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Development of a cellular fiber spinning technology for regenerative medicine.

机译:开发用于再生医学的细胞纤维纺丝技术。

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The prolonged success of cellular encapsulation in delivering insulin to treat Type I Diabetes has encouraged researchers to conceptualize ways in which cellular encapsulation can be implemented in an array of other clinical applications. This thesis investigated the development of a novel in-house textile hollow fiber spinning process in order to encapsulate cells. After development of the cellular encapsulation methods, a 21 day in vitro macroscopic evaluation was employed to confirm cellular viability and quantify the metabolic activity response of green fluorescent protein (GFP) labeled bovine mammary epithelial cells (MAC-Ts) that were either suspended in a low viscosity sodium alginate based solution, manually injected into the lumen of the hollow fiber (MI method), and later immobilized through a gelation process; or pre-mixed and co-extruded with a medium viscosity sodium alginate based solution (CO-X method), and immobilized inside the walls of the hollow fiber. No decrease in fluorescence was observed, and it was found that the CO-X and MI methods provided total lactic acid productions of 1.6 and 1.5 g/L glucose consumptions of 6.1 and 4.0 g/L, respectively, after 21 days of culturing. Histomorphological analyses revealed that the average cell area of MAC-Ts increased 25 and 88% after 21 days of encapsulation under the CO-X and MI methods, respectively. There was little to no evidence of cell clusters, and oval, cobblestone morphologies. Based on our findings, it is concluded that our novel in-house textile hollow fiber spinning process can be used to encapsulate cells using the CO-X and MI methods.
机译:细胞封装在递送胰岛素以治疗I型糖尿病方面的长期成功鼓励研究人员构思出可以在一系列其他临床应用中实现细胞封装的方法。本文研究了一种新型的内部纺织中空纤维纺丝工艺,以包裹细胞。在开发出细胞封装方法之后,采用了21天的体外宏观评估来确认细胞活力并量化绿色荧光蛋白(GFP)标记的牛乳腺上皮细胞(MAC-Ts)的代谢活性反应,它们悬浮在低粘度海藻酸钠基溶液,手动注入中空纤维腔中(MI方法),然后通过胶凝过程固定化;或与中等粘度的海藻酸钠基溶液预混合并共挤出(CO-X法),并固定在中空纤维壁的内部。在培养21天后,未观察到荧光的降低,并且发现CO-X和MI方法提供的总乳酸产量分别为1.6和1.5g / L,葡萄糖消耗分别为6.1和4.0g / L。组织形态学分析显示,在用CO-X和MI方法包封21天后,MAC-T的平均细胞面积分别增加了25%和88%。几乎没有甚至没有细胞簇,椭圆形,鹅卵石形态的证据。根据我们的发现,可以得出结论,我们的新型内部纺织中空纤维纺丝工艺可用于使用CO-X和MI方法封装细胞。

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