PNA Microprobe for Label-Free Detection of Nucleic Acid Repeat Mutations

20 July 2021, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

We present a PNA-based microprobe sensing platform to detect nucleic acid repeat mutations by electrochemical impedance spectroscopy. The microprobe platform discriminated Huntington’s disease-associated CAG repeats in cell-derived total RNA. This sensitive, label-free, and PCR-free detection strategy has the potential to detect a plethora of length mutation disorders.

Keywords

PNA
CAG repeat
Neurodegenerative Diseases
Huntington's Disease
Electrochemical Impedance Spectroscopy
Electrochemical Detection
Electrochemical Biosensing
Label-Free
PCR-Free
Biosensing

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