Adhesion-driven invasion: Disentangling the interplay between cell-cell and cell-matrix interactions in cancer cell...

Area of Science:

• Cell Biology
• Biophysics
• Computational Biology

Background:

• Metastasis involves cancer cell dissemination into the extracellular matrix (ECM).
• Cell-cell adhesion, cell-matrix adhesion, and traction forces influence cancer cell invasion.
• Understanding the interplay of these factors is crucial for deciphering collective cell invasion mechanisms.

Purpose of the Study:

• To investigate how variations in cell adhesion and traction influence invasive cell behavior.
• To disentangle the roles of cell-cell and cell-matrix adhesion in collective cancer cell invasion.
• To develop a computational model predicting invasion based on adhesion and traction parameters.

Main Methods:

• Integrin knockout experiments were performed on Hs578T and 4T1 breast cancer cell lines.
• A computational cellular Potts model was employed to simulate cell behavior.
• Model parameters for cell-cell and cell-matrix adhesion were tuned to match experimental observations.

Main Results:

• Strong cell-matrix interactions were found to promote invasion.
• Strong cell-cell adhesion was linked to the formation and dissemination of multicellular clusters.
• A threshold for invasion was identified, and tumor branching was correlated with invasive potential.

Conclusions:

• Tumor morphology, specifically branching, may serve as a predictive indicator of metastatic potential.
• Combining experimental data with computational modeling provides novel insights into cancer cell migration mechanisms.
• Adhesion properties and traction forces are key determinants of collective cancer cell invasion and metastasis.