EpCAM as Modulator of Tissue Plasticity

Area of Science:

• Biochemistry
• Molecular Biology
• Cancer Biology

Background:

• Epithelial Cell Adhesion Molecule (EpCAM) is highly expressed in carcinomas, correlating with poor prognosis.
• EpCAM's proposed function as a cell adhesion molecule is challenged by its diverse signaling roles.

Purpose of the Study:

• To review current data on EpCAM's signaling functions.
• To explore EpCAM's role in tissue plasticity and cancer invasion.

Main Methods:

• Literature review of existing studies on EpCAM.
• Analysis of EpCAM's impact on cell signaling pathways, specifically PKC.
• Examination of EpCAM's influence on myosin contractility and tissue plasticity.

Main Results:

• EpCAM regulates cell adhesion and migration, crucial for embryonic development and intestinal homeostasis.
• EpCAM represses myosin contractility through a PKC signaling cascade, not via direct adhesion.
• This mechanism grants EpCAM the ability to promote tissue plasticity.

Conclusions:

• EpCAM's function in promoting tissue plasticity is key to its role in cancer invasion.
• Understanding EpCAM's signaling mechanisms offers insights into cancer progression and therapeutic strategies.