Details der Publikation - Signal amplification by strand displacement in a carbon dot based fluorometric assay for ATP

Signal amplification by strand displacement in a carbon dot based fluorometric assay for ATP

Abstract A fluorometric ATP assay is described that makes use of carbon dots and graphene oxide along with toehold-mediated strand displacement reaction. In the absence of target, the fluorescence of carbon dots (with excitation/emission maxima at 360/447 nm) is strong and in the “on” state, because the signal probe hybridizes with the aptamer strand and cannot combine with graphene oxide. In the presence of ATP, it will bind to the aptamer and induce a strand displacement reaction. Consequently, the signal probe is released, the sensing strategy will change into the “off” state with the addition of graphene oxide. This aptasensor exhibits selective and sensitive response to ATP and has a 3.3 nM detection limit. Graphical abstractSchematic of signal amplification by strand displacement in a carbon dot based fluorometric assay for ATP. This strategy exhibits high sensitivity and selectivity with a detection limit as low as 3.3 nM..

Medienart:	E-Artikel

Erscheinungsjahr:	2018
Erschienen:	2018

Enthalten in:	Zur Gesamtaufnahme - volume:185
Enthalten in:	Microchimica acta - 185(2018), 8 vom: 28. Juli

Sprache:	Englisch

Beteiligte Personen:	Luo, Jieping [VerfasserIn] Shen, Xin [VerfasserIn] Li, Bingzhi [VerfasserIn] Li, Xiaoyun [VerfasserIn] Zhou, Xuemin [VerfasserIn]

Links:	Volltext [lizenzpflichtig]

BKL:	35.00$jChemie: Allgemeines
Themen:	Aptamer Carbon dots Fluorescence Graphene oxide Signal amplification

Anmerkungen:	© Springer-Verlag GmbH Austria, part of Springer Nature 2018

doi:	10.1007/s00604-018-2931-2

funding:
Förderinstitution / Projekttitel:

PPN (Katalog-ID):	OLC2107675597

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520			\|a Abstract A fluorometric ATP assay is described that makes use of carbon dots and graphene oxide along with toehold-mediated strand displacement reaction. In the absence of target, the fluorescence of carbon dots (with excitation/emission maxima at 360/447 nm) is strong and in the “on” state, because the signal probe hybridizes with the aptamer strand and cannot combine with graphene oxide. In the presence of ATP, it will bind to the aptamer and induce a strand displacement reaction. Consequently, the signal probe is released, the sensing strategy will change into the “off” state with the addition of graphene oxide. This aptasensor exhibits selective and sensitive response to ATP and has a 3.3 nM detection limit. Graphical abstractSchematic of signal amplification by strand displacement in a carbon dot based fluorometric assay for ATP. This strategy exhibits high sensitivity and selectivity with a detection limit as low as 3.3 nM.
650		4	\|a Fluorescence
650		4	\|a Carbon dots
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650		4	\|a Signal amplification
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Signal amplification by strand displacement in a carbon dot based fluorometric assay for ATP

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