Engineering Novel 3D Models to Recreate High-Grade Osteosarcoma and its Immune and Extracellular Matrix...

Area of Science:

• Biomedical Engineering
• Oncology
• Cancer Research

Background:

• Osteosarcoma (OS) is a primary bone cancer with poor survival rates, especially in resistant cases.
• Current preclinical models lack accuracy due to insufficient representation of tumor heterogeneity and microenvironment.
• Developing better models is essential for effective OS drug development and personalized medicine.

Purpose of the Study:

• To bioengineer patient-derived 3D models that mimic osteosarcoma (OS) heterogeneity.
• To incorporate interactions with tumor-associated macrophages (TAMs) and varying oxygen concentrations.
• To create a more accurate preclinical platform for OS drug testing and understanding tumor biology.

Main Methods:

• Developed 2D and subsequently 3D preclinical models using patient-derived osteosarcoma cells.
• Incorporated tumor-associated macrophages (M2-like) and modulated oxygen levels (hypoxia).
• Recreated bone scaffold and assessed model fidelity in preserving histological and biological characteristics.

Main Results:

• Successfully generated 2D and 3D models that replicate OS heterogeneity and TAM interactions.
• Demonstrated reproducible M2-like macrophage co-culture with OS cell lines in both dimensions.
• The 3D models provided accurate data on proliferation and migration, reflecting in vivo conditions.

Conclusions:

• Engineered 3D osteosarcoma models accurately reflect tumor heterogeneity and immune microenvironment interactions.
• These advanced preclinical systems offer improved insights into OS mechanisms and cell-biomatrix interactions.
• The developed models hold significant potential for advancing personalized medicine in osteosarcoma treatment.