論文 - 詳細
| RRC ID | 18975 |
|---|---|
| 著者 | González-García C, Sousa SR, Moratal D, Rico P, Salmerón-Sánchez M. |
| タイトル | Effect of nanoscale topography on fibronectin adsorption, focal adhesion size and matrix organisation. |
| ジャーナル | Colloids Surf B Biointerfaces |
| Abstract |
Phase separation of PLLA/PS (50/50, w/w) solutions during a spin-casting process gives rise to well-defined nanotopographies of 14, 29 and 45 nm deep pits depending on the concentration of the solution. Their influence on the biological activity of fibronectin (FN) was investigated. FN adsorption was quantified by radiolabelling the protein. The amount of adsorbed FN was higher on the 14 nm deep pit nanotopography than on the other two surfaces. FN distribution between valleys and peaks was investigated by AFM combined with image analysis. FN tends to adsorb preferentially on the valleys of the nanotopography only for the 14 nm system and when adsorbed from solutions of concentration lower than 10 microg/ml. Higher concentration of the FN solution leads to evenly distribution of the protein throughout the surface; moreover, there is no difference in the distribution of the protein between valleys and peaks for the other two systems (29 and 45 nm) irrespective of the concentration of the FN solution. The biological activity of the adsorbed protein layer was assessed by investigating MC3T3 osteoblast-like cells adhesion, FN reorganisation and late matrix formation on the different substrates. Even if initial cell adhesion is excellent for every substrate, the size of the focal adhesion plaques increases as the size of the pits in the nanotopography does. This is correlated to FN reorganisation, which only takes places on the 29 and 45 nm deep pits surfaces, where enhanced late matrix production was also found. |
| 巻・号 | 77(2) |
| ページ | 181-90 |
| 公開日 | 2010-6-1 |
| DOI | 10.1016/j.colsurfb.2010.01.021 |
| PII | S0927-7765(10)00061-5 |
| PMID | 20185279 |
| MeSH | 3T3 Cells Adsorption Animals Cell Adhesion Cell Line Fibronectins / chemistry* Focal Adhesions / chemistry* Humans Image Processing, Computer-Assisted Mice Microscopy, Atomic Force / methods Nanotechnology / methods Osteoblasts / cytology Proteins / chemistry Surface Properties |
| IF | 4.389 |
| 引用数 | 84 |
| WOS 分野 | BIOPHYSICS CHEMISTRY, PHYSICAL MATERIALS SCIENCE, BIOMATERIALS |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 各媒体での言及数の合計 | 0 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| ヒト・動物細胞 | MC3T3-E1(RCB1126) |