Schwann cell-seeded scaffold with longitudinally oriented micro-channels for reconstruction of sciatic nerve in rats

J Mater Sci Mater Med. 2013 Jul;24(7):1767-80. doi: 10.1007/s10856-013-4917-2. Epub 2013 Mar 20.

Abstract

To provide a more permissive environment for axonal regeneration, Schwann cells (SCs) were introduced into a collagen-chitosan scaffold with longitudinally oriented micro-channels (L-CCH). The SC-seeded scaffold was then used for reconstruction of a 15-mm-long sciatic nerve defect in rats. The axonal regeneration and functional recovery were examined by a combination of walking track analysis, electrophysiological assessment, Fluoro-Gold retrograde tracing, as well as morphometric analyses to both regenerated axons and target muscles. The findings showed that SCs adhered and migrated into the L-CCH scaffold and displayed a longitudinal arrangement in vitro. Axonal regeneration as well as functional recovery was in the similar range between SCs-seeded scaffold and autograft groups, which were superior to those in L-CCH scaffold alone group. These indicate that the SCs-seeded L-CCH scaffold, which resembles the microstructure as well as the permissive environment of native peripheral nerves, holds great promise in nerve regeneration therapies.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Animals, Newborn
  • Cell Culture Techniques / instrumentation*
  • Cell Polarity
  • Cells, Cultured
  • Guided Tissue Regeneration* / instrumentation
  • Guided Tissue Regeneration* / methods
  • Nerve Regeneration / physiology*
  • Porosity
  • Rats
  • Rats, Sprague-Dawley
  • Recovery of Function / physiology
  • Schwann Cells / cytology*
  • Schwann Cells / physiology
  • Schwann Cells / transplantation
  • Sciatic Nerve / cytology
  • Sciatic Nerve / physiology*
  • Surface Properties
  • Tissue Scaffolds* / chemistry
  • Transplantation, Autologous / methods