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基于磁珠分离和DNA标记金纳米粒子探针检测小鼠心肌ATP含量的研究

作者:时间:2016-06-29点击数:

PDF全文下载:2016030245

宗迎夏1a,1b,1c, 危冲2, 混旭1a,1b,1c*

(1.a.肿瘤标志物传感分析教育部重点实验室;b.生态化工国家重点实验室培育基地;c.青岛科技大学 化学与分子工程学院,

山东 青岛266042;2.陕西省汉中市公安局,陕西 汉中723000)

摘要: 利用ATP适体修饰磁珠为分离载体,以电化学试剂结晶紫(CV)适体、CV、ATP适体互补序列修饰的胶体金CV/DNA2/DNA3/AuNPs为探针,建立了测定ATP电化学新方法。方法检测限为10×10-9 mol·L-1,另外,该方法对ATP的测定表现出了良好的选择性。并利用该方法对运动前后小鼠心肌ATP含量进行了测定。

关键词:ATP; 磁珠; 适体;DNA探针

中图分类号:  O 69文献标志码:A

Determination of ATP in Cardiac Musculus Based Magnetic Bead Separation and DNA Labeled Gold Nanoparticles as Probe

ZONG Yingxia1a,1b,1c, WEI Chong2, HUN Xu1a,1b,1c

 (1.a.Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education; b.State Key Laboratory Base of EcoChemical Engineering; c.College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;2.Hanzhong Public Security Bureau, Hanzhong  723000, China)

Abstract: ATP aptamer was immobilized onto the surface of magnetic beads. Then the probe which was labeled with aptamer complementary sequence and crystal violet aptamer was hybridizated onto it. The introduction of ATP induced release of the probe. The electrochemical signal was produced from the released probe. The experimental results demonstrated it can be to detect 10×10-9 mol·L-1  ATP. The method also showed excellent selectivity toward GTP,UTP CTP. The protocol was successfully applied to the determination of ATP in cardiac musculus.

Key words: ATP; magnetic beads; aptamer; DNA probe

收稿日期:20151029

基金项目: 国家自然科学基金项目(21275085,21575073).

作者简介: 宗迎夏(1990—),女,硕士研究生.*通信联系人.

文章编号: 1672   6987(2016)03024504;DOI: 10.16351/j.16726987.2016.03.002

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