J 2021

Effect of Particle Size and Surface Chemistry of Photon-Upconversion Nanoparticles on Analog and Digital Immunoassays for Cardiac Troponin

BRANDMEIER, Julian, Kirsti RAIKO, Zdeněk FARKA, Riikka PELTOMAA, Matthias Jürgen MICKERT et. al.

Basic information

Original name

Effect of Particle Size and Surface Chemistry of Photon-Upconversion Nanoparticles on Analog and Digital Immunoassays for Cardiac Troponin

Authors

BRANDMEIER, Julian (276 Germany), Kirsti RAIKO (246 Finland), Zdeněk FARKA (203 Czech Republic, guarantor, belonging to the institution), Riikka PELTOMAA (246 Finland), Matthias Jürgen MICKERT (276 Germany), Antonín HLAVÁČEK (203 Czech Republic), Petr SKLÁDAL (203 Czech Republic, belonging to the institution), Tero SOUKKA and Hans-Heiner GORRIS (276 Germany)

Edition

Advanced Healthcare Materials, Wiley-VCH, 2021, 2192-2640

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: 11.092

RIV identification code

RIV/00216224:14310/21:00119240

Organization unit

Faculty of Science

UT WoS

000673454600001

Keywords in English

anti-Stokes emission; cardiac arrest; lanthadine-dopoed nanomaterials; single-molecule immunoassay; troponin; photon-upconversion; upconversion-linked immunosorbent assay

Tags

International impact, Reviewed
Změněno: 14/10/2024 12:27, Ing. Monika Szurmanová, Ph.D.

Abstract

V originále

Sensitive immunoassays are required for troponin, a low-abundance cardiac biomarker in blood. In contrast to conventional (analog) assays that measure the integrated signal of thousands of molecules, digital assays are based on counting individual biomarker molecules. Photon-upconversion nanoparticles (UCNP) are an excellent nanomaterial for labeling and detecting single biomarker molecules because their unique anti-Stokes emission avoids optical interference, and single nanoparticles can be reliably distinguished from the background signal. Here, the effect of the surface architecture and size of UCNP labels on the performance of upconversion-linked immunosorbent assays (ULISA) is critically assessed. The size, brightness, and surface architecture of UCNP labels are more important for measuring low troponin concentrations in human plasma than changing from an analog to a digital detection mode. Both detection modes result approximately in the same assay sensitivity, reaching a limit of detection (LOD) of 10 pg mL−1 in plasma, which is in the range of troponin concentrations found in the blood of healthy individuals.

Links

GA21-03156S, research and development project
Name: Foton-upkonverzní značky pro mikrofluidní jednomolekulové imunostanovení proteinových biomarkerů
Investor: Czech Science Foundation
LQ1601, research and development project
Name: CEITEC 2020 (Acronym: CEITEC2020)
Investor: Ministry of Education, Youth and Sports of the CR
LTAB19011, research and development project
Name: Luminiscenční imunostanovení jako citlivý nástroj pro diagnostiku nemocí včel
Investor: Ministry of Education, Youth and Sports of the CR, Sensitive bioanalytical tools for the surveillance of honey bee diseases, INTER-ACTION
90127, large research infrastructures
Name: CIISB II