A new colorimetric assay method for the detection of anti-hepatitis C virus antibody with high sensitivity

文献情報

出版日 2019-09-05

DOI 10.1039/C9AN01466G

インパクトファクター 4.616

著者

Wenxin Chai, Liu Shi, Hai Shi, Anzhi Sheng, Jie Yang

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要旨

The early detection of low abundance anti-hepatitis C virus antibody (anti-HCV Ab) is critical for efficient diagnosis and treatment of HCV infection. In this work, a new colorimetric assay method has been proposed for the sensitive detection of anti-HCV Ab. In this method, the antibody-induced DNA strand displacement and the resulting rolling circle amplification (RCA) are integrated to generate a large amount of tandemly repeated G-quadruplex DNAzymes on the arm of the “Y”-shaped antibody. Consequently, oxidation of 3,3′,5,5′-tetramethylbenzidine can be extensively catalyzed by the peroxidase-mimicking DNAzymes. Therefore, the readout signal can be greatly amplified. Further studies reveal that 0.998 pM anti-HCV Ab can be detected by this newly developed assay method. Moreover, the strategy proposed in this method can be adapted for the detection of other antibodies or bivalent targets.

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CiteScore: 7.8

自己引用率: 5.6%

年間論文数: 653

Analyst publishes analytical and bioanalytical research that reports premier fundamental discoveries and inventions, and the applications of those discoveries, unconfined by traditional discipline barriers.

A new colorimetric assay method for the detection of anti-hepatitis C virus antibody with high sensitivity

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