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Journal of Neurorestoratology 2017, 5(1): 155-165 https://doi.org/10.2147/JN.S139823
Original Research | Open Access | Issue | Published: 06 September 2017

In vitro study of neural stem cells and activated Schwann cells cocultured on electrospinning polycaprolactone scaffolds

Show Author's Information Baoyou Fan1,2,*,  Xianhu Zhou1,2,*,  Lina Wang3,*,  Zhijian Wei1,2,  Wei Lin1,2,  Yiming Ren1,2,  Guidong Shi1,2,  Xin Cheng1,2,  Lianyong Wang3( ),  Shiqing Feng1,2( )
International Science and Technology Cooperation Base of Spinal Cord Injury, Department of Orthopedic Surgery, Tianjin Medical University General Hospital,
Tianjin Neurological Institute, Key Laboratory of Post-neuroinjury Neuro-repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City,
Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, People’s Republic of China

*These authors contributed equally to this work

Keywords:
electrospinning, Schwann cells, neural stem cells, scaffold, PCL
Cite this article:
Fan B, Zhou X, Wang L, et al. In vitro study of neural stem cells and activated Schwann cells cocultured on electrospinning polycaprolactone scaffolds. Journal of Neurorestoratology, 2017, 5(1): 155-165. https://doi.org/10.2147/JN.S139823
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Abstract Full text About this article
Background:

To investigate the biocompatibility of electrospinning polycaprolactone (PCL) fiber scaffolds and coculture system, which consisted of neural stem cells (NSCs) and activated Schwann cells (ASCs).

Materials and methods:

ASCs were isolated from sciatic nerves, ligated for 7 days, in 4-week-old Wistar rats, and the NSCs were isolated from the hippocampus of E14.5 Wistar rat embryos. ASCs, NSCs and ASCs combined with NSCs were 3D cultured on the electrospinning PCL fiber scaffolds. Crystal violet staining was used to find the suitable density of ASCs for growth, and the proliferation of NSCs and ASCs were tested by Cell Counting Kit (CCK)-8 assay, and cell adhesion, differentiation of NSCs and myelin basic protein (MBP) expression of ASCs were observed by laser confocal microscopy. Distribution and morphology were assessed by scanning electron microscopy.

Results:

The average diameter of fibers in electrospinning PCL scaffolds was approximately 7.93±1.41 μm. ASCs could grow well at the density of 2×104/cm2, and a certain number of cells extended along the longitudinal axis of fibers, and the shape of the cells was spindle, which was consistent with crystal violet staining results. The CCK-8 experiment showed ASCs could proliferate gradually on the PCL scaffold within 7 days, as well as NSCs, and NSCs differentiated into astrocytes, neurons and oligodendrocytes on the PCL scaffold; PCL scaffolds could improve the differentiation rate of neurons. After NSCs and ASCs were cocultured on electrospinning PCL scaffolds, ASCs could express MBP and NSCs could differentiate into neurons, which distributed around those ASCs expressing MBP.

Conclusion:

Electrospinning PCL fibrous scaffolds showed good biocompatibility, and the fibers had an inducing effect on the distribution of ASCs. NSCs and ASCs cultured on electrospinning PCL scaffolds could form 3D culture system, and NSCs could differentiate into neurons which distributed around the ASCs expressing MBP.


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Abstract
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About this article

In vitro study of neural stem cells and activated Schwann cells cocultured on electrospinning polycaprolactone scaffolds

Show Author's information Baoyou Fan1,2,*, Xianhu Zhou1,2,*, Lina Wang3,*, Zhijian Wei1,2, Wei Lin1,2, Yiming Ren1,2, Guidong Shi1,2, Xin Cheng1,2, Lianyong Wang3( ), Shiqing Feng1,2( )
International Science and Technology Cooperation Base of Spinal Cord Injury, Department of Orthopedic Surgery, Tianjin Medical University General Hospital,
Tianjin Neurological Institute, Key Laboratory of Post-neuroinjury Neuro-repair and Regeneration in Central Nervous System, Ministry of Education and Tianjin City,
Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, People’s Republic of China

*These authors contributed equally to this work

Abstract

Background:

To investigate the biocompatibility of electrospinning polycaprolactone (PCL) fiber scaffolds and coculture system, which consisted of neural stem cells (NSCs) and activated Schwann cells (ASCs).

Materials and methods:

ASCs were isolated from sciatic nerves, ligated for 7 days, in 4-week-old Wistar rats, and the NSCs were isolated from the hippocampus of E14.5 Wistar rat embryos. ASCs, NSCs and ASCs combined with NSCs were 3D cultured on the electrospinning PCL fiber scaffolds. Crystal violet staining was used to find the suitable density of ASCs for growth, and the proliferation of NSCs and ASCs were tested by Cell Counting Kit (CCK)-8 assay, and cell adhesion, differentiation of NSCs and myelin basic protein (MBP) expression of ASCs were observed by laser confocal microscopy. Distribution and morphology were assessed by scanning electron microscopy.

Results:

The average diameter of fibers in electrospinning PCL scaffolds was approximately 7.93±1.41 μm. ASCs could grow well at the density of 2×104/cm2, and a certain number of cells extended along the longitudinal axis of fibers, and the shape of the cells was spindle, which was consistent with crystal violet staining results. The CCK-8 experiment showed ASCs could proliferate gradually on the PCL scaffold within 7 days, as well as NSCs, and NSCs differentiated into astrocytes, neurons and oligodendrocytes on the PCL scaffold; PCL scaffolds could improve the differentiation rate of neurons. After NSCs and ASCs were cocultured on electrospinning PCL scaffolds, ASCs could express MBP and NSCs could differentiate into neurons, which distributed around those ASCs expressing MBP.

Conclusion:

Electrospinning PCL fibrous scaffolds showed good biocompatibility, and the fibers had an inducing effect on the distribution of ASCs. NSCs and ASCs cultured on electrospinning PCL scaffolds could form 3D culture system, and NSCs could differentiate into neurons which distributed around the ASCs expressing MBP.

Keywords: electrospinning, Schwann cells, neural stem cells, scaffold, PCL

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Publication history

Published: 06 September 2017
Issue date: December 2017

Copyright

© 2017 The Author(s).

Acknowledgements

This study was supported by the State Key Program of National Natural Science Foundation of China (81330042), Special Program for Sino-Russian Joint Research Sponsored by the Ministry of Science and Technology, China (2014DFR31210), International Cooperation Program of National Natural Science Foundation of China (81620108018), and Key Program Sponsored by the Tianjin Science and Technology Committee, China (14ZCZDSY00044, 13RCGFSY19000). The authors also thank Yan Hao and Baowen Liu for their help with the experiment.

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