Sensitive and label-free T4 polynucleotide kinase/phosphatase detection based on poly(thymine)-templated copper nanoparticles coupled with nicking enzyme-assisted signal amplification

2016 ◽  
Vol 8 (13) ◽  
pp. 2831-2836 ◽  
Author(s):  
Jia Ge ◽  
Lin Zhang ◽  
Zhen-Zhen Dong ◽  
Qi-Yong Cai ◽  
Zhao-Hui Li
Keyword(s):  
Copper Nanoparticles ◽  
Signal Amplification ◽  
Label Free ◽  
Free T4 ◽  
Highly Sensitive ◽  
Polynucleotide Kinase ◽  
Nicking Enzyme ◽  
T4 Polynucleotide Kinase

A novel label-free biosensor for highly sensitive sensing of the activity as well as inhibition of T4 PNKP based on poly T-templated fluorescent CuNPs and nicking enzyme-assisted signal amplification.

Label-free fluorescence assay coupled exonuclease reaction and SYBR Green I for the detection of T4 polynucleotide kinase activity

2020 ◽  
Vol 12 (6) ◽  
pp. 807-812
Author(s):  
Xu Wu ◽  
Shuyi He ◽  
Julia Xiaojun Zhao
Keyword(s):  
Kinase Activity ◽  
Sybr Green ◽  
Fluorescence Assay ◽  
Sybr Green I ◽  
Label Free ◽  
Cleavage Reaction ◽  
Polynucleotide Kinase ◽  
T4 Polynucleotide Kinase

A sensitive label-free fluorescence assay for monitoring T4 polynucleotide kinase (T4 PNK) activity and inhibition was developed based on a coupled λ exonuclease cleavage reaction and SYBR Green I.

Label-free biosensor based on dsDNA-templated copper nanoparticles for highly sensitive and selective detection of NAD+

RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 91077-91082 ◽  
Author(s):  
Jia Ge ◽  
Zhen-Zhen Dong ◽  
Lin Zhang ◽  
Qi-Yong Cai ◽  
Dong-Mei Bai ◽  
...  
Keyword(s):  
Copper Nanoparticles ◽  
Selective Detection ◽  
Label Free ◽  
Ligation Reaction ◽  
Dna Ligation ◽  
Highly Sensitive

A novel label-free biosensor for high sensing of NAD+ based on dsDNA-templated CuNPs and DNA ligation reaction.

A highly sensitive fluorescence biosensor for detection of Staphylococcus aureus based on HCR-mediated three-way DNA junction nicking enzyme assisted signal amplification

The Analyst ◽  
2021 ◽  
Author(s):  
Chuyan Zhang ◽  
Zewei Luo ◽  
Mengfan Wu ◽  
Wei Ning ◽  
Ziyi Tian ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Food Safety ◽  
Signal Amplification ◽  
Sensitive Detection ◽  
Safety Control ◽  
Food Borne ◽  
Highly Sensitive ◽  
Fluorescence Biosensor ◽  
Highly Sensitive Detection ◽  
Nicking Enzyme

Sensitive and efficient monitoring of food-borne bacteria is of great importance for food safety control. Herein, a novel biosensor for highly sensitive detection of Staphylococcus aureus (S. aureus) was constructed...

scholarly journals Optimization of the Electrodeposition of Gold Nanoparticles for the Application of Highly Sensitive, Label-Free Biosensor

Biosensors ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 50 ◽  
Author(s):  
Hao-Chun Chiang ◽  
Yanyan Wang ◽  
Qi Zhang ◽  
Kalle Levon
Keyword(s):  
Gold Nanoparticles ◽  
Signal Amplification ◽  
Electrochemical Biosensor ◽  
Aqueous Electrolyte ◽  
Label Free ◽  
Reduction Step ◽  
Glucose Biosensors ◽  
Highly Sensitive ◽  
Amperometric Glucose Biosensors ◽  
Aunp Surface

A highly sensitive electrochemical biosensor with a signal amplification platform of electrodeposited gold nanoparticle (AuNP) has been developed and characterized. The sizes of the synthesized AuNP were found to be critical for the performance of biosensor in which the sizes were dependent on HAuCl4 and acid concentrations; as well as on scan cycles and scan rates in the gold electro-reduction step. Systematic investigations of the adsorption of proteins with different sizes from aqueous electrolyte solution onto the electrodeposited AuNP surface were performed with a potentiometric method and calibrated by design of experiment (DOE). The resulting amperometric glucose biosensors was demonstrated to have a low detection limit (> 50 μM) and a wide linear range after optimization with AuNP electrodeposition.

Exonuclease III-assisted signal amplification strategy for sensitive fluorescence detection of polynucleotide kinase based on poly(thymine)-templated copper nanoparticles

The Analyst ◽  
2019 ◽  
Vol 144 (22) ◽  
pp. 6689-6697 ◽  
Author(s):  
Han Zhao ◽  
Ying Yan ◽  
Mingjian Chen ◽  
Tingting Hu ◽  
Kefeng Wu ◽  
...  
Keyword(s):  
Fluorescence Detection ◽  
Copper Nanoparticles ◽  
Signal Amplification ◽  
Exonuclease Iii ◽  
Fluorescent Method ◽  
Polynucleotide Kinase ◽  
Amplification Strategy

A facile fluorescent method has been developed for polynucleotide kinase detection based on copper nanoparticles and exonuclease III-assisted signal amplification.

Sign in / Sign up

Export Citation Format

Share Document