Novel biomimetic tripolymer scaffolds consisting of chitosan, collagen type 1, and hyaluronic acid for bone marrow-derived human mesenchymal stem cells-based bone tissue engineering.
Human bone marrow-derived mesenchymal stem cells (hMSCs) are an ideal osteogenic cell source for bone tissue engineering (BTE). A scaffold, in the context of BTE, is the extracellular matrix (ECM) that provides the unique microenvironment and play significant role in regulating cell behavior, differentiation, and development in an in vitro culture system. In this study, we have developed novel biomimetic tripolymer scaffolds for BTE using an ECM protein, collagen type 1; an ECM glycosaminoglycan, hyaluronic acid; and a natural osteoconductive polymer, chitosan. The scaffolds were characterized by scanning electron microscopy (SEM) and swelling ratio. The scaffolds were seeded with hMSCs and tested for cytocompatibility and osteogenic potential. The scaffolds supported cell adhesion, enhanced cell proliferation, promoted cell migration, showed good cell viability, and osteogenic potential. The cells were able to migrate out from the scaffolds in favorable conditions. SEM, alkaline phosphatase assay, and immunofluorescent staining confirmed the differentiation of hMSCs to osteogenic lineage in the scaffolds. In conclusion, we have successfully developed biomimetic scaffolds that supported the proliferation and differentiation of hMSCs. These scaffolds hold great promise as a cell-delivery vehicle for regenerative therapies and as a support system for enhancing bone regeneration.
Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad-500007, India.
Smitha
S
Mathews
Ramesh
R
Bhonde
Pawan Kumar
PK
Gupta
Satish
S
Totey
D000328:Adult; D040761:Biomimetic Materials / Q000737:chemistry*; D001854:Bone Marrow Cells / Q000166:cytology / Q000378:metabolism*; D001861:Bone Regeneration; D002454:Cell Differentiation; D002465:Cell Movement; D049109:Cell Proliferation; D002470:Cell Survival; D002478:Cells, Cultured; D048271:Chitosan / Q000737:chemistry*; D024042:Collagen Type I / Q000737:chemistry*; D005260:Female; D006801:Humans; D006820:Hyaluronic Acid / Q000737:chemistry*; D008297:Male; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000378:metabolism*; D010012:Osteogenesis; D023822:Tissue Engineering; D054457:Tissue Scaffolds / Q000737:chemistry*
D024042:Collagen Type I; D006820:Hyaluronic Acid; D048271:Chitosan
biomimetic scaffold; bone tissue engineering; chitosan; mesenchymal stem cells; osteoblast differentiation