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Development of 3D in vitro platform technology to engineer mesenchymal stem cells
Hossein Hosseinkhani1, Po-Da Hong, Dah-Shyong Yu
1Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology (TAIWANTECH), Taipei, Taiwan. hosseinkhani@mail.ntust.edu.tw
International Journal of Nanomedicine
|July 18, 2012
Summary
Researchers developed a 3D culture system using nanofiber scaffolds to genetically engineer mesenchymal stem cells (MSCs). This method successfully enhanced bone morphogenic protein-2 expression in MSCs for regenerative medicine applications.
Area of Science:
- Biomaterials Engineering
- Stem Cell Biology
- Regenerative Medicine
Background:
- Mesenchymal stem cells (MSCs) are crucial for tissue regeneration.
- Genetic engineering of MSCs can enhance their therapeutic potential.
- Developing effective in vitro systems for MSC modification is essential.
Purpose of the Study:
- To create a three-dimensional (3D) in vitro culture system for genetically engineering MSCs.
- To enhance MSCs to express bone morphogenic protein-2 (BMP-2).
- To evaluate the efficacy of nanoparticle incorporation into nanofiber scaffolds for gene delivery.
Main Methods:
- Fabrication of electrospun nanofiber sheets using poly(glycolic acid) and collagen composites.
- Preparation of homogenous nanoparticles containing plasmid DNA encoding BMP-2 and dextran-spermine.
- Culture of rat bone marrow MSCs on nanofiber sheets and subsequent nanoparticle incorporation.
Main Results:
- Bone morphogenic protein-2 (BMP-2) was significantly detected in MSCs after 2 days when cultured on nanofiber sheets with incorporated nanoparticles.
- MSCs cultured on nanofiber sheets with naked plasmid DNA showed significantly lower BMP-2 detection.
- The nanofiber scaffold system facilitated efficient gene delivery and expression.
Conclusions:
- Nanofiber sheets incorporated with nanoparticles provide a promising strategy for genetically engineering MSCs.
- This 3D in vitro system enables enhanced BMP-2 expression in MSCs.
- The developed system holds potential for future applications in regenerative medicine therapies.
