Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Bi-Yun Fang"'
Publikováno v:
Analytica chimica acta. 1175
Disease-associated nucleic acids, such as DNAs and miRNAs, are important biomarkers for the diagnosis, prognosis and treatment guidance of human diseases. Therefore, the accurate and sensitive detection of nucleic acid is of great significance for th
Publikováno v:
Sensors and Actuators B: Chemical. 261:307-315
PS2M aptamer was selected as sensing element to construct Pb2+ strip biosensor, and for the first time, AuNP-DNA polymer was used as sensitivity enhancement probe (SEP) to improve sensitivity. Pb2+ separated the double-strand formed by PS2M and its c
Publikováno v:
Biosensors and Bioelectronics. 100:41-48
Graphene quantum dot (GQD) has been attractive in analytical science field due to its low toxicity, stable photoluminescence. Herein, nitrogen-doped GQD (N-GQD) was prepared by a facile solvothermal treatment of GO using dimethylformamide, and exhibi
Publikováno v:
Colloids and Surfaces B: Biointerfaces. 162:415-419
In this paper, visual detection of trace lead ion was established by aptamer and silver staining. The basic strategy was that aminated PS2.M aptamer was immobilized onto slide and formed stable G-quadruplex structure. PbS was generated by adding S2
Publikováno v:
Sensors and Actuators B: Chemical. 244:928-933
In this paper, we proposed an amplified assay using DNase I for sensitively sensing prostate specific antigen (PSA) based on CdSe/ZnS quantum dot labelled PSA aptamer/graphene oxide (QD-aptamer/GO). In this sensing system, GO could strongly bind QD c
Publikováno v:
Sensors and Actuators B: Chemical. 228:643-648
This study has developed a new membrane based visualization method for the detection of ultratrace lead and cadmium ions. The basic steps were mainly as follows. Dithizone (Dz) was adsorbed on cellulose acetate membrane (CAM) and formed Dz-Pb 2+ /Cd
Publikováno v:
Colloids and Surfaces B: Biointerfaces. 140:233-238
A method for ATP quantification based on dye-labeled aptamer/graphene oxide (aptamer/GO) using capillary electrophoresis-laser induced fluorescence (CE-LIF) detecting technique has been established. In this method, the carboxyfluorescein (FAM)-labell
Autor:
Mei Yang, Mingzhen Zhang, Yana Ma, Bi-Yun Fang, Ping Guo, Wenhui Gao, Changlong Xu, Xiangji Yan, Zhenzhen Jia, Cui Liu, Sohail Ahmad
Publikováno v:
Talanta. 218:121122
DNA-scaffolded silver nanoclusters (DNA/AgNC) probes are widely used to detect microRNAs (miRNAs) for diagnosing diseases. However, current available DNA/AgNC probes, which primarily based on fluorescence quenching (turn-off) method, suffer from low
Publikováno v:
Colloids and surfaces. B, Biointerfaces. 175
In this work, a label-free Ag nanocluster (AgNC)-based fluorescent probe is proposed to detect tumor marker, prostate-specific antigen (PSA). In the experiments, DNA sequences containing segments complemented to different parts of PSA aptamer were us
Publikováno v:
Nanoscale. 10(12)
In this paper, DNA containing six cytosines as the formation site for silver nanoclusters (Ag NCs) was adopted as a template for preparing fluorescent DNA-Ag NCs. For the first time, it was found that the fluorescence of DNA-Ag NCs could be quenched