NDLI: Albumin coated CuInS2 quantum dots as a near-infrared fluorescent probe for NADH, and their application to an assay for pyruvate

Content Provider	Springer Nature Link
Author	Liu, Siyu Shi, Fanping Chen, Lu Su, Xingguang
Copyright Year	2013
Abstract	Water-soluble CuInS2 quantum dots (QDs) stabilized with 3-mercaptopropionic acid were synthesized in aqueous solution and then coated with bovine serum albumin. The resulting particles display fluorescence with a peak at 680 nm that is effectively quenched by 1, 4-dihydro-nicotinamide adenine dinucleotide (NADH), but not by 1, 4-nicotinamide adenine dinucleotide (NAD+). The enzyme lactate dehydrogenase catalyzes the reduction of pyruvate and dehydrogenation of lactic acid using NAD+ or NADH as a cosubstrate. The new QDs were applied to monitor the course of lactate dehydrogenase-catalyzed reaction of pyruvate by detecting NADH via its quenching effect. This resulted in a convenient and selective detection scheme for pyruvate. The detection limit is as low as 25 nM. Figure Bovine serum albumin coated CuInS2 quantum dots (QDs) are quenched by 1,4- dihydronicotinamide adenine dinucleotide (NADH) that could react with pyruvic acid and lactate dehydrogenase. Therefore, the CuInS2 QDs could be used to detect pyruvic acid.
Starting Page	339
Ending Page	345
Page Count	7
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	181
Issue Number	3-4
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2013-11-14
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	CuInS2 quantum dots Near-infrared Bovine serum albumin Lactate dehydrogenase Pyruvic acid Nanochemistry Nanotechnology Characterization and Evaluation of Materials Analytical Chemistry Microengineering
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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