Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/109360
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dc.contributor.author | Liu, G. | - |
dc.contributor.author | Zhang, K. | - |
dc.contributor.author | Nadort, A. | - |
dc.contributor.author | Hutchinson, M. | - |
dc.contributor.author | Goldys, E. | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | ACS Sensors, 2017; 2(2):218-226 | - |
dc.identifier.issn | 2379-3694 | - |
dc.identifier.issn | 2379-3694 | - |
dc.identifier.uri | http://hdl.handle.net/2440/109360 | - |
dc.description.abstract | We demonstrated a cytokine detection device based on gold nanoparticle modified silica optical fiber for the monitoring of locally variable cytokine interleukin-6 (IL-6) concentrations using a sandwich immunoassay scheme. The fiber is designed to be introduced into an intrathecal catheter with micrometer-sized holes drilled along its length to enable fluid exchange between the outside and inside of the catheter. An exposed optical fiber (diameter 125 μm) modified with a layer of gold nanoparticles was functionalized with the IL-6 capture antibody to form the sensing interface. The immunocapture device was incubated with a cytokine solution to capture the analyte. The device was then exposed to the IL-6 detection antibody which was loaded on the fluorescently labeled magnetic nanoparticles, making it possible to quantify the cytokine concentration based on the intensity of fluorescence. A reliable method for quantifying the fluorescent signal on a 3D structure was developed. This device was applied to the detection of cytokine IL-6 with the low limit of detection of 1 pg mL⁻¹ in a sample volume of 1 μL. The device has the linear detection range of 1–400 pg mL⁻¹ and spatial resolution on the order of 200–450 μm, and it is capable of detecting localized IL-6 secreted by live BV2 cells following their liposaccharide stimulation. This biological detection system is suitable for monitoring multiple health conditions. | - |
dc.description.statementofresponsibility | Guozhen Liu, Kaixin Zhang, Annemarie Nadort, Mark R. Hutchinson, and Ewa M. Goldys | - |
dc.language.iso | en | - |
dc.publisher | American Chemical Society Publications | - |
dc.rights | © 2016 American Chemical Society. This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. | - |
dc.source.uri | http://dx.doi.org/10.1021/acssensors.6b00619 | - |
dc.subject | IL-6 | - |
dc.subject | cytokine test strip | - |
dc.subject | cytokines | - |
dc.subject | immunosensors | - |
dc.subject | localized and spatially resolved detection | - |
dc.subject | optical fiber | - |
dc.title | Sensitive cytokine assay based on optical fiber allowing localized and spatially resolved detection of interleukin-6 | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1021/acssensors.6b00619 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/CE140100003 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Hutchinson, M. [0000-0003-2154-5950] | - |
Appears in Collections: | Aurora harvest 8 Pharmacology publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_109360.pdf | Published Version | 3.41 MB | Adobe PDF | View/Open |
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