title: A novel membrane-type apatite scaffold engineered by pulsed laser ablation.
abstract: Cell sheet technology is a scaffold-free method for tissue reconstruction. A sheet-shaped scaffold would be suitable for the regeneration of periodontal membrane. We designed a stem cell sheet combining human mesenchymal stromal cells (hMSCs) and a 10-µm thick biological apatite (BAp) membrane fabricated with an ArF pulsed laser ablation for periodontal regeneration. X-ray diffraction showed that crystalline hydroxyapatite (HAp) was present in BAp and HAp membranes after post-annealing. Energy dispersive analysis of the BAp membrane revealed peaks of Na and Mg in addition to Ca and P. Approximately 3×10(4) hMSCs were cultured on BAp and HAP membranes for 7 and 14 days. From in vitro assays, hMSCs grew faster and had higher osteoblast differentiation when cultured on the BAp membrane than did the cell culture on the HAp membrane. Stem cell sheets combined with a BAp membrane may have potential applications in guided bone regeneration and osteoconductive scaffolds.
authors.affiliation: Department of Biomaterials, Osaka Dental University.
authors.forename: Yoshiya
authors.initials: Y
authors.lastname: Hashimoto
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Nishikawa
authors.forename: Masanobu
authors.initials: M
authors.lastname: Kusunoki
authors.forename: PeiQi
authors.initials: P
authors.lastname: Li
authors.forename: Shigeki
authors.initials: S
authors.lastname: Hontsu
mesh_terms: D055011:Ablation Techniques; D001031:Apatites / Q000737:chemistry*; D002454:Cell Differentiation; D004867:Equipment Design; D006801:Humans; D007834:Lasers; D008422:Materials Testing; D059630:Mesenchymal Stem Cells / Q000166:cytology*; D010006:Osteoblasts / Q000166:cytology*; D013052:Spectrometry, X-Ray Emission; D023822:Tissue Engineering / Q000379:methods*; D054457:Tissue Scaffolds / Q000737:chemistry*
chemical_list: D001031:Apatites