Combined NgR vaccination and neural stem cell transplantation promote functional recovery after spinal cord injury in adult rats

C. J. Xu, L. Xu, L. D. Huang, Y. Li, P. P. Yu, Q. Hang, X. M. Xu, P. H. Lu

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Aims: After spinal cord injury (SCI), there are many adverse factors at the lesion site such as glial scar, myelin-derived inhibitors, cell loss and deficiency of neurotrophins that impair axonal regeneration. Therefore, combination therapeutic strategies might be more effective than a single strategy for promoting functional recovery after SCI. In the present study, we investigated whether a Nogo66 receptor (NgR) vaccine, combined with neural stem cell (NSC) transplantation, could promote better functional recovery than when NgR vaccine or NSCs were used alone. Methods: Adult rats were immunized with NgR vaccine at 1 week after a contusive SCI at the thoracic level, and the NSCs, obtained from green fluorescent protein transgenic rats, were transplanted into the injury site at 8 weeks post injury. The functional recovery of the animals under various treatments was evaluated by three independent behavioural tests, that is, Basso, Beattie and Bresnahan locomotor rating scale, footprint analysis and grid walking. Results: The combined therapy with NgR vaccination and NSC transplantation protected more ventral horn motor neurones in the injured spinal cord and greater functional recovery than when they were used alone. Furthermore, NgR vaccination promoted migration of engrafted NSCs along the rostral-caudal axis of the injured spinal cords, and induced their differentiation into neurones and oligodendrocytes in vivo. Conclusions: The combination therapy of NgR vaccine and NSC transplantation exhibited significant advantages over any single therapy alone in this study. It may represent a potential new therapy for SCI.

Original languageEnglish (US)
Pages (from-to)135-155
Number of pages21
JournalNeuropathology and Applied Neurobiology
Volume37
Issue number2
DOIs
StatePublished - Feb 1 2011

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Keywords

  • Neural stem cells
  • Nogo66 receptor
  • Spinal cord injury
  • Transplantation
  • Vaccine

ASJC Scopus subject areas

  • Clinical Neurology
  • Pathology and Forensic Medicine
  • Neurology
  • Histology
  • Physiology (medical)

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