Highly Selective Detection of Single-Nucleotide Polymorphisms Using a Quartz Crystal Microbalance Biosensor Based on the Toehold-Mediated Strand Displacement Reaction
文献类型：期刊论文
| 作者 | Wang, Dingzhong; Tang, Wei; Wu, Xiaojie; Wang, Xinyi; Chen, Gengjia; Chen, Qiang; Li, Na; Liu, Feng |
| 刊名 | ANALYTICAL CHEMISTRY
 |
| 出版日期 | 2012-08-21 |
| 卷号 | 84期号:16页码:7008-7014 |
| ISSN号 | 0003-2700 |
| DOI | 10.1021/ac301064g |
| 文献子类 | Article |
| 英文摘要 | Toehold-mediated strand displacement reaction (SDR) is first introduced to develop a simple quartz crystal microbalance (QCM) biosensor without an enzyme or label at normal temperature for highly selective and sensitive detection of single-nucleotide polymorphism (SNP) in the p53 tumor suppressor gene. A hairpin capture probe with an external toehold is designed and immobilized on the gold electrode surface of QCM. A successive SDR is initiated by the target sequence hybridization with the toehold domain and ends with the unfolding of the capture probe. Finally, the open-loop capture probe hybridizes with the streptavidin-coupled reporter probe as an efficient mass amplifier to enhance the QCM signal. The proposed biosensor displays remarkable specificity to target the p53 gene fragment against single-base mutant sequences (e.g., the largest discrimination factor is 63 to C-C mismatch) and high sensitivity with the detection limit of 0.3 nM at 20 degrees C. As the crucial component of the fabricated biosensor for providing the high discrimination capability, the design rationale of the capture probe is further verified by fluorescence sensing and atomic force microscopy imaging. Additionally, a recovery of 84.1% is obtained when detecting the target sequence in spiked HeLa cells lysate, demonstrating the feasibility of employing this biosensor in detecting SNPs in biological samples. |
| WOS关键词 | DNA-LIGASE REACTION ; SIGNAL AMPLIFICATION ; MOLECULAR BEACON ; PRIMER EXTENSION ; HYBRIDIZATION ; CLEAVAGE ; STRATEGY ; ENDONUCLEASE ; LIGATION ; TARGETS |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000307695900015 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/167238]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Liu, Feng |
| 作者单位 | Peking Univ, Beijing Natl Lab Mol Sci, Key Lab Bioorgan Chem & Mol Engn, Coll Chem & Mol Engn,Minist Educ, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Dingzhong,Tang, Wei,Wu, Xiaojie,et al. Highly Selective Detection of Single-Nucleotide Polymorphisms Using a Quartz Crystal Microbalance Biosensor Based on the Toehold-Mediated Strand Displacement Reaction[J]. ANALYTICAL CHEMISTRY,2012,84(16):7008-7014. |
| APA | Wang, Dingzhong.,Tang, Wei.,Wu, Xiaojie.,Wang, Xinyi.,Chen, Gengjia.,...&Liu, Feng.(2012).Highly Selective Detection of Single-Nucleotide Polymorphisms Using a Quartz Crystal Microbalance Biosensor Based on the Toehold-Mediated Strand Displacement Reaction.ANALYTICAL CHEMISTRY,84(16),7008-7014. |
| MLA | Wang, Dingzhong,et al."Highly Selective Detection of Single-Nucleotide Polymorphisms Using a Quartz Crystal Microbalance Biosensor Based on the Toehold-Mediated Strand Displacement Reaction".ANALYTICAL CHEMISTRY 84.16(2012):7008-7014. |
入库方式： OAI收割
来源：大连化学物理研究所
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