J 2017

Rapid single-step upconversion-linked immunosorbent assay for diclofenac

HLAVÁČEK, Antonín, Miroslav PETEREK, Zdeněk FARKA, Matthias J. MICKERT, Leonhard PRECHTL et. al.

Basic information

Original name

Rapid single-step upconversion-linked immunosorbent assay for diclofenac

Authors

HLAVÁČEK, Antonín (203 Czech Republic, belonging to the institution), Miroslav PETEREK (203 Czech Republic, belonging to the institution), Zdeněk FARKA (203 Czech Republic, belonging to the institution), Matthias J. MICKERT (276 Germany), Leonhard PRECHTL (276 Germany), Dietmar KNOPP (276 Germany) and Hans H. GORRIS (276 Germany, guarantor)

Edition

Microchimica Acta, Vienna, Springer, 2017, 0026-3672

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

Austria

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 5.705

RIV identification code

RIV/00216224:14740/17:00097559

Organization unit

Central European Institute of Technology

UT WoS

000410517400062

Keywords in English

Bioconjugation; Electrophoretic purification; Immunoassay; Luminescence; Pharmaceutical micropollutant; Photon-upconversion

Tags

Tags

International impact, Reviewed
Změněno: 15/3/2018 11:03, Mgr. Pavla Foltynová, Ph.D.

Abstract

V originále

The non-steroidal anti-inflammatory drug and analgesic diclofenac is a common micropollutant in water. A direct competitive upconversion-linked immunosorbent assay (ULISA) for diclofenac has been developed that is based on a nanoparticulate tracer consisting of a NaYF4:Yb,Er core (diameter of ~90 nm, excitation and emission wavelenghts 980 and 535 nm, respectively) enclosed by a carboxylated silica shell and finally coated with diclofenac-conjugated bovine gamma-globulin. The proteinaceous coating prevents non-specific adsorption of the tracer to the microtiter plate and provides a structurally flexible linker for surface-exposed diclofenac to warrant efficient competition with free (analyte) diclofenac in real water samples. The tracer was purified by gel electrophoresis and lyophilized. Both processes have no adverse effects on the immunoassay. All assay components can be stored in a dry state without a cooling chain, and can be reactivated on demand. Hence, this ULISA is well suited for environmental monitoring in low-resource settings. The ULISA has a similar limit of detection (20 pg mL-1; equivalent to 70 pM) as the conventional ELISA, but the time for analysis is reduced to 70 min because no enzymatic amplification steps are involved.

Links

LD15023, research and development project
Name: Příprava diskrétních biokonjugátů photon-upconversion nanočástic
Investor: Ministry of Education, Youth and Sports of the CR
LM2015043, research and development project
Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)
Investor: Ministry of Education, Youth and Sports of the CR