基于NaYF<sub>4</sub>:Yb,Er上转换荧光纳米颗粒精准检测DNA

引用本文: 毛兰兰, 张立明, 邓燕, 吕卓璇, 何农跃. 基于NaYF₄:Yb,Er上转换荧光纳米颗粒精准检测DNA[J]. 无机化学学报, 2016, 32(12): 2095-2101. doi: 10.11862/CJIC.2016.271 shu

Citation: MAO Lan-Lan, ZHANG Li-Ming, DENG Yan, LÜ Zhuo-Xuan, HE Nong-Yue. Accurate Detection of DNA Based on the NaYF₄: Yb, Er Upconversion Nanoparticles[J]. Chinese Journal of Inorganic Chemistry, 2016, 32(12): 2095-2101. doi: 10.11862/CJIC.2016.271 shu

基于NaYF₄:Yb,Er上转换荧光纳米颗粒精准检测DNA

毛兰兰 ^1, ,
张立明 ^1, ,
邓燕 ^1, ,
吕卓璇 ^{1,
,} ,
何农跃 ^{1,2,
,}

1.
1 湖南工业大学绿色化学与生物纳米技术应用湖南省重点实验室, 湖南省高等学校2011协同创新中心"经济林培育与利用"生物芯片分中心, 株洲 412007;
2.
2 东南大学生物电子学国家重点实验室, 南京 210096

通讯作者: 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn; 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn

基金项目:
国家自然科学基金（No.61301039，61471168，61527806)

湖南省2011高等学校协同创新中心（No.湘教通[2013]448号）资助项目。

摘要: 建立了一种利用碱基堆积原理并以上转换纳米粒子荧光作为内参的精准检测DNA的方法。该方法首先利用热分解法制备NaYF₄：Yb，Er上转换荧光纳米颗粒（upconversion nanoparticles，UCNPs），再通过表面羧基化变性牛血清蛋白修饰后与氨基化探针核酸单链共价偶联，形成上转换荧光标记显示探针。最后再基于碱基堆积原理进行杂交检测。研究结果表明以NaYF₄：Yb，Er荧光强度为内参，根据FAM/UCNP的强度比来定量检测目标DNA浓度比单一的以报告DNA中FAM荧光强度定量检测目标DNA浓度要更为精准，有效地避免了实验中出现的人为操作和仪器误差。本方法不需要进行扩增，检测底限可达到5 nmol·L^-1，且在较大的浓度范围内有较好的线性关系，同时该方法也有着良好的特异性，能有效区分单碱基错配序列。

关键词:

NaYF₄:Yb,Er;DNA检测;内参;精准性

English

Accurate Detection of DNA Based on the NaYF₄: Yb, Er Upconversion Nanoparticles

1.
1 Economical Forest Cultivation and Utilization of 2011 Collaborative Innovation Center in Hunan Province, Hunan Key Laboratory of Green Chemistry and Application of Biological Nanotechnology, Hunan University of Technology, Zhuzhou, Hunan 412007 China;
2.
2 State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China

Corresponding author: 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn; 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn

Received Date: 09 April 2016
Fund Project:
国家自然科学基金（No.61301039，61471168，61527806)

湖南省2011高等学校协同创新中心（No.湘教通[2013]448号）资助项目。

Abstract: A new method for improving the accuracy of DNA detection has been developed, which was based on the base stacking principle and the fluorescence of NaYF₄:Yb, Er UCNPs. Firstly, the NaYF₄:Yb, Er UCNPs were synthesized by thermal decomposition method and functionalized with denatured bovine serum albumin. Then, the denatured bovine serum albumin-functionalized OA/NaYF₄:Yb, Er UCNPs were conjugated with amino group-modified DNA probes to form upconversion fluorescence labeled probes and detect DNA. The results showed that the method of using the fluorescence of NaYF₄:Yb, Er UCNPs as a reference standard to quantitatively detect target DNA concentration had higher accuracy than that of only using a single FAM fluorescence intensity, and the operation and equipment errors was effectively avoid during the experiment. Moreover, this method can reach the detection limit as low as 5 nmol·L^-1 without amplification, displays a good linear relationship in wide concentration range and a high specificity, and also can effectively differenciate single-base mismatch sequences.

Key words:

NaYF₄:Yb, Er;DNA detection;reference standard;accuracy

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

基于NaYF₄:Yb,Er上转换荧光纳米颗粒精准检测DNA

通讯作者: 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn; 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn

English

Accurate Detection of DNA Based on the NaYF₄: Yb, Er Upconversion Nanoparticles

Corresponding author: 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn; 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn

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基于NaYF4:Yb,Er上转换荧光纳米颗粒精准检测DNA

通讯作者: 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn; 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn

English

Accurate Detection of DNA Based on the NaYF4: Yb, Er Upconversion Nanoparticles

Corresponding author: 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn; 吕卓璇,E-mail:luzhuoxuan1981@163.com;何农跃,E-mail:nyhe@seu.edu.cn

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CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

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通讯作者: 陈斌, bchen63@163.com

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基于NaYF₄:Yb,Er上转换荧光纳米颗粒精准检测DNA

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