高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (4): 618.

• 研究论文 • 上一篇    下一篇

用于提取外周血DNA微流控样品预处理芯片的研制

陈兴1, 崔大付1, 刘长春1, 李辉1, 赵卫星2   

  1. 1. 中国科学院电子学研究所传感技术国家重点实验室, 北京 100080;
    2. 北京大学生命科学学院蛋白质和植物基因国家重点实验室, 北京 100871
  • 收稿日期:2005-06-20 出版日期:2006-04-10 发布日期:2006-04-10
  • 通讯作者: 崔大付(1941年出生), 男, 研究员, 博士生导师, 主要从事微流控芯片、 MEMS、 微传感器与微系统的研究. E-mail: dfcui@mail.ie.ac.cn
  • 基金资助:

    国家自然科学基金(批准号: 20299030, 60427001和60501020)资助.

Sample Pretreatment Microfluidic Chip for DNA Extraction from Rat Peripheral Blood

CHEN Xing1, CUI Da-Fu 1*, LIU Chang-Chun1, LI Hui1, ZHAO Wei-Xing2   

  1. 1. State Key Lab of Transducer Tech., Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China; 2. State
    Key Laboratory of Protein and Plant Genetic Engineering, College of  Life Sciences, Peking University, Beijing 100871, China
  • Received:2005-06-20 Online:2006-04-10 Published:2006-04-10
  • Contact: CUI Da-Fu, dfcui@mail.ie.ac.cn

摘要:

基于固相萃取原理和微电子机械系统(Micro-Electro-Mechanical System, MEMS)技术研制了一种多孔氧化硅微流控样品预处理芯片, 并利用具有大比表面积的多孔氧化硅作为提取DNA的固相载体, 从而大大提高了DNA的提取产率. 分析了影响DNA提取产率的因素, 改进了芯片制备工艺和DNA提取实验方案, 成功地提取了小鼠外周血DNA, 提取产率为24 ng/(μL全血), 达到商用试剂盒水平. 同时以该DNA作为PCR扩增模板, 扩增效果良好.

关键词: MEMS; 多孔氧化硅; 微流控样品预处理芯片

Abstract:

A sample pretreatment microfluidic chip was described based on the principle of solid phase extraction(SPE) and the MEMS technology. Oxidized porous silicon with a large surface area as the solid phase matrix for absorption DNA from biologic sample can greatly improve the DNA yield. The factors which can affect the DNA yield were analyzed and the preparation technology and the experiment procedure were improved. The DNA purification process from the rat peripheral blood can be achieved and the DNA yield is 24  ng/(μL whole blood), which can reach the level of the commercial DNA purification kits. Furthermore, the DNA extracted from the whole blood can be amplified by PCR, which can achieve a high efficiency of the amplification.

Key words: MEMS; Oxidized porous silicon; Sample pretreatment microfluidic chip

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