FITC functionalized magnetic core-shell Fe3O4/Ag hybrid nanoparticle for selective determination of molecular biothiols

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	FITC functionalized magnetic core-shell Fe3O4/Ag hybrid nanoparticle for selective determination of molecular biothiols
	Chen, Ling 1,5; Li, Jinhua1 ; Wang, Shasha 1,5; Lu, Wenhui 1; Wu, Aiguo 2,3; Choo, Jaebum 4; Chen, Lingxin1
刊名	SENSORS AND ACTUATORS B-CHEMICAL
	2014-03-01
卷号	193 页码:857-863
关键词	Molecular biothiols Chromogenic detection Silver coated magnetic nanoparticles Fluorescein isothiocyanate Living cells
ISSN号	0925-4005
通讯作者	Chen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China. lxchen@yic.ac.cn
产权排序	[Chen, Ling; Li, Jinhua; Wang, Shasha; Lu, Wenhui; Chen, Lingxin] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China; [Wu, Aiguo] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China; [Wu, Aiguo] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Div Funct Mat & Nanodevices, Ningbo 315201, Peoples R China; [Choo, Jaebum] Chinese Acad Sci, Dept Bionano Technol, Ningbo 315201, Peoples R China; [Chen, Ling; Wang, Shasha] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
中文摘要	A sensing strategy for chromogenic detection of molecular biothiols has been proposed based on fluorescein isothiocyanate (FITC) functionalized magnetic core-shell Fe3O4/Ag hybrid nanoparticles. Ag coated magnetic Fe3O4 nanoparticles were initially synthetized. FITC was subsequently conjugated on the surface of core-shell nanoparticles by Ag-SCN linkage and then the fluorescence of FITC was quenched. Upon addition of molecular biothiols, since the Ag S bond is stronger than Ag-SCN, a place-displacement between thiols and FITC would occur and thereby the fluorescence of FITC would recover. Thus, a fluorescence "off-on" probe was attained by virtue of biothiols, so after magnetic separation, the fluorescence signal change of FITC in clear solution could be employed for quantitative determination of typical molecular biothiols such as glutathione (GSH) and cysteine (Cys). High sensitivity was obtained with the detection limits of 10 nM and 20 nM for GSH and Cys, respectively. As well as, the assay strategy presented excellent selectivity toward molecular biothiols against other amino acids. Furthermore, confocal imaging was achieved in living cells, indicating that this fluorescent probe is potentially applicable for imaging molecular thiols in biological systems. (C) 2013 Elsevier B.V. All rights reserved.
英文摘要	A sensing strategy for chromogenic detection of molecular biothiols has been proposed based on fluorescein isothiocyanate (FITC) functionalized magnetic core-shell Fe3O4/Ag hybrid nanoparticles. Ag coated magnetic Fe3O4 nanoparticles were initially synthetized. FITC was subsequently conjugated on the surface of core-shell nanoparticles by Ag-SCN linkage and then the fluorescence of FITC was quenched. Upon addition of molecular biothiols, since the Ag S bond is stronger than Ag-SCN, a place-displacement between thiols and FITC would occur and thereby the fluorescence of FITC would recover. Thus, a fluorescence "off-on" probe was attained by virtue of biothiols, so after magnetic separation, the fluorescence signal change of FITC in clear solution could be employed for quantitative determination of typical molecular biothiols such as glutathione (GSH) and cysteine (Cys). High sensitivity was obtained with the detection limits of 10 nM and 20 nM for GSH and Cys, respectively. As well as, the assay strategy presented excellent selectivity toward molecular biothiols against other amino acids. Furthermore, confocal imaging was achieved in living cells, indicating that this fluorescent probe is potentially applicable for imaging molecular thiols in biological systems. (C) 2013 Elsevier B.V. All rights reserved.
学科主题	Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
研究领域[WOS]	Chemistry ; Electrochemistry ; Instruments & Instrumentation
关键词[WOS]	PERFORMANCE LIQUID-CHROMATOGRAPHY ; QUINONE MODIFIED ELECTRODE ; CAPILLARY-ELECTROPHORESIS ; ELECTROCHEMICAL DETECTION ; ALZHEIMERS-DISEASE ; FLUORESCENT-PROBE ; LIVING CELLS ; HUMAN PLASMA ; THIOLS ; CYSTEINE
收录类别	SCI
资助信息	Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry; Chinese Academy of Sciences [KZCX2-EW-206]; National Research Foundation of Korea [R11-2008-0061852, K20904000004-12A0500-00410]; Program of Zhejiang Provincial Natural Science Foundation of China [R5110230]; 100 Talents Program of the Chinese Academy of Sciences
原文出处	http://dx.doi.org/10.1016/j.snb.2013.12.053
语种	英语
WOS记录号	WOS:000330113600119
公开日期	2014-07-08
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/6902]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 2.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China 3.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Div Funct Mat & Nanodevices, Ningbo 315201, Peoples R China 4.Chinese Acad Sci, Dept Bionano Technol, Ningbo 315201, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen, Ling,Li, Jinhua,Wang, Shasha,et al. FITC functionalized magnetic core-shell Fe3O4/Ag hybrid nanoparticle for selective determination of molecular biothiols[J]. SENSORS AND ACTUATORS B-CHEMICAL,2014,193:857-863.
APA	Chen, Ling.,Li, Jinhua.,Wang, Shasha.,Lu, Wenhui.,Wu, Aiguo.,...&Chen, Lingxin.(2014).FITC functionalized magnetic core-shell Fe3O4/Ag hybrid nanoparticle for selective determination of molecular biothiols.SENSORS AND ACTUATORS B-CHEMICAL,193,857-863.
MLA	Chen, Ling,et al."FITC functionalized magnetic core-shell Fe3O4/Ag hybrid nanoparticle for selective determination of molecular biothiols".SENSORS AND ACTUATORS B-CHEMICAL 193(2014):857-863.