A sensitive photoelectrochemical methyltransferase activity assay based on a novel "Z-scheme" CdSe QD/afGQD heterojunction and multiple signal amplification strategies

被引:14
作者
Meng, Leixia [1 ,2 ]
Xiao, Ke [1 ,2 ]
Li, Yanmei [1 ,2 ]
Zhang, Xiaohua [1 ,2 ]
Du, Cuicui [1 ,2 ]
Chen, Jinhua [1 ,2 ]
机构
[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Peoples R China
[2] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
关键词
QUANTUM DOTS; LABEL-FREE; NANOPARTICLES; METHYLATION; IMMUNOASSAY; OXIDE;
D O I
10.1039/c9cc04414k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Here, based on a newly developed "Z-scheme" CdSe QD/afGQD heterojunction and multiple signal amplification strategies, a sensitive photoelectrochemical methyltransferase activity assay was carried out and a low detection limit of 0.046 U mL(-1) was obtained.
引用
收藏
页码:8166 / 8169
页数:4
相关论文
共 40 条
[1]   Photosynthetic energy conversion: natural and artificial [J].
Barber, James .
CHEMICAL SOCIETY REVIEWS, 2009, 38 (01) :185-196
[2]   Increased cytosine DNA-methyltransferase activity is target-cell-specific and an early event in lung cancer [J].
Belinsky, SA ;
Nikula, KJ ;
Baylin, SB ;
Issa, JPJ .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1996, 93 (09) :4045-4050
[3]   Quantitative detection of RASSF1A DNA promoter methylation in tumors and serum of patients with serous epithelial ovarian cancer [J].
BonDurant, Amy E. ;
Huang, Zhiqing ;
Whitaker, Regina S. ;
Simel, Lauren R. ;
Berchuck, Andrew ;
Murphy, Susan K. .
GYNECOLOGIC ONCOLOGY, 2011, 123 (03) :581-587
[4]   Concatenated Catalytic Hairpin Assembly/Hyperbranched Hybridization Chain Reaction Based Enzyme-Free Signal Amplification for the Sensitive Photoelectrochemical Detection of Human Telomerase RNA [J].
Chu, Yanxin ;
Deng, An-Ping ;
Wang, Wenjing ;
Zhu, Jun-Jie .
ANALYTICAL CHEMISTRY, 2019, 91 (05) :3619-3627
[5]   Highly sensitive visible light activated photoelectrochemical biosensing of organophosphate pesticide using biofunctional crossed bismuth oxyiodide flake arrays [J].
Gong, Jingming ;
Wang, Xiaoqing ;
Li, Xue ;
Wang, Kewei .
BIOSENSORS & BIOELECTRONICS, 2012, 38 (01) :43-49
[6]   A Sunlight Powered Portable Photoelectrochemical Biosensor Based on a Potentiometric Resolve Ratiometric Principle [J].
Hao, Nan ;
Hua, Rong ;
Zhang, Kai ;
Lu, Jinwen ;
Wang, Kun .
ANALYTICAL CHEMISTRY, 2018, 90 (22) :13207-13211
[7]   Fluorescence Imaging of Intracellular Telomerase Activity Using Enzyme-Free Signal Amplification [J].
Hong, Min ;
Xu, Lidan ;
Xue, Qingwang ;
Li, Lu ;
Tang, Bo .
ANALYTICAL CHEMISTRY, 2016, 88 (24) :12177-12182
[8]   Truly Immobilization-Free Diffusivity-Mediated Photoelectrochemical Biosensing Strategy for Facile and Highly Sensitive MicroRNA Assay [J].
Hou, Ting ;
Xu, Ningning ;
Wang, Wenxiao ;
Ge, Lei ;
Li, Feng .
ANALYTICAL CHEMISTRY, 2018, 90 (15) :9591-9597
[9]   "On-Off-On" Photoelectrochemical/Visual Lab-on-Paper Sensing via Signal Amplification of CdS Quantum Dots@Leaf-Shape ZnO and Quenching of Au-Modified Prism-Anchored Octahedral CeO2 Nanoparticles [J].
Kong, Qingkun ;
Cui, Kang ;
Zhang, Lina ;
Wang, Yanhu ;
Sun, Jianli ;
Ge, Shenguang ;
Zhang, Yan ;
Yu, Jinghua .
ANALYTICAL CHEMISTRY, 2018, 90 (19) :11297-11304
[10]   Z-Scheme Photocatalytic Systems for Promoting Photocatalytic Performance: Recent Progress and Future Challenges [J].
Li, Haijin ;
Tu, Wenguang ;
Zhou, Yong ;
Zou, Zhigang .
ADVANCED SCIENCE, 2016, 3 (11)