ArticleMikrochimica acta2019
Determination of Alzheimer biomarker DNA by using an electrode modified with in-situ precipitated molybdophosphate catalyzed by alkaline phosphatase-encapsulated DNA hydrogel and target recycling amplification.
Article in Mikrochimica acta, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 19 citations in OpenAlex.
- Nanobiosensors for Non-Amyloidbeta-Tau Biomarkers as Advanced Reporters of Alzheimer's Disease.Diagnostics (Basel, Switzerland) · 2020Review
- Dually enhanced homogenous synthesis of molybdophosphate by hybridization chain reaction and enzyme nanotags for the electrochemical bioassay of carcinoembryonic antigen.Mikrochimica acta · 2020Article
- A homogeneous electrochemical DNA sensor on the basis of a self-assembled thiol layer on a gold support and by using tetraferrocene for signal amplification.Mikrochimica acta · 2020Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
An electrochemical biosensor is described for highly sensitive determination of tDNA, an Alzheimer's disease (AD)-related biomarker. Electroactive molybdophosphate anions were precipitated in-situ on a glassy carbon electrode (GCE) via catalytic hydrolysis by alkaline phosphatase (ALP). This is followed by recycling amplification of tDNA. Four DNA strands (referred to as S1, S2, S3 and S4) were designed to assemble X-shape DNA (X-DNA) building blocks. These were further extended into four directions under the action of DNA polymerase. The resultant two X-DNA motifs were polymerize. Simultaneously, ALP is encapsulated into a hydrogels network to obtain a porous material of type ALP@DNAhg. The GCE was modified with reduced graphene oxide functionalized with gold nanoparticles (Au@rGO). If ALP@DNAhg are captured via strand displacement, tDNA recycling assembly for signal amplification is initiated. This results in the immobilization of large amounts of ALP. On introduction of pyrophosphate and molybdate (MoO
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