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A novel polypeptide-modified fluorescent gold nanoclusters for copper ion detection

Biomolecule-functionalized fluorescent gold nanocluster (AuNCs) have attracted a lot of attention due to good biocompatibility, stable physicochemical properties and considerable cost advantages. Inappropriate concentration of Cu(2+) may cause a variety of diseases. In this study, AuNCs were synthes...

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Autores principales: Zhuang, Hong, Jiang, Xinyu, Wu, Sijia, Wang, Shujin, Pang, Yong, Huang, Yanjun, Yan, Haiyang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9033799/
https://www.ncbi.nlm.nih.gov/pubmed/35459921
http://dx.doi.org/10.1038/s41598-022-10500-9
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author Zhuang, Hong
Jiang, Xinyu
Wu, Sijia
Wang, Shujin
Pang, Yong
Huang, Yanjun
Yan, Haiyang
author_facet Zhuang, Hong
Jiang, Xinyu
Wu, Sijia
Wang, Shujin
Pang, Yong
Huang, Yanjun
Yan, Haiyang
author_sort Zhuang, Hong
collection PubMed
description Biomolecule-functionalized fluorescent gold nanocluster (AuNCs) have attracted a lot of attention due to good biocompatibility, stable physicochemical properties and considerable cost advantages. Inappropriate concentration of Cu(2+) may cause a variety of diseases. In this study, AuNCs were synthesized in alkaline aqueous solution using bovine serum albumin (BSA) as a template. And then, the peptide CCYWDAHRDY was coupled to AuNCs. Furthermore, the fluorescence of synthesized CCYWDAHRDY-AuNCs response to Cu(2+) was evaluated. As the results shown that the CCYWDAHRDY-AuNCs can sensitively detect Cu(2+). After adding Cu(2+) to the probe system, the fluorescence of the CCYWDAHRDY-AuNCs was quenched. The detection conditions were at pH 6 and 30 °C for 10 min, the linear relationship between Cu(2+) concentration and fluorescence intensity were good in the range of 0.1 ~ 4.2 μmol/L. The regression equation was y = − 105.9x + 693.68, the linear correlation coefficient is 0.997, and the minimum detection limit was 52 nmol/L.
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spelling pubmed-90337992022-04-25 A novel polypeptide-modified fluorescent gold nanoclusters for copper ion detection Zhuang, Hong Jiang, Xinyu Wu, Sijia Wang, Shujin Pang, Yong Huang, Yanjun Yan, Haiyang Sci Rep Article Biomolecule-functionalized fluorescent gold nanocluster (AuNCs) have attracted a lot of attention due to good biocompatibility, stable physicochemical properties and considerable cost advantages. Inappropriate concentration of Cu(2+) may cause a variety of diseases. In this study, AuNCs were synthesized in alkaline aqueous solution using bovine serum albumin (BSA) as a template. And then, the peptide CCYWDAHRDY was coupled to AuNCs. Furthermore, the fluorescence of synthesized CCYWDAHRDY-AuNCs response to Cu(2+) was evaluated. As the results shown that the CCYWDAHRDY-AuNCs can sensitively detect Cu(2+). After adding Cu(2+) to the probe system, the fluorescence of the CCYWDAHRDY-AuNCs was quenched. The detection conditions were at pH 6 and 30 °C for 10 min, the linear relationship between Cu(2+) concentration and fluorescence intensity were good in the range of 0.1 ~ 4.2 μmol/L. The regression equation was y = − 105.9x + 693.68, the linear correlation coefficient is 0.997, and the minimum detection limit was 52 nmol/L. Nature Publishing Group UK 2022-04-22 /pmc/articles/PMC9033799/ /pubmed/35459921 http://dx.doi.org/10.1038/s41598-022-10500-9 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Zhuang, Hong
Jiang, Xinyu
Wu, Sijia
Wang, Shujin
Pang, Yong
Huang, Yanjun
Yan, Haiyang
A novel polypeptide-modified fluorescent gold nanoclusters for copper ion detection
title A novel polypeptide-modified fluorescent gold nanoclusters for copper ion detection
title_full A novel polypeptide-modified fluorescent gold nanoclusters for copper ion detection
title_fullStr A novel polypeptide-modified fluorescent gold nanoclusters for copper ion detection
title_full_unstemmed A novel polypeptide-modified fluorescent gold nanoclusters for copper ion detection
title_short A novel polypeptide-modified fluorescent gold nanoclusters for copper ion detection
title_sort novel polypeptide-modified fluorescent gold nanoclusters for copper ion detection
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9033799/
https://www.ncbi.nlm.nih.gov/pubmed/35459921
http://dx.doi.org/10.1038/s41598-022-10500-9
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