Electrochemical DNA detection of hepatitis E virus genotype 3 using PbS quantum dot labelling

Ngo DB 1 , Chaibun T 2 , Yin LS 3 , Lertanantawong B 4 , Surareungchai W 5

Affiliations 

  • 1 School of Bioresources and Technology, King Mongkut's University of Technology Thonburi (KMUTT), Bangkhuntien-Chaitalay Road, Bangkok, 10150, Thailand
  • 2 Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Phutthamonthon, Nakhon Pathom, 73170, Thailand
  • 3 Department of Biotechnology, Faculty of Applied Sciences, AIMST University, Jalan, Bukit Air Nasi, 08100, Bedong, Kedah, Malaysia
  • 4 Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Phutthamonthon, Nakhon Pathom, 73170, Thailand. benchaporn.ler@mahidol.ac.th
  • 5 School of Bioresources and Technology, King Mongkut's University of Technology Thonburi (KMUTT), Bangkhuntien-Chaitalay Road, Bangkok, 10150, Thailand. werasak.sur@kmutt.ac.th
Anal Bioanal Chem, 2021 Feb;413(4):1027-1037.
PMID: 33236225 DOI: 10.1007/s00216-020-03061-1

Abstract

The aim of this study was to develop a highly specific electrochemical DNA sensor using functionalized lead sulphide (PbS) quantum dots for hepatitis E virus genotype 3 (HEV3) DNA target detection. Functionalized-PbS quantum dots (QDs) were used as an electrochemical label for the detection of HEV3-DNA target by the technique of square wave anodic stripping voltammetry (SWASV). The functionalized-PbS quantum dots were characterized by UV-vis, FTIR, XRD, TEM and zeta potential techniques. As-prepared, functionalized-PbS quantum dots have an average size of 4.15 ± 1.35 nm. The detection platform exhibited LOD and LOQ values of 1.23 fM and 2.11 fM, respectively. HEV3-DNA target spiked serum is also reported.Graphical abstract.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

MeSH terms
Similar publications