title: The fundamental parameters of chitosan in polymer scaffolds affecting osteoblasts (MC3T3-E1).
abstract: The aim of this study was to investigate the degree of deacetylation (DD) and molecular weight (MW) of chitosan within chitosan-collagen scaffolds on mouse osteoblasts (MC3T3-E1). The chitosan-collagen scaffolds were fabricated by freeze-drying technique. The studies on cell attachment and proliferation, alkaline phosphatase (ALP) activity, cell morphology, and mineralized nodule formation by osteoblasts on scaffolds were investigated. No statistically significant difference was found on cell attachment, but the chitosan-collagen scaffolds with low-DD chitosan had a statistically significantly (P < 0.05) higher proliferative effect and ALP activity than those scaffolds with high-DD chitosan, regardless of molecular weight. Scanning electron images demonstrated that MC3T3-E1 cells grew well on all test scaffolds; on the contrary, mineralized nodule formation was not found. In conclusion, the DD of chitosan is a crucial factor for MC3T3-E1 cells and it should be considered in further applications for bone tissue engineering.
authors.affiliation: Department of Oral Medicine, Mahidol University, Bangkok, 10400, Thailand. wiroj_bu@hotmail.com
authors.forename: Wiroj
authors.initials: W
authors.lastname: Suphasiriroj
authors.forename: Pusadee
authors.initials: P
authors.lastname: Yotnuengnit
authors.forename: Rudee
authors.initials: R
authors.lastname: Surarit
authors.forename: Rath
authors.initials: R
authors.lastname: Pichyangkura
mesh_terms: D016475:3T3 Cells; D000469:Alkaline Phosphatase / Q000378:metabolism; D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry*; D002448:Cell Adhesion; D049109:Cell Proliferation; D048271:Chitosan / Q000737:chemistry*; D008422:Materials Testing; D051379:Mice; D008855:Microscopy, Electron, Scanning; D008903:Minerals / Q000378:metabolism; D010006:Osteoblasts / Q000166:cytology* / Q000502:physiology; D010012:Osteogenesis / Q000502:physiology; D023822:Tissue Engineering; D054457:Tissue Scaffolds / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D008903:Minerals; D048271:Chitosan; D000469:Alkaline Phosphatase
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