高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (7): 1185.

• 论文 • 上一篇    下一篇

用表面等离子体子共振传感器测定人心肌肌钙蛋白I的研究

宋大千1, 刘霞1, 赵丽巍1, 张寒琦1, 魏景艳2,3, 牟颖2, 罗贵民2   

  1. 1. 吉林大学化学学院, 长春 130023;
    2. 吉林大学分子酶学工程教育部重点实验室, 长春 130023;
    3. 吉林省临床检验中心, 长春 130021
  • 收稿日期:2002-07-05 出版日期:2003-07-24 发布日期:2003-07-24
  • 通讯作者: 张寒琦(1948年出生),男,教授,博士生导师,从事光谱化学分析研究.E-mail:analchem@jlu.edu.cn E-mail:analchem@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:29875010)资助

An Optical Biosensor Based on Surface Plasmon Resonance for Determination of Human Cardiac Troponin I

SONG Da-Qian1, LIU Xia1, ZHAO Li-Wei1, ZHANG Han-Qi1, WEI Jing-Yan2,3, MU Ying2, LUO Gui-Min2   

  1. 1. College of Chemistry;
    2. Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, Jilin University, Changchun 130023, China;
    3. Jilin Province Center of Clinical Laboratory, Changchun 130021, China
  • Received:2002-07-05 Online:2003-07-24 Published:2003-07-24

摘要: 采用自组装表面等离子体子共振(SPR)传感装置,固定入射角,以波长为变量,以CCD为检测系统,用对金和抗体均有较强吸附作用的葡萄球菌A蛋白作为基底膜,观测了人心肌肌钙蛋白I的抗体和抗原之间免疫反应的动力学过程,并进行了人心肌肌钙蛋白I的定量测定.结果表明,人心肌肌钙蛋白I的浓度在5.0~50μg/L范围内与传感器的响应值呈线性关系.

关键词: 表面等离子体子共振, 传感器, 人心肌肌钙蛋白I

Abstract: A novel optical biosensor based on simultaneous multi-wavelength detection surface plasmon resonance(SPR) was developed for diagnosing acute myocardial infaction. The sensor was designed on the basis of fixing the angle of incidence and measuring the reflected intensities in the wavelength range of 400-800 nm. The SPR spectra are shown in terms of reflected light intensity verus wavelength of incident light. The intensity of the reflected light is the minimum at the resonant wavelength. On the sensing element of a right angle the glass prism is a thin(50 nm) metallic gold film coated by vacuum-deposition. Molecular self-assembling in solution is used to form the sensing membrane on the gold substrate. Human cardiac troponin I was determined in the concentration range of 5.0-50 μg/L. Under the selected experimental conditions, the sensor has a good sensitivity, repeatability, reversibility and selectivity.

Key words: Surface plasmon resonance, Sensor, Human cardiac troponin I

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