The enzyme-amplified amperometric DNA sensor using an electrodeposited polymer redox mediator

Lanyong Zhang, Ying Wan, Jiong Zhang, Di Li, Lihua Wang, Shiping Song, Chunhai Fan

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

A highly sensitive method for the detection of a breast cancer-associated BRCA-1 gene is reported. The detection is based on a classical sandwich-type assay using horseradish peroxidase (HRP) as a catalytic label and electrodeposited Os2+/3+ conducting polymer (PAA-PVI-Os) as a redox mediator. Target DNA could be detected by the HRP-catalyzed reduction of H 2O2, leading to a limit of detection as low as 10 fM.

Original languageEnglish
Pages (from-to)746-750
Number of pages5
JournalScience in China, Series B: Chemistry
Volume52
Issue number6
DOIs
StatePublished - Jun 2009
Externally publishedYes

Keywords

  • Conducting polymer
  • DNA detection
  • Electrochemistry
  • HRP

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