Volume 109, Issue 5 pp. 779-787
Original Article

Olfactory ensheathing cells seeded decellularized scaffold promotes axonal regeneration in spinal cord injury rats

Fangzheng Yu

Fangzheng Yu

Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China

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Peifeng Li

Peifeng Li

Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China

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Shenghu Du

Shenghu Du

Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China

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KoonHei W. Lui

KoonHei W. Lui

Department of Plastic Surgery, The First affiliated hospital of Sun Yat-Sen University, Guangdong, China

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Yutian Lin

Yutian Lin

Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China

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Lumin Chen

Lumin Chen

Wenzhou Medical University, Wenzhou, China

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Qi Ren

Qi Ren

Wenzhou Medical University, Wenzhou, China

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Jian Wang

Jian Wang

Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China

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Jin Mei

Jin Mei

Institute of Neuroscience, Wenzhou Medical University, Wenzhou, China

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Jian Xiao

Corresponding Author

Jian Xiao

School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang, China

Correspondence

Junyi Zhu, Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.

Email: [email protected]

Jian Xiao, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang, China.

Email: [email protected]

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Junyi Zhu

Corresponding Author

Junyi Zhu

Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China

Correspondence

Junyi Zhu, Department of Hand Surgery and Peripheral Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.

Email: [email protected]

Jian Xiao, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang, China.

Email: [email protected]

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First published: 27 July 2020
Citations: 16

Fangzheng Yu and Peifeng Li contributed equally to this study.

Funding information: Wenzhou Science and Technology Bureau, Grant/Award Number: Y20180498

Abstract

Spinal cord decellularized (DC) scaffolds can promote axonal regeneration and restore hindlimb motor function of spinal cord defect rats. However, scarring caused by damage to the astrocytes at the margin of injury can hinder axon regeneration. Olfactory ensheathing cells (OECs) integrate and migrate with astrocytes at the site of spinal cord injury, providing a bridge for axons to penetrate the scars and grow into lesion cores. The purpose of this study was to evaluate whether DC scaffolds carrying OECs could better promote axon growth. For these studies, DC scaffolds were cocultured with primary extracted and purified OECs. Immunofluorescence and electron microscopy were used for verification of cells adhere and growth on the scaffold. Scaffolds with OECs were transplanted into rat spinal cord defects to evaluate axon regeneration and functional recovery of hind limbs. Basso, Beattie, and Bresnahan (BBB) scoring was used to assess motor function recovery, and glial fibrillary acidic protein (GFAP) and NF200-stained tissue sections were used to evaluate axonal regeneration and astrological scar distribution. Our results indicated that spinal cord DC scaffolds have good histocompatibility and spatial structure, and can promote the proliferation of adherent OECs. In animal experiments, scaffolds carrying OECs have better axon regeneration promoting protein expression than the SCI model, and improve the proliferation and distribution of astrocytes at the site of injury. These results proved that the spinal cord DC scaffold with OECs can promote axon regeneration at the site of injury, providing a new basis for clinical application.

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