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Effect of Surface Electrostatic Property on Chondrogenic Differentiation of Human Mesenchymal Stem Cells

文献类型: 会议论文

第一作者: Likun Guo

作者: Likun Guo 1 ; Yujiang Fan 2 ; Naoki Kawazoe; Guoping Chen; Junzo Tanaka; Tetsuya Tateishi; Xingdong Zhang;

作者机构: 1.National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China

2.Biomaterials Center, National Institute Materials Science, Tsukuba, Japan

关键词: surface modification;chondrogenic differentiation;electrostatic property

会议名称: Bioceramics vol.19 pt.2

主办单位:

页码: 1189,1192-

摘要: In this study, three kinds of photo-reactive polymers, namely positively charged azidophenyl-derived polyallylamine (AzPhPAAm), negatively charged azidophenyl-derived poly(acrylic acid) (AzPhPAAc) and neutral azidophenyl-derived poly (ethylene glycol) (AzPhPEG), were synthesized by introduction of photo-reactive group (-N_3) into polyallylamine, poly(acrylic acid) and poly (ethylene glycol), respectively. The structure of the azidophenyl-derived polymers was confirmed by ~1H-NMR measurement. All of the photo-reactive polymers can be pattern-grafted on the surface of cells culture plate, which was confirmed by the optical microscopy observation. The contact angle decreased after surface modification by the photo-reactive polymers. Human mesenchymal stem cells (MSC) cultured on the modified surfaces showed different morphology. The cells adhered and spread more on the PAAm- and PAAc-grafted surfaces than on the PEG-grafted surface. The pellets formed on PAAm- and PEG-grafted surfaces in condrogenic differentiation medium were positively stained by safranin O/ fast green. But the pellet formed on PAAc-grafted surface did not show obviously positive staining for safranin O/ fast green. These results indicate that the PAAm- and PEG-grafted surfaces promoted chondrogenic differentiation of MSC.

分类号: [ "R318.08" , "R318.08"]

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