Engineering ECM-mimetic scaffolds from biological macromolecules for physiologically relevant tumoroid models

Area of Science:

• Biomaterials Science
• Cancer Biology
• Tissue Engineering

Background:

• The tumor extracellular matrix (ECM) is crucial for cancer cell behavior, invasion, and treatment response.
• Current 3D tumor models lack the necessary ECM cues for accurate preclinical research.
• Physiologically relevant scaffolds are needed to overcome limitations in existing tumor models.

Purpose of the Study:

• To review and synthesize knowledge on using tumor ECM macromolecules for engineering physiologically relevant scaffolds.
• To evaluate different ECM-mimetic platforms and fabrication strategies for 3D tumor models.
• To propose a framework for linking scaffold properties to tumor phenotypes and guide material selection for specific cancers.

Main Methods:

• Review of current literature on tumor ECM composition and function.
• Evaluation of various ECM-mimetic scaffold platforms (decellularized matrices, hydrogels, synthetic polymers).
• Analysis of fabrication strategies for controlling scaffold properties (stiffness, architecture, degradation).

Main Results:

• ECM macromolecules can be leveraged as modular design elements for scaffold engineering.
• Diverse ECM-mimetic platforms offer tunable properties to mimic tumor microenvironments.
• A materials-centered framework links scaffold characteristics to tumor phenotypes like EMT and drug response.

Conclusions:

• ECM-mimetic biomaterials are essential for creating advanced 3D tumor models.
• Addressing materials challenges like chemical definition and standardization is critical for translational applications.
• Engineered microenvironments are key for next-generation cancer research and precision oncology.