通过电极结合构建的核酸纳米结构,用于广泛的分析物的电化学检测
Subramaniam Somasundaram1, Christopher J Easley1
1Department of Chemistry and Biochemistry , Auburn University , Auburn , Alabama 36849 , United States.
Journal of the American Chemical Society
|July 2, 2019
概括
这项研究引入了一种新的酶催化DNA纳米结构探针,用于成本效益高,多功能电化学测试. 该平台简化了生物标志物的量化,包括免疫抑制药物 tacrolimus,在复杂的样本,如人体血清.
科学领域:
- 生物医学工程
- 分析化学
- 纳米技术
背景情况:
- 有效的临床检测需要经济,简单和可通用的方法.
- 现有的基于电化学的DNA传感器面临着探测成本和对多种生物标志物的广泛多重结合的需求.
- 需要一种多功能和简化的探头构造策略,以扩大电化学DNA传感器的适用性.
研究的目的:
- 在电极表面使用酶催化结构开发多功能DNA纳米结构探针.
- 在电化学测试中绕过复杂的多重结合方案.
- 证明该平台对包括蛋白质和小分子在内的广泛生物标志物的有效性.
主要方法:
- 直接在电极表面上进行酶催化探针构造.
- 开发一种多功能DNA纳米结构探针.
- 通过电化学量化测定 streptavidin,anti-digoxigenin,anti-tacrolimus,biotin,digoxigenin 和 tacrolimus 的有效性.
- 在最小稀释的人体血清中进行测试.
主要成果:
- 通过酶催化表面结构成功创建了一种全新的多功能DNA纳米结构探针.
- 该平台能够使用单个探针类型量化多种分析物,包括蛋白质和小分子.
- 在治疗指数范围内首次实现了电化学定量.
- 探针在最小稀释的人体血清中显示稳定性和灵敏性.
结论:
- 酶催化探针结构为电化学DNA传感器提供了一种简化和多功能途径.
- 这种方法解决了探测成本和通用性问题,使广泛的生物标志物定量成为可能.
- 开发的平台有望用于临床应用,包括对塔克罗利的治疗药物监测.
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