Sensitive Fluorescent Sensor for Recognition of HIV-1 dsDNA by Using Glucose Oxidase and Triplex DNA
Joint Authors
Li, Yubin
Liu, Sheng
Ling, Liansheng
Source
Journal of Analytical Methods in Chemistry
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-01
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
A sensitive fluorescent sensor for sequence-specific recognition of double-stranded DNA (dsDNA) was developed on the surface of silver-coated glass slide (SCGS).
Oligonucleotide-1 (Oligo-1) was designed to assemble on the surface of SCGS and act as capture DNA, and oligonucleotide-2 (Oligo-2) was designed as signal DNA.
Upon addition of target HIV-1 dsDNA (Oligo-3•Oligo-4), signal DNA could bind on the surface of silver-coated glass because of the formation of C•GoC in parallel triplex DNA structure.
Biotin-labeled glucose oxidase (biotin-GOx) could bind to signal DNA through the specific interaction of biotin-streptavidin, thereby GOx was attached to the surface of SCGS, which was dependent on the concentration of target HIV-1 dsDNA.
GOx could catalyze the oxidation of glucose and yield H2O2, and the HPPA can be oxidized into a fluorescent product in the presence of HRP.
Therefore, the concentration of target HIV-1 dsDNA could be estimated with fluorescence intensity.
Under the optimum conditions, the fluorescence intensity was proportional to the concentration of target HIV-1 dsDNA over the range of 10 pM to 1000 pM, the detection limit was 3 pM.
Moreover, the sensor had good sequence selectivity and practicability and might be applied for the diagnosis of HIV disease in the future.
American Psychological Association (APA)
Li, Yubin& Liu, Sheng& Ling, Liansheng. 2018. Sensitive Fluorescent Sensor for Recognition of HIV-1 dsDNA by Using Glucose Oxidase and Triplex DNA. Journal of Analytical Methods in Chemistry،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1176578
Modern Language Association (MLA)
Li, Yubin…[et al.]. Sensitive Fluorescent Sensor for Recognition of HIV-1 dsDNA by Using Glucose Oxidase and Triplex DNA. Journal of Analytical Methods in Chemistry No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1176578
American Medical Association (AMA)
Li, Yubin& Liu, Sheng& Ling, Liansheng. Sensitive Fluorescent Sensor for Recognition of HIV-1 dsDNA by Using Glucose Oxidase and Triplex DNA. Journal of Analytical Methods in Chemistry. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1176578
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1176578