Bone Marrow Mesenchymal Stem Cells in a Three-Dimensional Gelatin Sponge Scaffold Attenuate Inflammation, Promote Angiogenesis, and Reduce Cavity Formation in Experimental Spinal Cord Injury
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AbstractThree-dimensional (3D) gelatin sponge (GS) scaffolds were constructed by ensheathing GS with a thin film of poly-(lactide-co-glycolide) (PLGA). Rat bone marrow-derived mesenchymal stem cells (MSCs) were isolated, cultured, and then seeded to the scaffolds. Distribution of cells and cell growth, survival, and proliferation within the scaffolds were then determined. Immunofluorescence and Western blot analysis were employed to detect the deposition of fibronectin to the scaffolds on day 3 and day 7 of culture. Scaffolds with or without MSCs were then transplanted into the transected rat spinal cord. One or 8 weeks following transplantation, cavity areas, activated macrophages/microglia, expression of TNF-alpha and IL-1 beta, and neovascularization within the grafts were examined and quantified. Deposition of fibronectin (FN) and expression of vascular endothelial growth factor (VEGF) and hypoxia-inducible factor-1 alpha (HIF-1 alpha) as potential inducing factors for angiogenesis were also examined. Results showed that 3D GS scaffolds allowed MSCs to adhere, survive, and proliferate and also FN to deposit. In vivo transplantation experiments demonstrated that these scaffolds were biocompatible, and MSCs seeded to the scaffolds played an important role in attenuating inflammation, promoting angiogenesis, and reducing cavity formation. Therefore, the GS scaffolds with MSCs may serve as promising supporting transplants for repairing spinal cord injury.
All Author(s) ListZeng X, Zeng YS, Ma YH, Lu LY, Du BL, Zhang W, Li Y, Chan WY
Journal nameCell Transplantation
Detailed descriptionTo ORKTS: doi:10.3727/096368911X566181
Volume Number20
Issue Number11-12
PublisherCognizant Communication Corporation: Creative Commons Attribution Non-Commercial
Pages1881 - 1899
LanguagesEnglish-United Kingdom
KeywordsAngiogenesis; Gelatin sponge; Inflammation; Mesenchymal stem cells (MSCs); Spinal cord injury; Tissue engineering
Web of Science Subject CategoriesCell & Tissue Engineering; CELL & TISSUE ENGINEERING; Cell Biology; Medicine, Research & Experimental; MEDICINE, RESEARCH & EXPERIMENTAL; Research & Experimental Medicine; Transplantation; TRANSPLANTATION

Last updated on 2020-09-07 at 23:07