title: Immobilization of chitosan onto poly-L-lactic acid film surface by plasma graft polymerization to control the morphology of fibroblast and liver cells.
abstract: Surface functionalization of biodegradable poly-L-lactic acid (PLLA) was achieved by plasma coupling reaction of chitosan. The structure of modified PLLA surfaces was characterized by contact angle measurements and X-ray photoelectron spectroscopy. Two cell lines, L929 (mouse fibroblasts) and L02 (human hepatocytes), were cultured on the modified PLLA surface. It was found that cells cultured on this film could hardly spread and tend to become round, and the film was demonstrated to be a poorly adhering substrate. However, cells grown on this substrate can proliferate at almost the same speed as cultured on a glass surface. These results suggest that the new substrate can be used to control the morphology of cells, and has potential applications in tissue engineering. It may be helpful in understanding the mechanism of the switch between cell phases of growth and differentiation, which is necessary for the design of tissue regeneration biomaterials.
authors: National Key Laboratory of Pharmaceutical Biotechnology, Department of Biochemistry, Nanjing University, Nanjing 210093, China.
authors: Zhi
authors: Z
authors: Ding
authors: Jiangning
authors: J
authors: Chen
authors: Shuying
authors: S
authors: Gao
authors: Jianbing
authors: J
authors: Chang
authors: Junfeng
authors: J
authors: Zhang
authors: E T
authors: ET
authors: Kang
mesh_terms: D000327:Adsorption; D000818:Animals; D002454:Cell Differentiation / Q000502:physiology; D002460:Cell Line; D048429:Cell Size / Q000502:physiology; D002686:Chitin / Q000031:analogs & derivatives* / Q000737:chemistry*; D048271:Chitosan; D020099:Coated Materials, Biocompatible / Q000138:chemical synthesis / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D005347:Fibroblasts / Q000166:cytology* / Q000502:physiology; D022781:Hepatocytes / Q000166:cytology* / Q000502:physiology; D006358:Hot Temperature; D006801:Humans; D019344:Lactic Acid / Q000737:chemistry*; D008422:Materials Testing; D051379:Mice; D008968:Molecular Conformation; D011091:Polyesters; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D013499:Surface Properties; D023822:Tissue Engineering / Q000379:methods*
chemical_list: D020099:Coated Materials, Biocompatible; D011091:Polyesters; D011108:Polymers; D002686:Chitin; D019344:Lactic Acid; C033616:poly(lactide); D048271:Chitosan