title: Control of osteogenic differentiation and mineralization of human mesenchymal stem cells on composite nanofibers containing poly[lactic-co-(glycolic acid)] and hydroxyapatite.
abstract: We fabricated composite fibrous scaffolds from blends of poly(lactide-co-glycolide) (PLGA) and nano-sized hydroxyapatite (HA) via electrospinning. SEM-EDX and AFM analysis demonstrated that HA was homogeneously dispersed in the nanofibers, and the roughness increased along with the amount of incorporated HA. When hMSCs were cultured on these PLGA/HA composite nanofibers, we found that incorporation of HA on the nanofibers did not affect cell viability whereas increased ALP activity and expression of osteogenic genes as well as the calcium mineralization of hMSCs. Our results indicate that the composite nanofibers can be offered as a potential bone regenerative biomaterial for stem cell based therapies.
authors.affiliation: Department of Bioengineering, College of Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea.
authors.forename: Ji Hye
authors.initials: JH
authors.lastname: Lee
authors.forename: Nae Gyune
authors.initials: NG
authors.lastname: Rim
authors.forename: Hyun Suk
authors.initials: HS
authors.lastname: Jung
authors.forename: Heungsoo
authors.initials: H
authors.lastname: Shin
mesh_terms: D000327:Adsorption / Q000187:drug effects; D000469:Alkaline Phosphatase / Q000378:metabolism; D001798:Blood Proteins / Q000378:metabolism; D002113:Calcification, Physiologic / Q000187:drug effects*; D002118:Calcium / Q000378:metabolism; D002454:Cell Differentiation / Q000187:drug effects*; D002478:Cells, Cultured; D017886:Durapatite / Q000494:pharmacology*; D005786:Gene Expression Regulation / Q000187:drug effects; D006801:Humans; D019344:Lactic Acid / Q000494:pharmacology*; D059630:Mesenchymal Stem Cells / Q000166:cytology* / Q000187:drug effects / Q000201:enzymology / Q000648:ultrastructure; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D057139:Nanofibers / Q000737:chemistry*; D010012:Osteogenesis / Q000187:drug effects* / Q000235:genetics; D011100:Polyglycolic Acid / Q000494:pharmacology*; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D013818:Thermogravimetry
chemical_list: D001798:Blood Proteins; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D017886:Durapatite; D000469:Alkaline Phosphatase; D002118:Calcium