A Novel Detection Method of Human Serum Albumin Based on the Poly(Thymine)-Templated Copper Nanoparticles.

A Novel Detection Method of Human Serum Albumin Based on the Poly(Thymine)-Templated Copper Nanoparticles.
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基于聚胸腺嘧啶模板铜纳米粒子的人血清白蛋白检测新方法。

DOI:
10.3390/s17112684
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发表时间:
2017-11-21
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Ma C
Ma C
中科院分区:
其他
文献类型:
--
作者:
Chen M;Xiang X;Wu K;He H;Chen H;Ma C

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在这项工作中,我们建立了一种简便的荧光定量检测人血清白蛋白(HSA)的方法,基于聚胸腺嘧啶(聚T)模板铜纳米颗粒(CuNPs)在HSA存在下的抑制作用。在正常情况下,以聚T为模板的CuNPs具有很强的荧光,其激发/发射峰位于340/610 nm。但是,在人血清白蛋白存在的情况下,它会吸附铜离子,从而阻止铜纳米粒子的形成。因此,在HSA存在的情况下,荧光强度会明显降低。被分析物HSA浓度与CuNPs的荧光强度呈线性关系。该方法的检出限为8.2×10~(-8)−·L·−~(-1),并用于生物样品中人血清白蛋白的测定。因此,这种方法在医疗诊断和生物医学研究中具有潜在的应用价值。
In this work, we developed a facile fluorescence method for quantitative detection of human serum albumin (HSA) based on the inhibition of poly(thymine) (poly T)-templated copper nanoparticles (CuNPs) in the presence of HSA. Under normal circumstances, poly T-templated CuNPs can display strong fluorescence with excitation/emission peaks at 340/610 nm. However, in the presence of HSA, it will absorb cupric ion, which will prevent the formation of CuNPs. As a result, the fluorescence intensity will become obviously lower in the presence of HSA. The analyte HSA concentration had a proportional linear relationship with the fluorescence intensity of CuNPs. The detection limit for HSA was 8.2 × 10−8 mol·L−1. Furthermore, it was also successfully employed to determine HSA in biological samples. Thus, this method has potential applications in point-of-care medical diagnosis and biomedical research.
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