for preventing metastasis.
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