Experimental study of ASCs combined with POC-PLA patch for the reconstruction of full-thickness chest wall defects

PLoS One. 2017 Aug 11;12(8):e0182971. doi: 10.1371/journal.pone.0182971. eCollection 2017.

Abstract

To explore the repairing effect of combination of adipose stem cells (ASCs) and composite scaffolds on CWR, the electrospun Poly 1, 8-octanediol-co-citric acid (POC)-poly-L-lactide acid (PLA) composite scaffolds were prepared, followed by in vitro and in vivo biocompatibility evaluation of the scaffolds. Afterwards, ASCs were seeded on POC-PLA to construct the POC-PLA-ASCs scaffolds, and the POC-PLA, POC-PLA-ASCs, and traditional materials expanded polytetrafluoroethylene (ePTFE) were adopt for CWR in New Zealand white (NZW) rabbit models. As results, the POC-PLA-ASCs patches possessed good biocompatibility as the high proliferation ability of cells surrounding the patches. Rabbits in POC-PLA-ASCs groups showed better pulmonary function, less pleural adhesion, higher degradation rate and more neovascularization when compared with that in other two groups. The results of western blot indicated that POC-PLA-ASCs patches accelerated the expression of VEGF and Collagen I in rabbit models. From the above, our present study demonstrated that POC-PLA material was applied for CWR successfully, and ASCs seeded on the sheets could improve the pleural adhesions and promote the reparation of chest wall defects.

MeSH terms

  • Adipose Tissue / cytology
  • Adipose Tissue / physiology
  • Animals
  • Biomarkers / metabolism
  • Cell- and Tissue-Based Therapy / methods
  • Cells, Cultured
  • Citrates / chemistry
  • Citrates / pharmacology*
  • Collagen Type I / genetics
  • Collagen Type I / metabolism
  • Congenital Abnormalities / pathology
  • Congenital Abnormalities / rehabilitation*
  • Congenital Abnormalities / surgery
  • Female
  • Gene Expression
  • Male
  • Neovascularization, Physiologic / drug effects
  • Polyesters / chemistry
  • Polyesters / pharmacology*
  • Polymers / chemistry
  • Polymers / pharmacology*
  • Polytetrafluoroethylene / chemistry
  • Polytetrafluoroethylene / pharmacology
  • Rabbits
  • Rats
  • Rats, Sprague-Dawley
  • Stem Cells / cytology
  • Stem Cells / physiology*
  • Surgical Mesh
  • Thoracic Wall / abnormalities
  • Thoracic Wall / surgery*
  • Tissue Engineering / methods
  • Tissue Scaffolds*
  • Vascular Endothelial Growth Factor A / genetics
  • Vascular Endothelial Growth Factor A / metabolism

Substances

  • Biomarkers
  • Citrates
  • Collagen Type I
  • Polyesters
  • Polymers
  • Vascular Endothelial Growth Factor A
  • poly(1,8-octanediol citrate)
  • poly(lactide)
  • Polytetrafluoroethylene

Grants and funding

This study was supported by National Natural Science Foundation of China (NSFC, Grants no: 81301644).