Retracted Article: Graphene oxide/DNA-decorated electrode for the fabrication of microRNA biosensor

Erlin Sun; Lining Wang; Xiaodong Zhou; Chengquan Ma; Yan Sun; Mingde Lei; Bingxin Lu; Ruifa Han

doi:10.1039/C5RA12373A

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Retracted Article: Graphene oxide/DNA-decorated electrode for the fabrication of microRNA biosensor

Erlin Sun,*^a Lining Wang,^a Xiaodong Zhou,^a Chengquan Ma,^a Yan Sun,^a Mingde Lei,^a Bingxin Lu^a and Ruifa Han^a

Author affiliations

* Corresponding authors

^a Tianjin Institute of Urology, Department of Urology, The 2nd Hospital of Tianjin Medical University, Tianjin 300211, P. R. China
E-mail: erlinsuntj@126.com, irene_sunsun@yahoo.com
Fax: +86 022 88326188

Abstract

We fabricate a sensitive biosensor for miRNA quantification using a graphene oxide/DNA-decorated electrode. AgNPs are modified on DNA probe, which is the complementary sequence of target miRNA. Since the hybridization between DNA and miRNA releases DNA, electrochemical signals from AgNPs are declined, which indicates the concentration of miRNA.