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Tytuł:
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Label-free optical antibody testing kit based on a self-assembled whispering-gallery-mode microsphere.
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Autorzy:
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Yue Y; School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Ding H; School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Chen C; School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
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Źródło:
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Journal of biophotonics [J Biophotonics] 2021 Mar; Vol. 14 (3), pp. e202000338. Date of Electronic Publication: 2020 Nov 23.
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Typ publikacji:
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Journal Article; Research Support, Non-U.S. Gov't
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Język:
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English
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Imprint Name(s):
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Original Publication: Weinheim : Wiley-VCH
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MeSH Terms:
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COVID-19 Serological Testing*
Microspheres*
Antibodies, Viral/*immunology
COVID-19/*diagnosis
Silicon Dioxide/*chemistry
Antigens/immunology ; Biosensing Techniques ; COVID-19/immunology ; Coronavirus Nucleocapsid Proteins/immunology ; Epidemics ; Humans ; Immunoglobulin G/immunology ; Immunoglobulin M/immunology ; Optics and Photonics ; Phosphoproteins/immunology ; Polymethyl Methacrylate/chemistry ; SARS-CoV-2 ; Silanes
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References:
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Grant Information:
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51777150 National Natural Science Foundation of China
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Contributed Indexing:
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Keywords: WGM sensor; antibody detection; biosensor; self assembly
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Substance Nomenclature:
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0 (Antibodies, Viral)
0 (Antigens)
0 (Coronavirus Nucleocapsid Proteins)
0 (Immunoglobulin G)
0 (Immunoglobulin M)
0 (Phosphoproteins)
0 (Silanes)
0 (nucleocapsid phosphoprotein, SARS-CoV-2)
7631-86-9 (Silicon Dioxide)
9011-14-7 (Polymethyl Methacrylate)
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Entry Date(s):
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Date Created: 20201105 Date Completed: 20210315 Latest Revision: 20210315
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Update Code:
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20240105
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DOI:
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10.1002/jbio.202000338
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PMID:
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33151629
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The appearance of antibodies in blood is a critical signal to suggest the infection. A rapid and accurate detection method for the antibody is significant to the disease diagnosis, especially for the epidemic. To this end, a highly sensitive whispering-gallery-mode (WGM) optical testing kit is designed and fabricated for detecting the specific immunoglobulin antibodies. The key component of the kit is a silica self-assembled microsphere decorated with the nucleocapsid proteins (N-proteins) of the SARS-CoV-2 virus. After the N-protein antibody immunoglobulin G (N-IgG) and immunoglobulin M (N-IgM) solutions being injected into the kit, the WGM red-shifts due to the antigen-antibody reaction. The wavelength displacement rates are proportional to the concentrations of these two antibodies from 1 to 100 μg/mL. A good specificity of the kit is demonstrated by the nonspecific human immunoglobulin G (H-IgG) and immunoglobulin M (H-IgM).
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