Cited by 34Advanced Biosensing Techniques and ApplicationsPlasmonic and Surface Plasmon ResearchAdvanced Fiber Optic Sensors

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Site-directed immobilization of antibody using EDC-NHS-activated protein A on a bimetallic-based surface plasmon resonance chip

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Sohn, Young-Soo, Lee, Yeon Kyung·2014·Journal of Biomedical Optics

Abstract

The characteristics of a waveguide-coupled bimetallic surface plasmon resonance (WcBiM SPR) sensor using (3-dimethylaminopropyl)-3-ethylcarbodiimide(EDC)-N-hydroxysuccinimide(NHS)-activated protein A was investigated, and the detection of IgG using the EDC-NHS-activated protein A was studied in comparison with protein A and a self-assembled monolayer (SAM). The WcBiM sensor, which has a narrower full width at half maximum (FWHM) and a steeper slope, was selected since it leads to a larger change in the reflectance in the intensity detection mode. A preparation of the EDC-NHS-activated protein A for site-directed immobilization of antibodies was relative easily compared to the engineered protein G and A. In antigen–antibody interactions, the response to IgG at the concentrations of 50, 100, and 150 ng/ml was investigated. The results showed that the sensitivity of the WcBiM sensor using the EDC-NHS-activated protein A, protein A, and SAM was 0.0185 [%/(ng/ml) ], 0.0065 [%/(ng/ml) ], and 0.0101 [%/(ng/ml) ], respectively. The lowest detectable concentrations of IgG with the EDC-NHS-activated protein A, protein A, and SAM were 4.27, 12.83, and 8.24 ng/ml , respectively. Therefore, the increased sensitivity and lower detection capability of the WcBiM SPR chip with the EDC-NHS-activated protein A suggests that it could be used in early diagnosis where the trace level concentrations of biomolecules should be detected.

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References 23 · Cited by 34

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Metadata

Authors
Sohn, Y.-S., & Lee, Y. K.
Affiliations
Daegu Catholic University (KR)
Venue
Journal of Biomedical Optics
Published
2014-01-13
Volume
19
Issue
05
Pages
1-7
ISSN
  • 1083-3668 (ISSN-L)
  • 1560-2281
OpenAlex
W1967830457
Cited by
34
References
23
Citations by year
2026: 3 · 2025: 7 · 2024: 2 · 2023: 1 · 2022: 2 · 2021: 3 · 2020: 3 · 2019: 2 · 2018: 1 · 2017: 3 · 2016: 3 · 2015: 3 · 2014: 1
FWCI
1.37
Type
journal article
Language
en
Open access
Locations
  • Journal of Biomedical Optics (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Research Foundation of Korea funded by the Ministry of Education (2013R1A1A2010028)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Advanced Biosensing Techniques and Applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Plasmonic and Surface Plasmon Research
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Fiber Optic Sensors
Keywords
surface plasmon resonance, antibody immobilization, protein A, self-assembled monolayers, IgG detection, antigen-antibody reaction, early diagnosis
MeSH terms
Carbodiimides, Equipment Design, Immunoglobulin G, Staphylococcal Protein A, Succinimides, Biosensing Techniques, Surface Plasmon Resonance, Antibodies, Immobilized

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CoChat. (2026). Citation check: Site-directed immobilization of antibody using EDC-NHS-activated protein A on a bimetallic-based surface plasmon resonance chip. https://app.cochat.ai/papers/10.1117/1.jbo.19.5.051209
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Sohn, Y.-S., & Lee, Y. K. (2014). Site-directed immobilization of antibody using EDC-NHS-activated protein A on a bimetallic-based surface plasmon resonance chip. Journal of Biomedical Optics. https://doi.org/10.1117/1.jbo.19.5.051209