Immunosensor based on long-period fiber gratings for detection of viruses causing gastroenteritis
Marta Janczuk-Richter , Beata Gromadzka , Łukasz Richter , Mirosława Panasiuk , Karolina Zimmer , Predrag Mikulic , Wojtek J. Bock , Sebastian Maćkowski , Mateusz Śmietana , Joanna Niedziółka Jönsson
AbstractSince the norovirus is the main cause of acute gastroenteritis all over the world, its fast detection is crucial in medical diagnostics. In this work, a rapid, sensitive, and selective optical fiber biosensor for the detection of norovirus virus-like particles (VLPs) is reported. The sensor is based on highly sensitive long-period fiber gratings (LPFGs) coated with antibodies against the main coat protein of the norovirus. Several modification methods were verified to obtain reliable immobilization of protein receptors on the LPFG surface. We were able to detect 1 ng/mL norovirus VLPs in a 40-min assay in a label-free manner. Thanks to the application of an optical fiber as the sensor, there is a possibility to increase the user’s safety by separating the measurement point from the signal processing setup. Moreover, our sensor is small and light, and the proposed assay is straightforward. The designed LPFG-based biosensor could be applied in both fast norovirus detection and in vaccine testing.
|Journal series||Sensors, [SENSORS-BASEL], ISSN 1424-8220, e-ISSN 1424-3210, (N/A 100 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||virus detection; norovirus, virus-like particle, label-free biosensor, optical fiber sensor, long-period fiber gratings|
|ASJC Classification||; ; ;|
|License||Journal (articles only); published final; ; with publication|
|Score||= 100.0, 09-03-2020, ArticleFromJournal|
|Publication indicators||: 2016 = 1.393; : 2018 = 3.031 (2) - 2018=3.302 (5)|
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