Abstract
Background aims. The suppression of cell apoptosis using a biodegradable scaffold to replace the missing or altered extracellular matrix (ECM) could increase the survival of transplanted cells and thus increase the effectiveness of cell therapy. Methods. We studied the best conditions for the proliferation and differentiation of human bone marrow stromal cells (hBMSC) when cultured on different biologic scaffolds derived from fibrin and blood plasma, and analyzed the best concentrations of fibrinogen, thrombin and calcium chloride for favoring cell survival. The induction of neural differentiation of hBMSC was done by adding to these scaffolds different growth factors, such as nerve growth factor (NGF), brain-derived-neurotrophic factor (BDNF) and retinoic acid (RA), at concentrations of 100 ng/mL (NGF and BDNF) and 1 μ/mL (RA), over 7 days. Results. Although both types of scaffold allowed survival and neural differentiation of hBMSC, the results showed a clear superiority of platelet-rich plasma (PRP) scaffolds, mainly after BDNF administration, allowing most of the hBMSC to survive and differentiate into a neural phenotype. Conclusions. Given that clinical trials for spinal cord injury using hBMSC are starting, these findings may have important clinical applications.
Acknowledgments
This work was supported by grants from the Carlos III Institute (FIS 07/0621, FIS PS09/01105) and Mutua Madrileña Foundation.
Declaration of interest: The authors report no competing financial interests exist. The authors alone are responsible for the content and writing of the paper.