Pubblicazione scientifica

Potentiometric Aptasensing of Vibrio alginolyticus Based on DNA Nanostructure-Modified Magnetic Beads

FILONE TECNOLOGICO	TEMA
produzione e raccolta

RIASSUNTO

A potentiometric aptasensing assay that couples the DNA nanostructure-modified magnetic beads with a solid-contact polycation-sensitive membrane electrode for the detection of Vibrio alginolyticus is herein described. The DNA nanostructure-modified magnetic beads are used for amplification of the potential response and elimination of the interfering effect from a complex sample matrix. The solid-contact polycation-sensitive membrane electrode using protamine as an indicator is employed to chronopotentiometrically detect the change in the charge or DNA concentration on the magnetic beads, which is induced by the interaction between Vibrio alginolyticus and the aptamer on the DNA nanostructures. The present potentiometric aptasensing method shows a linear range of 10–100 CFU mL−1 with a detection limit of 10 CFU mL−1, and a good specificity for the detection of Vibrio alginolyticus. This proposed strategy can be used for the detection of other microorganisms by changing the aptamers in the DNA nanostructures.

DATA

Data di pubblicazione: 02/12/2016

AUTORI

ZHAO GUANGTAO
DING JIAWANG
YU HAN
YIN TANJI
QIN WEI

ENTE DI AFFERENZA

KEY LAB OF COASTAL ENVIRONMENTAL PROCESSES & ECOLOGICAL REMEDIATION YANTAI INST COASTAL ZONE RSCH YIC CHINESE ACAD SCIENCES CAS SHANDONG PROVINCIAL KEY LAB OF COASTAL ENVIRONMENTAL PROCESSES YICCAS YANTAI 264003 SHANDONG CHINA GTZHAO YIC AC CN GZ JWDING YIC AC CN JD HYU YIC AC CN HY
UNIV CHINESE ACAD SCIENCES BEIJING 100049 CHINA

RIVISTA

Sensors (Basel, Switzerland), 16(12), 2052

IMPACT FACTOR

3,510

indietro