Single cell analysis of neutrophils NETs by microscopic LSPR imaging system

Mohamed Ali, Riyaz Ahmad and Mita, Daiki and Espulgar, Wilfred and Saito, Masato and Nishide, Masayuki and Takamatsu, Hyota and Yoshikawa, Hiroyuki and Tamiya, Eiichi (2020) Single cell analysis of neutrophils NETs by microscopic LSPR imaging system. Micromachines, 11 (1). pp. 1-15. ISSN 2072-666X

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A simple microengraving cell monitoring method for neutrophil extracellular traps (NETs) released from single neutrophils has been realized using a polydimethylsiloxane (PDMS) microwell array (MWA) sheet on a plasmon chip platform. An imbalance between NETs formation and the succeeding degradation (NETosis) are considered associated with autoimmune disease and its pathogenesis. Thus, an alternative platform that can conduct monitoring of this activity on single cell level at minimum cost but with great sensitivity is greatly desired. The developed MWA plasmon chips allow single cell isolation of neutrophils from 150 μL suspension (6.0 × 105 cells/mL) with an efficiency of 36.3%; 105 microwells with single cell condition. To demonstrate the utility of the chip, trapped cells were incubated between 2 to 4 h after introducing with 100 nM phorbol 12- myristate 13-acetate (PMA) before measurement. Under observation using a hyperspectral imaging system that allows high-throughput screening, the neutrophils stimulated by PMA solution show a significant release of fibrils and NETs after 4 h, with observed maximum areas between 314–758 μm2. An average absorption peak wavelength shows a redshift of Δλ = 1.5 nm as neutrophils release NETs.

Item Type: Article
Uncontrolled Keywords: neutrophil; localized surface plasmon resonance (LSPR); microwell
Subjects: Q Science > QD Chemistry
T Technology > T Technology (General)
Divisions: Faculty of Electrical and Electronic Engineering > Department of Electronic Enngineering
Depositing User: Miss Afiqah Faiqah Mohd Hafiz
Date Deposited: 14 Dec 2021 08:39
Last Modified: 14 Dec 2021 08:39

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