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Direct Write Assembly of Graphene/Poly(ε-Caprolactone) Composite Scaffolds and Evaluation of Their Biological Performance Using Mouse Bone Marrow Mesenchymal Stem Cells

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Abstract

Scaffold and mesenchymal stem cell–based cartilage tissue engineering offers a favorable way for the repair and regeneration of injured cartilage. In this study, poly (ε-caprolactone) PCL scaffolds with grid-like structure having periodic lattice was manufactured by robocasting method in the presence of graphene nanoplatelets for cartilage tissue engineering applications. For this purpose, a PCL solution (20 wt%) containing pristine graphene nanopowders in the form of platelets was prepared as printing ink and it was dispensed through a nozzle at room temperature to an ethanol bath at 4 °C. The construction of porous scaffolds was made by a layer-by-layer assembly. Results revealed that graphene additions were not detrimental to deposition process and the structure of the resultant scaffolds. In vitro cell tests indicated that the prepared grid-like graphene/PCL composite scaffolds have good cytocompatibility and non-toxicity for mouse bone marrow mesenchymal stem cells. The stem cells attached and proliferated well on the scaffolds and they also demonstrated a chondrogenic differentiation in the absence of transforming growth factors.

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Acknowledgments

The author would like to thank Dr. Harika Atmaca and graduate student Mert Türk for technical support and IYTE–MAM for the SEM analysis. Cell culture experiments were made in Applied Science Research Center at Manisa Celal Bayar University.

Funding

The financial support for this research was provided by the Scientific and Technical Research Council of Turkey (TUBITAK), grant no. 114M519.

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Correspondence to Aylin M. Deliormanlı.

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Deliormanlı, A.M. Direct Write Assembly of Graphene/Poly(ε-Caprolactone) Composite Scaffolds and Evaluation of Their Biological Performance Using Mouse Bone Marrow Mesenchymal Stem Cells. Appl Biochem Biotechnol 188, 1117–1133 (2019). https://doi.org/10.1007/s12010-019-02976-5

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