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In-Flow Extraction of RNA in Extracellular Vesicles Using a Silicon-Based Microfluidic Device

机译:使用硅基微流体装置在细胞外囊泡中的流动提取RNA

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Extracellular vesicles (EVs) transport proteins, signaling lipids, and nucleic acids from donor cells to recipient cells, therefore have been verified to serve as mediators of intercellular communications. EV-resident RNAs have been widely used as biomarkers of disease and prognostic indicators. Thus, in situ extraction of RNAs in a microfluidic flow is of great importance for developing integrated microsystems to realize on-chip PCR. This paper presents a silicon-based microfluidic device for solid-phase extraction of EV-resident RNAs. The microfluidic device contains micro-pillar arrays within an area of 0.25cm2 on the silicon substrate, different structures with various surface-to-volume ratio (SVR) are investigated to compare their RNA extraction efficiencies. A 20% extraction efficiency is obtained and characterized by using a Nanodrop UV-Vis spectrophotometer. The proposed on-chip extraction of EV-resident RNAs would provide new approaches to develop integrated microfluidic systems to realize PCR for point-of-care applications.
机译:因此,已经验证了从供体细胞到受体细胞的供体细胞的细胞外囊泡(EVS)转运蛋白,信号脂质和核酸,以用作细胞间通信的介质。 EV-驻留RNA已被广泛用作疾病和预后指标的生物标志物。因此,在微流体流动中原位提取RNA对于开发集成的MicroSystems来实现芯片上的PCR,这是非常重要的。本文介绍了一种基于硅基微流体装置,用于EV-驻留RNA的固相提取。微流体装置包含在0.25cm的面积内的微柱阵列 2 在硅衬底上,研究了具有各种面对体积比(SVR)的不同结构以比较它们的RNA提取效率。使用NanoDrop UV-Vis分光光度计获得和表征20%的提取效率。 EV-驻留RNA的提出的片上提取将提供新的方法,以开发集成的微流体系统,以实现PCR的护理措施应用。

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