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在纳米级的粒子,可以在更好的药物输送系统?

Can particles at the nanoscale result in better drug delivery systems?
课程网址: http://videolectures.net/slonano07_kristl_pnr/  
主讲教师: Julijana Kristl
开课单位: 卢布尔雅那大学
开课时间: 2008-01-18
课程语种: 英语
中文简介:
由于分子生物技术和生物信息学的进步,新的候选药物分子大量增加。然而,它们运输到实际的作用部位和生物利用度是决定性的问题。为了能够充分输送小的或大的药物分子,将需要一些特殊的配方。材料科学和纳米技术的当前进步有望为这些活性物质开发新一代药物载体用于诊断和治疗目的。今天主要研究脂质体,纳米颗粒,树枝状大分子,纳米管等,其中大小,几何形状,孔隙度,分散性,表面化学是高度定义的。载体组成和结构有望控制生物命运。在讨论中,我们实验室研究的三个实例将用于说明这些要点:制备载药固体脂质纳米粒子,纳米粒子与细胞的相互作用和表面活性剂选择,以产生足够的纳米颗粒,对HEK 293细胞产生最小毒性,同时防止纳米颗粒聚合。这些观察结果表明,在用于药物递送的新型纳米粒子的设计和开发中,诸如组成,大小和表面性质的因素的组合影响生物利用度,对细胞的摄取和毒性。目前的工作重点是这些参数的系统变化,以开发具有设计功能的载体系统。
课程简介: Due to the advances of molecular biotechnology and bioinformatics, there is a strong increase of new candidate drug molecules. However, their transport to the actual site of action and bioavailability are decisive issue. In order to enable adequate delivery of small or larg drug molecules some special formulation will be required. Current advances in material science and nanotechnology promise the development of new generations of drug carriers for these active substances for diagnostic and therapeutic purposes. Today are mostly investigated liposomes, nanoparticles, dendrimers, nanotubes etc. where size, geometry, porosity, dispersity, surface chemistry are highly defined. Carrier composition and structure promises control over biological fate. In the talk three examples studied in our lab will be used to illustrate these points: preparation of drug loaded solid lipid nanoparticles, interactions of nanoparticles with the cells and surfactant selection for adequate nanoparticles production that causes minimal toxicity to HEK 293 cells, while preventing nanoparticles aggregation. These observations indicate that in the design and development of novel nanoparticles for drug delivery a combination of factors such as composition, size and surface properties influence bioavailability, uptake into the cells and toxicity. Current work focuses on systematic variation of these parameters to develop carrier system with designed function.
关 键 词: 纳米技术; 生物信息学; 分子生物技术
课程来源: 视频讲座网
最后编审: 2020-06-29:wuyq
阅读次数: 56