J 2018

Prussian Blue Nanoparticles as a Catalytic Label in a Sandwich Nanozyme-Linked Immunosorbent Assay

FARKA, Zdeněk, Veronika ČUNDERLOVÁ, Veronika HORÁČKOVÁ, Matěj PASTUCHA, Zuzana MIKUŠOVÁ et. al.

Basic information

Original name

Prussian Blue Nanoparticles as a Catalytic Label in a Sandwich Nanozyme-Linked Immunosorbent Assay

Authors

FARKA, Zdeněk (203 Czech Republic, belonging to the institution), Veronika ČUNDERLOVÁ (203 Czech Republic, belonging to the institution), Veronika HORÁČKOVÁ (203 Czech Republic, belonging to the institution), Matěj PASTUCHA (203 Czech Republic, belonging to the institution), Zuzana MIKUŠOVÁ (703 Slovakia, belonging to the institution), Antonín HLAVÁČEK (203 Czech Republic, belonging to the institution) and Petr SKLÁDAL (203 Czech Republic, guarantor, belonging to the institution)

Edition

Analytical Chemistry, Washington, DC, American Chemical Society, 2018, 0003-2700

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 6.350

RIV identification code

RIV/00216224:14740/18:00100815

Organization unit

Central European Institute of Technology

UT WoS

000424730600119

Keywords in English

Prussian blue nanoparticle; Enzyme biomimic; Bioconjugation; Sandwich immunoassay; Salmonella; Human serum albumin

Tags

International impact, Reviewed
Změněno: 19/3/2019 09:07, Mgr. Pavla Foltynová, Ph.D.

Abstract

V originále

Enzyme immunoassays are widely used for detection of analytes within various samples. However, enzymes as labels suffer several disadvantages such as high production cost and limited stability. Catalytic nanoparticles (nanozymes) can be used as an alternative label in immunoassays overcoming the inherent disadvantages of enzymes. Prussian blue nanoparticles (PBNPs) are nanozymes composed of the Fe4[Fe(CN)6]3-based coordination polymer. They reveal peroxidase-like activity and are capable of catalyzing the oxidation of colorless 3,3',5,5'-tetramethylbenzidine in the presence of H2O2 to form intensely blue product. Here, we introduce the method for conjugation of PBNPs with antibodies and their application in nanozyme-linked immunosorbent assay (NLISA). Sandwich NLISA for detection of human serum albumin in urine was developed with limit of detection (LOD) of 1.2 ng·mL–1 and working range up to 1 ug·mL-1. Furthermore, the microbial contamination of Salmonella Typhimurium in powdered milk was detected with LOD of 6 × 10^3 colony-forming units (cfu)·mL-1 and working range up to 10^6 cfu·mL-1. In both cases, a critical comparison with the same immunoassay but using native peroxidase as label was realized. The achieved results confirmed the suitability of PBNPs for universal and robust replacement of enzyme labels.

Links

GBP206/12/G014, research and development project
Name: Centrum pokročilých bioanalytických technologií
LM2015043, research and development project
Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)
Investor: Ministry of Education, Youth and Sports of the CR
LQ1601, research and development project
Name: CEITEC 2020 (Acronym: CEITEC2020)
Investor: Ministry of Education, Youth and Sports of the CR