Single cell and spheroid collagen type I invasion assay

Area of Science:

• Oncology
• Biotechnology
• Biophysics

Background:

• Tumor invasion is a critical process in cancer progression, driven by cancer cells interacting with the tumor microenvironment.
• Infiltration of dense collagen type I extracellular matrix is essential for cancer cell invasion.
• Current models often lack the resolution to capture dynamic cellular changes during invasion.

Purpose of the Study:

• To develop and validate a novel, membrane-free assay for studying cancer cell invasion through native collagen type I matrices.
• To enable real-time monitoring of cellular morphology and F-actin organization during invasion.
• To provide a reproducible and operator-independent platform for preclinical drug validation.

Main Methods:

• Utilized complementary single-cell and spheroid-based models in a membrane-free setup.
• Employed native collagen type I matrices for realistic extracellular matrix simulation.
• Integrated computerized quantification for data analysis.
• Allowed for real-time monitoring of cell morphology and F-actin organization using fluorescent probes.

Main Results:

• The developed assay preserves cell morphology, allowing detailed observation of invasion dynamics.
• Computerized quantification ensures high reproducibility and operator independence.
• The assay is versatile with flexible kinetic endpoints and compatibility with fluorescent probes.
• Demonstrated potential for preclinical validation of small-molecule inhibitors targeting cancer invasion.

Conclusions:

• The single-cell and spheroid invasion models offer a robust platform for studying cancer cell infiltration.
• This assay facilitates the assessment of anti-invasion therapies by providing reliable, quantitative data.
• The methodology supports efficient preclinical validation of therapeutic strategies targeting tumor invasion.