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Adsorption, encapsulated solute leakage and microflow of giant vesicles during anhydrobiotic preservation in trehalose solutions

机译:海藻糖溶液中脱水保存过程中吸附,包封溶质渗漏和巨大囊泡微流

摘要

Inspired by the variety of organisms that are naturally desiccation tolerant, anhydrobiotic preservation potentially furnishes a means of processing and storing mammalian cells in a state of "suspended animation" at ambient conditions in carbohydrate glasses. Although there have been promising applications of this technique, especially when employing the disaccharide trehalose, the ultimate goal of room temperature long-term storage has thus far not been achieved -- at least in part owing to an incomplete understanding of the fundamental cellular damage mechanisms. Although there have been many studies examining the thermodynamics of relevance to anhydrobiotic preservation, particularly with regard to lipid phase and the effect of carbohydrates thereupon, comparatively little attention has been paid to the effect of transport kinetics on preservation success. Further, although cells are typically dried in carbohydrate solutions on a solid support, there are few studies on the role played by the support. This work seeks to help remedy such deficiencies. First, considering damage mechanisms at the individual cell level, giant liposomes were employed as a model cell system, given that the cell membrane is a key damage site.
机译:受天然耐受干燥的多种生物的启发,对水生生物的保存可能提供了一种在环境条件下将碳水化合物细胞以“悬浮动画”的状态加工和储存在碳水化合物杯中的手段。尽管这项技术有广阔的应用前景,尤其是在使用二糖海藻糖时,但迄今为止仍未实现室温长期保存的最终目的-至少部分是由于对基本的细胞损伤机制的不完全了解。尽管有许多研究研究了与无水生物保存有关的热力学,特别是关于脂质相及其上碳水化合物的影响,但对运输动力学对保存成功的影响的关注却很少。此外,尽管通常将细胞在固体支持物上的碳水化合物溶液中干燥,但是很少有关于支持物发挥作用的研究。这项工作旨在帮助纠正此类缺陷。首先,考虑到单个细胞水平的损伤机制,考虑到细胞膜是关键的损伤部位,采用巨型脂质体作为模型细胞系统。

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