Facile synthesis of red emitting 3-aminophenylboronic acid functionalized copper nanoclusters for rapid, selective and highly sensitive detection of glycoproteins

Copyright © 2016 Elsevier B.V. All rights reserved..

As an emerging class of fluorescent probes, copper nanoclusters (Cu NCs) have been considered as an intriguing candidate for detecting biomoleculars due to their outstanding fluorescent properties, excellent biocompatibility and low cost. Herein, we fabricated bovine serum albumin (BSA) protected Cu NCs (BSA-Cu NCs) and further functionalized them with 3-aminophenylboronic acid (APBA) for selectively discerning glycoproteins. In aqueous solution, Cu(2+) ions were directly reduced into BSA-Cu NCs by hydrazine hydrate (N2H4·H2O) at room-temperature using BSA as the capping agent. The synthetic process was very rapid, simple and easy for controlling due to the lack of any other complicated procedure such as heating and adjusting the pH value of the reactive mixture. The APBA-Cu NCs showed strong fluorescent emission at 630nm in the red range. So it can effectively avoid the disturbance of auto-fluorescence in biosamples. The fluorescence of the APBA-Cu NCs was obviously quenched by glycoprotein samples. Then, the APBA-Cu NCs were employed as a probe for selective capture and sensitive detection of glycoproteins with a wide linear range of 5-220nM and a low detection limit of 2.60nM owing to the covalent reaction between the boric acid group of APBA and the cis-glycol groups of the glycoproteins. The developed method was also successfully applied to determine glycoproteins in egg white of chickens and human urine samples with quantitative spike recoveries from 95% to 104%.

Medienart:

E-Artikel

Erscheinungsjahr:

2016

Erschienen:

2016

Enthalten in:

Zur Gesamtaufnahme - volume:86

Enthalten in:

Biosensors & bioelectronics - 86(2016) vom: 15. Dez., Seite 270-276

Sprache:

Englisch

Beteiligte Personen:

Li, Xin-Ge [VerfasserIn]
Zhang, Fei [VerfasserIn]
Gao, Ya [VerfasserIn]
Zhou, Qing-Meng [VerfasserIn]
Zhao, Ye [VerfasserIn]
Li, Yan [VerfasserIn]
Huo, Jian-Zhong [VerfasserIn]
Zhao, Xiao-Jun [VerfasserIn]

Links:

Volltext

Themen:

27432CM55Q
3-aminobenzeneboronic acid
30418-59-8
789U1901C5
Boracic acid functionalization
Boronic Acids
Copper
Copper nanoclusters
Facile synthesis
Fluorescent Dyes
Glycoproteins
Journal Article
Serum Albumin, Bovine

Anmerkungen:

Date Completed 06.02.2017

Date Revised 16.11.2017

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.bios.2016.06.054

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM262040581