Matrisome provides a supportive microenvironment for oral squamous cell carcinoma progression

Area of Science:

• Oncology
• Tissue Engineering
• Proteomics
• Immunology

Background:

• Oral squamous cell carcinoma (OSCC) is a prevalent head and neck cancer.
• The role of the tumor extracellular matrix (ECM) in OSCC progression remains largely unknown.
• Understanding tumor ECM is crucial for developing effective therapeutic strategies.

Purpose of the Study:

• To investigate the functional differences between normal and tumor ECM in OSCC.
• To elucidate the impact of tumor ECM on OSCC cell behavior and immune cell polarization.
• To identify key molecular components within the tumor ECM that drive OSCC progression.

Main Methods:

• Decellularization technique applied to remodel ECM.
• Proteomic analysis (LC-MS/MS) to characterize normal versus tumor ECM.
• Co-culture experiments with OSCC cells and macrophages using ECM scaffolds.

Main Results:

• Proteomics identified unique proteins in tumor ECM, associated with metabolic regulation and tumor immunity.
• OSCC cells cultured with tumor ECM exhibited altered proliferation, apoptosis, and migration.
• Tumor ECM induced an anti-inflammatory macrophage phenotype, characterized by increased IL-10 and CD68 expression.

Conclusions:

• Tumor ECM plays a permissive role in the progression of oral squamous cell carcinoma.
• Variations in ECM composition significantly influence OSCC cell behavior and the tumor microenvironment.
• Targeting tumor ECM may offer novel therapeutic avenues for OSCC treatment.