Portable microfluidic plasmonic chip for fast real-time cardiac troponin I biomarker thermoplasmonic detection
Literature Information
Publication Date
2023-11-17
DOI
10.1039/D3TB02190D
Impact Factor
6.331
Authors
Andreea Campu, Ilinca Muresan, Monica Potara, Florin-Leontin Lazar
View Original
Abstract
Acute myocardial infarction is one of the most serious cardiovascular pathologies, impacting patients' long-term outcomes and health systems worldwide. Significant effort is directed toward the development of biosensing technologies, which are able to efficiently and accurately detect an early rise of cardiac troponin levels, the gold standard in detecting myocardial injury. In this context, this work aims to develop a microfluidic plasmonic chip for the fast and accurate real-time detection of the cardiac troponin I biomarker (cTnI) via three complementary detection techniques using portable equipment. Furthermore, the study focuses on providing a better understanding of the thermoplasmonic biosensing mechanism taking advantage of the intrinsic photothermal properties of gold nanoparticles. Specifically, a plasmonic nanoplatform based on immobilized gold nanobipyramids was fabricated, exhibiting optical and thermoplasmonic properties that promote, based on a sandwich-like immunoassay, the “proof-of-concept” multimodal detection of cTnI via localized surface plasmon resonance, surface enhanced Raman spectroscopy and thermoplasmonic effects under simulated conditions. Furthermore, after the integration of the plasmonic nanoplatform in a microfluidic channel, the determination of cTnI in 16 real plasma samples was successfully realized via thermoplasmonic detection. The results are compared with a conventional high-sensitivity enzyme-linked immunosorbent clinical assay (ELISA), showing high sensitivity (75%) and specificity (100%) as well as fast response features (5 minutes). Thus, the proposed portable and miniaturized microfluidic plasmonic chip is successfully validated for clinical applications and transferred to clinical settings for the early diagnosis of cardiac diseases, leading towards the progress of personalized medicine.
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Journal of Materials Chemistry B
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Recommended Compounds
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2,2'-{2,2-Propanediylbis[(2,6-dibromo-4,1-phenylene)oxy]}diethanol
CAS Number:
4162-45-2
Molecular Formula:
C19H20Br4O4
2-Methyl-2-propanyl 4-iodo-1-piperidinecarboxylate
CAS Number:
301673-14-3
Molecular Formula:
C10H18INO2
Oxalic acid compound with cyclohexylsulfamothioic O-acid (11)
CAS Number:
31895-22-4
Molecular Formula:
C7H13NO4S3
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