Electrospun nerve guide conduits have the potential to bridge peripheral nerve injuries in vivo.

Hanna Frost, Tomas Andersson, Sebastian Johansson, Ulrica Englund Johansson, Per Ekström, Lars Dahlin, Fredrik Johansson

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

33 Citeringar (SciVal)

Sammanfattning

Electrospinning can be used to mimic the architecture of an acellular nerve graft, combining microfibers for guidance, and pores for cellular infiltration. We made electrospun nerve guides, from polycaprolactone (PCL) or poly-L-lactic acid (PLLA), with aligned fibers along the insides of the channels and random fibers around them. We bridged a 10 mm rat sciatic nerve defect with the guides, and, in selected groups, added a cell transplant derived from autologous stromal vascular fraction (SVF). For control, we compared to hollow silicone tubes; or autologous nerve grafts. PCL nerve guides had a high degree of autotomy (8/43 rats), a negative indicator with respect to future usefulness, while PLLA supported axonal regeneration, but did not outperform autologous nerve grafts. Transplanted cells survived in the PLLA nerve guides, but axonal regeneration was not enhanced as compared to nerve guides alone. The inflammatory response was partially enhanced by the transplanted cells in PLLA nerve grafts; Schwann cells were poorly distributed compared to nerve guide without cells. Tailor-made electrospun nerve guides support axonal regeneration in vivo, and can act as vehicles for co-transplanted cells. Our results motivate further studies exploring novel nerve guides and the effect of stromal cell-derived factors on nerve generation.
Originalspråkengelska
Artikelnummer16716
TidskriftScientific Reports
Volym8
UtgåvaArticle number: 16716
DOI
StatusPublished - 2018 nov. 14

Ämnesklassifikation (UKÄ)

  • Medicinsk bioteknologi (med inriktning mot cellbiologi (inklusive stamcellsbiologi), molekylärbiologi, mikrobiologi, biokemi eller biofarmaci)
  • Neurovetenskaper

Nyckelord

  • peripheral nerve injury
  • nerve repair
  • electrospinning
  • nanofibers
  • cell therapy
  • autologous transplantation

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