A nucleic acid biosensor for gene expression analysis in nanograms of mRNA.


An ultrasensitive nucleic acid biosensor for direct detection of genes in mRNA extracted from animal tissues is described. It is based on amperometric detection of a target gene by forming an mRNA/redox polymer bilayer on a gold electrode. The mRNA was directly labeled with cisplatin-biotin conjugates through coordinative bonds with purine bases in the mRNA… (More)


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