核酸
化学
DNA
纳米材料
DNA纳米技术
纳米技术
生物传感器
脱氧核酶
检出限
纳米颗粒
组合化学
滚动圆复制
生物化学
聚合酶
材料科学
色谱法
作者
Hongfei He,Jianyuan Dai,Yan Meng,Zhiguang Duan,Cuisong Zhou,Baozhan Zheng,Juan Du,Yong Guo,Dingquan Xiao
出处
期刊:Talanta
[Elsevier]
日期:2018-03-01
卷期号:179: 641-645
被引量:28
标识
DOI:10.1016/j.talanta.2017.11.065
摘要
It is known that DNA molecules can be used to build a various of complicated geometrical DNA nanostructures with programmable sequence design, and these DNA nanomaterials show a promising application in biotechnology and biomedicine. However, the construction of large-sized three dimensional DNA-based nanomaterials still remains a challenge. In this work, we propose a new strategy that only employs one target DNA to trigger multiple catalyzed hairpin assembly (CHA) reactions and sticky ends self-assembly to prepare hundreds of nanometer-sized DNA nanoparticles. Moreover, the obtained DNA nanoparticles can be served as efficient biosensors for sensitive colorimetric nucleic acids detection with a detection limit of 7.7 pM
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