Selection and characterization, application of a DNA aptamer targeted to Streptococcus pyogenes in cooked chicken

Copyright © 2018 Elsevier Inc. All rights reserved..

An aptamer against Streptococcus pyogenes was selected and identified, and a fluorescent method based on the reported aptamer was established to detect S. pyogenes in the cooked chicken. Through a twelve rounds of whole-bacterium SELEX (systematic evolution of ligands by exponential enrichment) selection in vitro, a set of aptamers binding to the whole cell of S. pyogenes were generated, harvesting a low-level dissociation constant (Kd) value of 44 ± 5 nmol L-1 of aptamer S-12. Aptamer-based quantification of S. pyogenes in the cooked chicken sample was implemented in a fluorescence resonance energy transfer-based assay by using graphene oxide, resulting in a limit of detection of 70 cfu mL-1. The selected aptamer showed affinity and selectivity recognizing S. pyogenes; besides, more biosensors based on the selected aptamer as a molecular recognition element could be developed in the innovative determinations of S. pyogenes.

Medienart:

E-Artikel

Erscheinungsjahr:

2018

Erschienen:

2018

Enthalten in:

Zur Gesamtaufnahme - volume:551

Enthalten in:

Analytical biochemistry - 551(2018) vom: 15. Juni, Seite 37-42

Sprache:

Englisch

Beteiligte Personen:

Huang, Yukun [VerfasserIn]
Wang, Xin [VerfasserIn]
Duan, Nuo [VerfasserIn]
Xia, Yu [VerfasserIn]
Wang, Zhouping [VerfasserIn]
Che, Zhenming [VerfasserIn]
Wang, Lijun [VerfasserIn]
Yang, Xiao [VerfasserIn]
Chen, Xianggui [VerfasserIn]

Links:

Volltext

Themen:

7782-42-5
Aptamer
Aptamers, Nucleotide
Cooked chicken
DNA, Bacterial
Graphene oxide
Graphite
Journal Article
Research Support, Non-U.S. Gov't
Streptococcus pyogenes
Whole-bacterium SELEX

Anmerkungen:

Date Completed 22.07.2019

Date Revised 22.07.2019

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.ab.2018.04.015

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM283462965