DNA electrochemical biosensor of methylene blue as the hybridization indicator

2007 ◽  
Author(s):  
Jimei Zhang ◽  
Wei Tong ◽  
Zhao Dai ◽  
Shichao Xu ◽  
Ning Guo ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Electrochemical Biosensor ◽  
Dna Electrochemical Biosensor

DNA Electrochemical Biosensor Based on Chitosan and Gold Nanoparticles Using Methylene Blue as Electrochemical Indicator

2011 ◽  
Vol 298 ◽  
pp. 128-134
Author(s):  
Ai Chun Zhang ◽  
Cun Zhou
Keyword(s):  
Methylene Blue ◽  
Gold Nanoparticles ◽  
Electrochemical Biosensor ◽  
Gold Atom ◽  
Modified Electrodes ◽  
Layer By Layer ◽  
Adsorption Effect ◽  
Dna Electrochemical Biosensor ◽  
Modified Dna ◽  
Self Assembled

In this paper, a novel DNA electrochemical biosensor based on layer-by-layer self-assembled technology was reported. Gold nanoparticles were firstly immobilized on chitosan modified gold electrode by large amino of chitosan because of strong electrostatic adsorption effect between amino and gold atom, and thoil group modified DNA (SH-ssDNA) probe sequence was then self-assembled onto the electrode. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were applied to investigate the electrochemical behavior of different modified electrodes with methylene blue as hybrid indicator. The results in optimization experiment condition show that: The peak current difference value pre and post hybridization was linearly related to the logatithmic value of the target DNA concentration ranging from 10-8~10-5mol/L.A detection limit of 3.55×10-9mol/L can be estimated.

DNA electrochemical biosensor for detection of Alicyclobacillus acidoterrestris utilizing Hoechst 33258 as indicator

2021 ◽  
pp. 107801
Author(s):  
José M. R. Flauzino ◽  
Rafaela C. S. Peres ◽  
Lívia M. Alves ◽  
Jussara G. Vieira ◽  
Júlia G. dos Santos ◽  
...  
Keyword(s):  
Electrochemical Biosensor ◽  
Hoechst 33258 ◽  
Alicyclobacillus Acidoterrestris ◽  
Dna Electrochemical Biosensor

A highly sensitive electrochemical microRNA-21 biosensor based on intercalating methylene blue signal amplification and a highly dispersed gold nanoparticles/graphene/polypyrrole composite

The Analyst ◽  
2021 ◽  
Vol 146 (8) ◽  
pp. 2679-2688
Author(s):  
Chammari Pothipor ◽  
Noppadol Aroonyadet ◽  
Suwussa Bamrungsap ◽  
Jaroon Jakmunee ◽  
Kontad Ounnunkad
Keyword(s):  
Methylene Blue ◽  
Gold Nanoparticles ◽  
Signal Amplification ◽  
Electrochemical Biosensor ◽  
Highly Sensitive ◽  
Highly Dispersed ◽  
Polypyrrole Composite ◽  
Amplification Strategy ◽  
Dispersed Gold ◽  
Potential Tool

An ultrasensitive electrochemical biosensor based on a gold nanoparticles/graphene/polypyrrole composite modified electrode and a signal amplification strategy employing methylene blue is developed as a potential tool for the detection of miRNA-21.

Detection EGFR exon 19 status of lung cancer patients by DNA electrochemical biosensor

2016 ◽  
Vol 80 ◽  
pp. 411-417 ◽  
Author(s):  
Xiong-Wei Xu ◽  
Xiu-Hua Weng ◽  
Chang-Lian Wang ◽  
Wei-Wei Lin ◽  
Ai-Lin Liu ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Cancer Patients ◽  
Electrochemical Biosensor ◽  
Dna Electrochemical Biosensor ◽  
Lung Cancer Patients ◽  
Exon 19

Ultrasensitive DNA electrochemical biosensor based on MnTBAP biomimetic catalyzed AGET ATRP signal amplification reaction

2020 ◽  
Vol 56 (49) ◽  
pp. 6636-6639
Author(s):  
Haobo Sun ◽  
Yunliang Qiu ◽  
Yajie Lu ◽  
Jinming Kong ◽  
Xueji Zhang
Keyword(s):  
Dna Sequences ◽  
Signal Amplification ◽  
Electrochemical Biosensor ◽  
Aget Atrp ◽  
Dna Electrochemical Biosensor ◽  
Amplification Reaction

In this paper, an ultrasensitive, highly selective and green electrochemical biosensor for quantifying DNA sequences (aM DNA) based on a MnTBAP catalyst for AGET ATRP reaction is proposed.

In Situ Evaluation of the Anticancer Antibody Rituximab-dsDNA Interaction Using a DNA-Electrochemical Biosensor

2014 ◽  
Vol 26 (6) ◽  
pp. 1304-1311 ◽  
Author(s):  
Inês B. Santarino ◽  
Severino Carlos B. Oliveira ◽  
Ana Maria Oliveira-Brett
Keyword(s):  
Electrochemical Biosensor ◽  
Dna Electrochemical Biosensor

A feasible C-rich DNA electrochemical biosensor based on Fe3O4@3D-GO for sensitive and selective detection of Ag+

2015 ◽  
Vol 652 ◽  
pp. 225-233 ◽  
Author(s):  
Yanqin Yang ◽  
Mengmeng Kang ◽  
Shaoming Fang ◽  
Minghua Wang ◽  
Linghao He ◽  
...  
Keyword(s):  
Electrochemical Biosensor ◽  
Selective Detection ◽  
Dna Electrochemical Biosensor
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