Trace miRNA assay based on DNA nanostructures formed by hybridization chain reaction and gold nanoparticles tags

2021 ◽  
Author(s):  
Yan Song ◽  
Mingyuan Wang ◽  
Qin Qian ◽  
Jun Xu ◽  
Qungang Zhou ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Hybridization Chain Reaction ◽  
Dna Nanostructures ◽  
Chain Reaction

scholarly journals Spatiotemporally programmable cascade hybridization of hairpin DNA in polymeric nanoframework for precise siRNA delivery

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Feng Li ◽  
Wenting Yu ◽  
Jiaojiao Zhang ◽  
Yuhang Dong ◽  
Xiaohui Ding ◽  
...  
Keyword(s):  
Steric Effect ◽  
Sirna Delivery ◽  
Dna Nanotechnology ◽  
Hybridization Chain Reaction ◽  
Dna Nanostructures ◽  
Chain Reaction ◽  
Dna Hairpins ◽  
In Vivo Experiments ◽  
Dna And Rna

AbstractDNA nanostructures have been demonstrated as promising carriers for gene delivery. In the carrier design, spatiotemporally programmable assembly of DNA under nanoconfinement is important but has proven highly challenging due to the complexity–scalability–error of DNA. Herein, a DNA nanotechnology-based strategy via the cascade hybridization chain reaction (HCR) of DNA hairpins in polymeric nanoframework has been developed to achieve spatiotemporally programmable assembly of DNA under nanoconfinement for precise siRNA delivery. The nanoframework is prepared via precipitation polymerization with Acrydite-DNA as cross-linker. The potential energy stored in the loops of DNA hairpins can overcome the steric effect in the nanoframework, which can help initiate cascade HCR of DNA hairpins and achieve efficient siRNA loading. The designer tethering sequence between DNA and RNA guarantees a triphosadenine triggered siRNA release specifically in cellular cytoplasm. Nanoframework provides stability and ease of functionalization, which helps address the complexity–scalability–error of DNA. It is exemplified that the phenylboronate installation on nanoframework enhanced cellular uptake and smoothed the lysosomal escape. Cellular results show that the siRNA loaded nanoframework down-regulated the levels of relevant mRNA and protein. In vivo experiments show significant therapeutic efficacy of using siPLK1 loaded nanoframework to suppress tumor growth.

A hybridization chain reaction coupled with gold nanoparticles for allergen gene detection in peanut, soybean and sesame DNAs

The Analyst ◽  
2019 ◽  
Vol 144 (12) ◽  
pp. 3886-3891 ◽  
Author(s):  
Dan Yuan ◽  
Xueen Fang ◽  
Yongxin Liu ◽  
Jilie Kong ◽  
Qin Chen
Keyword(s):  
Gold Nanoparticles ◽  
Absorption Spectra ◽  
Ultraviolet Absorption ◽  
Hybridization Chain Reaction ◽  
Gene Detection ◽  
Chain Reaction ◽  
Color Changes

A HCR coupled with gold nanoparticles to detect allergen genes by using ultraviolet absorption spectra or color changes.

Sensitive electrochemical monitoring of nucleic acids coupling DNA nanostructures with hybridization chain reaction

2013 ◽  
Vol 783 ◽  
pp. 17-23 ◽  
Author(s):  
Junyang Zhuang ◽  
Libing Fu ◽  
Mingdi Xu ◽  
Huanghao Yang ◽  
Guonan Chen ◽  
...  
Keyword(s):  
Nucleic Acids ◽  
Hybridization Chain Reaction ◽  
Dna Nanostructures ◽  
Chain Reaction ◽  
Electrochemical Monitoring

A C-HCR assembly of branched DNA nanostructures for amplified uracil-DNA glycosylase assays

2017 ◽  
Vol 53 (96) ◽  
pp. 12878-12881 ◽  
Author(s):  
Jing Wang ◽  
Min Pan ◽  
Jie Wei ◽  
Xiaoqing Liu ◽  
Fuan Wang
Keyword(s):  
Dna Glycosylase ◽  
Hybridization Chain Reaction ◽  
Selective Detection ◽  
Dna Nanostructures ◽  
Chain Reaction ◽  
Uracil Dna Glycosylase ◽  
Branched Dna

The amplified and selective detection of uracil-DNA glycosylase was enabled by a two-layered cascaded hybridization chain reaction machinery.

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