Publication:
Multiplex label-free biosensor for detection of autoantibodies in human serum: Tool for new kinetics-based diagnostics of autoimmune diseases

Дата
2020
Авторы
Orlov, A. V.
Pushkarev, A. V.
Znoyko, S. L.
Bragina, V. A.
Novichikhin, D. O.
Nikitin, P. I.
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Научные группы
Организационные подразделения
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Организационная единица
Инженерно-физический институт биомедицины
Цель ИФИБ и стратегия развития – это подготовка высококвалифицированных кадров на базе передовых исследований и разработок новых перспективных методов и материалов в области инженерно-физической биомедицины. Занятие лидерских позиций в биомедицинских технологиях XXI века и внедрение их в образовательный процесс, что отвечает решению практикоориентированной задачи мирового уровня – диагностике и терапии на клеточном уровне социально-значимых заболеваний человека.
Выпуск журнала
Аннотация
© 2020 Elsevier B.V.A multiplex label-free biosensor is developed for diagnostics of autoimmune diseases by highly sensitive measuring in human serum both critical characteristics of autoantibody: concentration and native kinetic parameters that reflect autoantibody aggressiveness to the organism's tissues. The biosensor is based on the spectral-correlation interferometry and image processing of a microarray glass biochip, affordable to be single-used in medical applications. Simultaneous 25-min detection and activity characterization of several autoantibodies in the same serum sample have been demonstrated for anti-thyroglobulin (anti-TG) and anti-thyroid peroxidase (anti-TPO) as models. The biosensor offers extremely high sensitivity: limits of detection in serum are 1.7 IU/mL and 6 IU/mL for anti-TPO and anti-TG, respectively. The dynamic range covers the whole range of clinically relevant concentrations of the autoantibodies up to 1000 IU/mL. The developed method of characterization of autoantibody activity by recording the kinetics of their binding with free native antigens is based on autoantibody polyvalency. The measurements in clinical serum samples have shown that the native kinetic parameters are independent of concentration. The proposed biosensor and method of native kinetic registration can be used to develop new criteria for comprehensive diagnostics of autoimmune diseases, based not only on traditional measurements of concentration but also on quantitative evaluation of autoantibody aggressiveness. The developed method can be adapted to other label-free sensors such as those based on the surface plasmon resonance, optical waveguides, etc.
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Multiplex label-free biosensor for detection of autoantibodies in human serum: Tool for new kinetics-based diagnostics of autoimmune diseases / Orlov, A.V. [et al.] // Biosensors and Bioelectronics. - 2020. - 159. - 10.1016/j.bios.2020.112187
URI
https://www.doi.org/10.1016/j.bios.2020.112187
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85082961214&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000531078700008
 https://openrepository.mephi.ru/handle/123456789/20609
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