Rapid and enzyme-free signal amplification for fluorescent detection of microRNA via localized catalytic hairpin assembly on gold nanoparticles

Talanta ◽  
2021 ◽  
pp. 123142
Author(s):  
Qiang Liu ◽  
Mei Liu ◽  
Yan Jin ◽  
Baoxin Li
Keyword(s):  
Gold Nanoparticles ◽  
Signal Amplification ◽  
Fluorescent Detection ◽  
Catalytic Hairpin Assembly

Toehold-Mediated Enzyme-free Cascade Signal Amplification for Ratiometric Fluorescent Detection of Kanamycin

2021 ◽  
pp. 129939
Author(s):  
Tai Ye ◽  
Jiaqi Lu ◽  
Min Yuan ◽  
Hui Cao ◽  
Fengqin Yin ◽  
...  
Keyword(s):  
Signal Amplification ◽  
Fluorescent Detection

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 of Enzyme Activity through Catalytic Signal Amplification with Functionalized Gold Nanoparticles

2011 ◽  
Vol 123 (10) ◽  
pp. 2355-2360 ◽  
Author(s):  
Renato Bonomi ◽  
Alessandro Cazzolaro ◽  
Anna Sansone ◽  
Paolo Scrimin ◽  
Leonard J. Prins
Keyword(s):  
Gold Nanoparticles ◽  
Enzyme Activity ◽  
Signal Amplification ◽  
Functionalized Gold Nanoparticles

A novel electrochemical immunosensor based on dual signal amplification of gold nanoparticles and telomerase extension reaction

2014 ◽  
Vol 6 (7) ◽  
pp. 2221-2226 ◽  
Author(s):  
Xiao-Yan Li ◽  
Zi Yi ◽  
Hao Tang ◽  
Xia Chu ◽  
Ru-Qin Yu
Keyword(s):  
Gold Nanoparticles ◽  
Signal Amplification ◽  
Electrochemical Immunosensor ◽  
Highly Sensitive ◽  
Dual Signal Amplification

Highly sensitive electrochemical immune analysis was achieved based on dual signal amplification of AuNPs and telomerase extension reaction.

A label-free and enzyme-free signal amplification strategy for a sensitive RNase H activity assay

Nanoscale ◽  
2017 ◽  
Vol 9 (42) ◽  
pp. 16149-16153 ◽  
Author(s):  
Chang Yeol Lee ◽  
Hyowon Jang ◽  
Ki Soo Park ◽  
Hyun Gyu Park
Keyword(s):  
Signal Amplification ◽  
Rnase H ◽  
Label Free ◽  
Activity Assay ◽  
G Quadruplex ◽  
Catalytic Hairpin Assembly ◽  
Amplification Strategy

A target-triggered catalytic hairpin assembly with a G-quadruplex specific fluorescent binder, NMM, is employed to develop a novel and sensitive RNase H activity assay.

Sensitive detection of multiple mycotoxins by SPRi with gold nanoparticles as signal amplification tags

2014 ◽  
Vol 431 ◽  
pp. 71-76 ◽  
Author(s):  
Weihua Hu ◽  
Hongming Chen ◽  
Huanhuan Zhang ◽  
Guangli He ◽  
Xin Li ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Signal Amplification ◽  
Sensitive Detection
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