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A step-by-step protocol for generating human fibroblast cell-derived completely biological extracellular matrix
Dhavan Sharma1, Morgan Ferguson1, Feng Zhao1
1Department of Biomedical Engineering, Michigan Technological University, Houghton, MI, United States.
Methods in Cell Biology
|March 31, 2020
Summary
Researchers developed a novel biological scaffold from human dermal fibroblast cell sheets. This decellularized extracellular matrix (ECM) offers a highly biomimetic microenvironment for tissue engineering applications.
Area of Science:
- Tissue Engineering
- Biomaterials Science
- Cell Biology
Background:
- Native extracellular matrix (ECM) scaffolds offer superior structural and compositional complexity compared to engineered alternatives.
- Native ECM facilitates crucial cell-ECM crosstalk and creates biomimetic cellular environments.
- Current decellularized ECM scaffolds from allogeneic or xenogeneic sources face limitations like batch variation, pathogen transfer, immune response, and donor scarcity.
Purpose of the Study:
- To develop a novel, completely biological ECM scaffold using a reproducible protocol.
- To overcome limitations associated with traditional ECM scaffold sources.
- To create a highly biomimetic scaffold for tissue regeneration.
Main Methods:
- A step-by-step protocol for decellularizing human dermal fibroblast (hDF) cell sheets was established.
- Decellularization was performed using sodium dodecyl sulfate (SDS) and ethylene diamine tetraacetate (EDTA).
- The resulting scaffold's composition and structure were analyzed.
Main Results:
- A nanofibrous scaffold composed of native ECM proteins (collagens, fibronectin, laminin, elastin) was successfully generated.
- The decellularization process yielded an organized ECM sheet.
- The scaffold retained essential structural proteins and macromolecules.
Conclusions:
- Cell-derived nanofibrous ECM scaffolds offer a promising alternative to traditional scaffolds.
- This method provides a controllable and potentially safer source for biomimetic tissue engineering scaffolds.
- The developed scaffold supports the creation of highly biomimetic functional tissues.