Departmental Papers (Dental)
3D Bio-printed Scaffold-free Nerve Constructs with Human Gingiva-derived Mesenchymal Stem Cells Promote Rat Facial Nerve Regeneration
Date of this Version
Article number 6634
Despite the promising neuro-regenerative capacities of stem cells, there is currently no licensed stem cell-based product in the repair and regeneration of peripheral nerve injuries. Here, we explored the potential use of human gingiva-derived mesenchymal stem cells (GMSCs) as the only cellular component in 3D bio-printed scaffold-free neural constructs that were transplantable to bridge facial nerve defects in rats. We showed that GMSCs have the propensity to aggregate into compact 3D-spheroids that could produce their own matrix. When cultured under either 2D- or 3D-collagen scaffolds, GMSC spheroids were found to be more capable of differentiating into both neuronal and Schwann-like cells than their adherent counterparts. Using a scaffold-free 3D bio-printer system, nerve constructs were printed from GMSC spheroids in the absence of exogenous scaffolds and allowed to mature in a bioreactor. In vivo transplantation of the GMSC-laden nerve constructs promoted regeneration and functional recovery when used to bridge segmental defects in rat facial nerves. Our findings suggest that GMSCs represent an easily accessible source of MSCs for 3D bio-printing of scaffold-free nervous tissue constructs with promising potential application for repair and regeneration of peripheral nerve defects. © 2018 The Author(s).
Animals, Cell Culture Techniques, Cell Differentiation, Collagen, Facial Nerve, Gingiva, Humans, Immunohistochemistry, Mesenchymal Stem Cells, Nerve Regeneration, Printing, Three-Dimensional, Rats, Tissue Scaffolds, collagen, animal, cell culture technique, cell differentiation, chemistry, cytology, facial nerve, gingiva, human, immunohistochemistry, mesenchymal stem cell, metabolism, nerve regeneration, rat, three dimensional printing, tissue scaffold
Zhang, Q., Nguyen, P. D., Shi, S., Burrell, J. C., Cullen, K. D., & Le, A. D. (2018). 3D Bio-printed Scaffold-free Nerve Constructs with Human Gingiva-derived Mesenchymal Stem Cells Promote Rat Facial Nerve Regeneration. Scientific Reports, 8 (1), Article number 6634-. http://dx.doi.org/10.1038/s41598-018-24888-w
Date Posted: 08 December 2022
This document has been peer reviewed.