高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (1): 40.

• 研究快报 • 上一篇    下一篇

超顺磁性DNA纳米富集器应用于痕量寡聚核苷酸的富集

何晓晓, 王柯敏, 谭蔚泓, 刘斌, 李杜, 黄杉生   

  1. 湖南大学化学生物传感与计量学国家重点实验室, 湖南大学化学化工学院, 湖南大学生物技术研究院, 长沙 410082
  • 收稿日期:2002-09-16 出版日期:2003-01-24 发布日期:2003-01-24
  • 通讯作者: 王柯敏(1957年出生),男,博士,教授,博士生导师,从事纳米尺度和单分子水平上生物分析化学的研究.E-mail:kmw ang@hnu.net.cn E-mail:kmw ang@hnu.net.cn
  • 基金资助:

    科技部基础研究重大项目前期研究专项基金(批准号:2001-51);国家自然科学基金重点项目(批准号:20135010);教育部重大项目基金(批准号:2000-156)资助

Concentration of Trace Amounts Oligonucleotide Using Super-paramagnetic DNA Nano-enricher

HE Xiao-Xiao, WANG Ke-Min, TAN Wei-Hong, LIU Bin, LI Du, HUANG Shan-Sheng   

  1. State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry & Chemical Engineering, Institute of Biological Technology, Hunan University, Changsha 410082, China
  • Received:2002-09-16 Online:2003-01-24 Published:2003-01-24

关键词: 富集, DNA, 超顺磁性纳米颗粒, 纳米富集器

Abstract: The present paper covers a novel technology for the concentration of trace amounts of target oligonucleotide from the solution. This technique is based on a super-paramagnetic DNA nano-enricher constructed with a single strand DNA probe immobilized onto the surface of the super-paramagnetic nanoparticles prepared by using the water-in-oil microemulsion technique, employing silica as the shell and iron oxide as the core of the super-paramagnetic nanoparticles. The silica coated magnetic nanoparticles are (40±4) nm in size. And the magnetic nanoparticle is super-paramagnetic. Biotin labeled ssDNA(Biotin-5-(A)10-GAT-TCA-CGA-GGC-CCT-AGT-CG-3') was immobilized on the surface of silica coated magnetic nanoparticles. The complementary ssDNA could be enriched effectively and the characteristics of the enriched ssDNA have not changed, which will provide a novel technique and measurement for gene transfection, mutation detection, gene diagnosis, gene therapy and so on.

Key words: Concentration, DNA, Superparamagnetic nanoparticles, Nano-enricher

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