Enzyme-based ultrasensitive electrochemical biosensors.

Abstract:

:Signal amplification in conventional enzyme-based biosensors is not high enough to achieve the ultrasensitive detection of biomolecules. In recent years, signal amplification has been improved by combining enzymatic reactions with redox cycling or employing multienzyme labels per detection probe. Electrochemical-chemical redox cycling and electrochemical-chemical-chemical redox cycling allow ultrasensitive detection simply by including one or two more chemicals in a solution without the use of an additional enzyme and/or electrode. Multiple horseradish peroxidase labels on magnetic bead carriers provide high signal enhancement along with a multiplex detection possibility. In both cases, the detection procedures are the same as those in conventional enzyme-based electrochemical sensors.

journal_name

Curr Opin Chem Biol

authors

Yang H

doi

10.1016/j.cbpa.2012.03.015

subject

Has Abstract

pub_date

2012-08-01 00:00:00

pages

422-8

issue

3-4

eissn

1367-5931

issn

1879-0402

pii

S1367-5931(12)00050-6

journal_volume

16

pub_type

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