期刊
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
卷 102, 期 8, 页码 1825-1834出版社
WILEY-BLACKWELL
DOI: 10.1002/jbm.b.33152
关键词
bone tissue engineering; mesenchymal stem cells; biomimetic scaffold; osteoblast differentiation; chitosan
资金
- Council of Scientific and Industrial Research (CSIR), New Delhi, India
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 osteo-conductive 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. (C) 2014 Wiley Periodicals, Inc.
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