| Project/Area Number |
11558108
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Biomedical engineering/Biological material science
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| Research Institution | The University of Tokushima |
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Principal Investigator |
ITO Yoshihiro The University of Tokushima, Faculty of Engineering, Professor, 工学部, 教授 (40192497)
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| Co-Investigator(Kenkyū-buntansha) |
小出 隆規 徳島大学, 工学部, 講師 (70322253)
川添 直輝 徳島大学, 工学部, 助手 (90314848)
河村 健二 秋田住友ベーク株式会社, 研究員
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| Project Period (FY) |
1999 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥13,300,000 (Direct Cost: ¥13,300,000)
Fiscal Year 2001: ¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2000: ¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 1999: ¥6,000,000 (Direct Cost: ¥6,000,000)
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| Keywords | Cell culture / Cell design / Material design / Immobilization / Biosignal Molecules / 成長因子固定化 / ヘパリン固定化 / ゼラチン固定化 / 光リソグラフィ / 細胞成長 / 細胞分化 / バイオマテリアル / 臓器再生 / ハイブリッド人工臓器 / 情報伝達分子 / 上皮細胞成長因子(EGF) / 光固定化 / 光リソグラフ法 / EGFレセプター遺伝子 |
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| Research Abstract |
For regenerative medicine, cell culture without serum or feeder cells from animal sources is needed. In the present study, cell culture system was constructed using cell design by gene transfection and material design by immobilization of biosignal molecules.
1) Chinese hamster ovary cell coexpressiong erythropoietin and epidermal growth factor (EGF) receptor was designed and prepared. The cell was cultured on the plate immobilized with EGF. The growth rate was highly accelerated in the presence of immobilized EGF and the amount of secreted erythropoietin was increased.
2) Gradient-micropattern immobilization of EGF, heparin, and thermo-responsive polymers was carried out. Growth of CHO cells overexpressing EGF receptor was significantly enhanced only on the high density of immobilized EGF. The growth of NIH3T3 cells was enhanced only on the high density of immobilized heparin in the presence of basic fibroblast growth factor (bFGF). It was considered that bFGF was activated on the heparin-immobilized regions. Detachment of cells cultured on the thermo-responsive polymer-immobilized surface was regulated by temperature control. In addition, the detachment was dependent on the gradient pattern. The gradient micropattern immobilization is considered to an important tool for investigation of the effect of immobilized molecules.
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