Lateral flow colorimetric biosensor for detection of Vibrio parahaemolyticus based on hybridization chain reaction and aptamer

• Published in: Mikrochimica acta (1966) Vol. 188; no. 11; p. 381
• Main Authors: Ying, Na, Wang, Yuan, Song, Xuefeng, Yang, Liguo, Qin, Bo, Wu, Yanqing, Fang, Wenhong
• Format: Journal Article
• Language: English
• Published: Vienna Springer Vienna 01-11-2021; Springer; Springer Nature B.V
• Subjects: Analytical Chemistry; Bacteria; Biosensing Techniques - methods; Biosensors; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Colorimetry; Colorimetry - methods; Detectors; Food; Humans; Microengineering; Nanochemistry; Nanoparticles; Nanotechnology; Necrosis; Nucleotides; Original Paper; Polymerase Chain Reaction - methods; Safety and security measures; Seafood; Seafood - adverse effects; Signal processing; Vibrio parahaemolyticus - metabolism; Aptamer; Hybridization chain reaction; Lateral flow nucleotide biosensor; Magnetic nanoparticles; Colorimetric detection; Vibrio parahaemolyticus
• ISSN: 0026-3672; 1436-5073
• DOI: 10.1007/s00604-021-05031-5

Vibrio parahaemolyticus
(
V. parahaemolyticus
) is the causative agent for acute hepatopancreatic necrosis disease (AHPND) of shrimp, and it is also a common seafood-borne pathogen for humans. Rapid and accurate identification of
V. parahaemolyticus
is helpful to diagnose the AHPND and ensure food safety. Common detection methods suffer the deficiency of time-consuming and complexed operation. Based on the increased development of aptamer and our previous study, a new detection assay of
V. parahaemolyticus
was introduced, in which the aptamer combined with magnetic nanoparticles (MNPs) was the recognizer, hybridization chain reaction (HCR) was the signal amplifier, and lateral flow nucleotide biosensor (LFNB) was the signal exporter. The assay possessed high specificity of distinguishing the target with other bacteria, and the calculated limit of detection was 2.6 × 10
3
cells. Furthermore, the whole process just needs 67 min, free of thermocycle instruments and signal readout instruments, which means it is suitable for low-resource laboratories or districts.
Graphical abstract