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Elastin-like Recombinamer Hydrogels as Platforms for Breast Cancer Modeling
Barbara Blanco-Fernandez1,2, Arturo Ibañez-Fonseca3, Doriana Orbanic3
1Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10-12, Barcelona 08028, Spain.
Biomacromolecules
|January 4, 2023
Summary
Elastin-like recombinamer (ELR) hydrogels effectively mimic the tumor extracellular matrix (ECM) for advanced breast cancer models. These biomaterials support cell growth and drug resistance, showing promise for cancer research.
Area of Science:
- Biomaterials Science
- Cancer Biology
- Tissue Engineering
Background:
- The extracellular matrix (ECM) plays a crucial role in tumor progression.
- Developing biomaterials that mimic the tumor ECM is essential for creating predictive cancer models.
- Elastin-based polypeptides offer tunable properties suitable for ECM mimicry.
Purpose of the Study:
- To evaluate elastin-like recombinamer (ELR) hydrogels as biomaterials for breast cancer modeling.
- To create a biomaterial that replicates key features of the tumor microenvironment.
- To assess cell viability, proliferation, and behavior within the developed hydrogel system.
Main Methods:
- Fabrication of ELR hydrogels using two polypeptides with specific functional groups (MMP-cleavable, cyclooctyne, RGD, azide).
- Utilized click-chemistry for hydrogel cross-linking, ensuring cell adhesion, biodegradability, and tunable stiffness.
- Cultured breast cancer (MCF7, MDA-MB-231) and non-tumorigenic (MCF10A) cells within the hydrogels for up to 7 days.
Main Results:
- High cell viability and proliferation were observed for both cancer and non-tumorigenic breast cells over 7 days.
- MCF7 and MCF10A cells formed spheroids, while MDA-MB-231 cells formed distinct cell networks.
- All cell types expressed ECM components and exhibited significant drug resistance within the hydrogels.
Conclusions:
- ELR hydrogels serve as a promising biomaterial for developing more accurate breast cancer models.
- The developed hydrogels successfully support cell growth and mimic key aspects of the tumor microenvironment, including ECM expression and drug resistance.
- This approach facilitates advanced studies on breast cancer progression and therapeutic responses.
