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Magnetic nanochains-based dynamic ELISA for rapid and ultrasensitive detection of acute myocardial infarction biomarkers
- Source :
- Analytica Chimica Acta. 1166:338567
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Acute myocardial infarction (AMI) is the leading cause of morbidity and mortality globally. The serum levels of a group of cardiac biomarkers have been regarded as important indicators in the routine diagnosis of AMI. The development of rapid, sensitive, and accurate detection methods of AMI biomarkers is urgently needed for the early diagnosis of AMI. Here, a dynamic and pseudo-homogeneous enzyme-linked immunosorbent assay (ELISA) was reported based on the combined use of bioconjugated magnetic nanochains (MNCs) and gold nanoparticles (AuNPs) probes. The capture antibodies-conjugated MNCs served as dynamic nano-mixers to facilitate liquid mixing and as homogeneously dispersed capturing agents to capture and separate specific targets. The AuNPs probes were prepared by co-immobilization of detection antibodies and horseradish peroxidase (HRP) for signals amplification. The design of bioconjugated MNCs and AuNPs probes significantly increased the assay kinetics and improves the assay sensitivity. This novel ELISA strategy realized accurate detection of a panel of AMI biomarkers within 35 min, leading to considerably improved sensitivities compared to that of conventional ELISA method. Ministry of Education (MOE) Singapore-MIT Alliance for Research and Technology (SMART) This work is supported by the Singapore-MIT Alliance of Research and Technology Center (ING000383-ENG), the Ministry of Education-Singapore (MOE2018-T2-2-128) and National First-class Discipline Program of Food Science and Technology (JUFSTI201801). Di Li is grateful for financial support from University Scholarship Fund for Overseas Exchange of Jiangnan University and the China Scholarship Council (No. 202006790116).
- Subjects :
- Bioengineering [Engineering]
Cardiac biomarkers
Combined use
Myocardial Infarction
Metal Nanoparticles
Enzyme-Linked Immunosorbent Assay
02 engineering and technology
01 natural sciences
Biochemistry
Analytical Chemistry
medicine
Humans
Environmental Chemistry
Chemical Detection
Myocardial infarction
Elisa method
Horseradish Peroxidase
Spectroscopy
Chemistry
Magnetic Phenomena
010401 analytical chemistry
Assay sensitivity
021001 nanoscience & nanotechnology
medicine.disease
0104 chemical sciences
Colloidal gold
Gold
0210 nano-technology
Signal amplification
Biomarkers
Biomedical engineering
Subjects
Details
- ISSN :
- 00032670
- Volume :
- 1166
- Database :
- OpenAIRE
- Journal :
- Analytica Chimica Acta
- Accession number :
- edsair.doi.dedup.....5abc122db50329e1727692eedefad949