Fluorescence polarization gene assay for HIV-DNA based on the use of dendrite-modified gold nanoparticles acting as signal amplifiers
Fluorescence polarization gene assay for HIV-DNA based on the use of dendrite-modified gold nanoparticles acting as signal amplifiers
复制标题
基于使用树突修饰金纳米颗粒作为信号放大器的 HIV-DNA 荧光偏振基因测定
DOI:
10.1007/s00604-018-2673-1
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发表时间:
2018-01
期刊:
影响因子:
--
通讯作者:
Zhao Shulin
中科院分区:
文献类型:
--
作者:
Liang Shuiping;He Guicheng;Tian Jianniao;Zhao Yanchun;Zhao Shulin
The authors describe a fluorescence polarization assay for HIV-DNA. It is based on the use of gold nanoparticles (AuNPs) modified with DNA dendritic macromolecules that act as signal amplifiers. In the presence of HIV-DNA, the AuNP-DNA dendritic macromolecules and fluorescently labeled DNA probe combine with HIV-DNA in a sandwich format to form a conjugate. This reaction slows down the rotational speed of the labeled DNA probe because of the increase of molecular weight and volume. This increases fluorescence polarization and the sensitivity of the system. The relative fluorescence polarization values increase linearly in the 150 pM to 6 nM HIV-DNA concentration range, with a 73 pM detection limit. The results show this amplification strategy to be most useful for ultrasensitive determination of oligonucleotides by means of fluorescence polarization.Graphical abstractSchematic of a novel fluorescence polarization assay for the HIV-DNA. Ultrasensitive detection is accomplished by using AuNP-DNA dendritic macromolecules as signal amplification factor.
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影响因子:
6.1
作者:
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通讯作者:
D'Auria, Sabato
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6.7
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De la Rosa, Elder
影响因子:
7.4
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Haiss, Wolfgang;Thanh, Nguyen T. K.;Fernig, David G.
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Fernig, David G.
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Jia, Ti;Fu, Congying;Jia, Nengqin
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Jia, Nengqin
影响因子:
7.3
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通讯作者:
Al-Abed Y