Method for determining infectious and hemagglutinating titer of influenza A/Mallard Pennsylvania/10218/84 (H5N2) virus by changing the microviscosity of the viral membrane after interaction with phospholipid modifiers using cholesterol free liposomes as an example
- Authors: Kontarov N.A.1,2, Pogarskaya I.V.2, Dolgova E.I.2, Kontarova E.O.3, Pomazanov V.V.4, Gafarov R.R.4, Mardanly S.G.4, Yuminova N.V.2
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Affiliations:
- I.M. Sechenov First Moscow State Medical University (Sechenov University)
- Mechnikov Research Institute for Vaccines and Sera
- Federal Scientific and Clinical Center of Federal Medical Biology Centre
- State University of Humanities and Technology
- Issue: Vol 70, No 5 (2025)
- Pages: 471-476
- Section: TO VIROLOGIST’S AID
- URL: https://journals.rcsi.science/0507-4088/article/view/353630
- DOI: https://doi.org/10.36233/0507-4088-326
- EDN: https://elibrary.ru/atftvd
- ID: 353630
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Abstract
Introduction. The antiviral action of a number of drugs is associated with their modification of the lipid membrane of viruses. One of the possible mechanisms of such modification of the viral membrane is the extraction of cholesterol from the membranes of virions.
Objective of the study. A method has been developed for determining the infectious and hemagglutinating titer of avian influenza virus by changing the microviscosity of the viral membrane after incubation with phospholipid modifiers, using cholesterol-free liposomes consisting of phosphatidylcholine and phosphatidylethanolamine in a molar ratio of 1 : 2 for 48 hours as an example.
Materials and methods. The extraction process was confirmed by two methods: gel filtration with radioactively labeled liposomes and virions, and by changing the polarization value of the fluorescent probe 1-anilinonaphthalene-8-sulfonate anion (8-ANS) in the viral membrane.
Results. A correlation was found between the change in infectious and hemagglutinating titer and the microviscosity of the viral membrane.
Conclusion. In this regard, it seems possible to use this dependence to determine the infectious and hemagglutinating activity of the influenza virus within one serotype in clinical laboratory diagnostics, using various fluorescent probes. It should be noted that not only liposomes of a certain composition can be used as lipophilic modifiers of the viral membrane, but also such compounds as ethylene glycol, erythritol, glycerol.
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##article.viewOnOriginalSite##About the authors
Nikolay A. Kontarov
I.M. Sechenov First Moscow State Medical University (Sechenov University); Mechnikov Research Institute for Vaccines and Sera
Author for correspondence.
Email: kontarov@mail.ru
ORCID iD: 0000-0003-0030-4867
PhD (Biology), leading researcher at the laboratory of children’s viral infections
Russian Federation, Moscow, 119991; Moscow, 115088Irina V. Pogarskaya
Mechnikov Research Institute for Vaccines and Sera
Email: kozyr81@mail.ru
ORCID iD: 0000-0003-3580-6277
PhD (Biology), leading researcher Department of Virology named after O.G. Andzhaparidze
Russian Federation, Moscow, 115088Ekaterina I. Dolgova
Mechnikov Research Institute for Vaccines and Sera
Email: dolgovaev@mail.ru
ORCID iD: 0000-0001-8985-7569
junior researcher Department of Virology named after O.G. Andzhaparidze
Russian Federation, Moscow, 115088Elena O. Kontarova
Federal Scientific and Clinical Center of Federal Medical Biology Centre
Email: kontarova@mail.ru
ORCID iD: 0000-0002-5550-7875
PhD (Medicine), radiologist
Russian Federation, Moscow, 115682Vladimir V. Pomazanov
State University of Humanities and Technology
Email: ecolab@mail.ru
ORCID iD: 0000-0002-7336-9912
Dr Sci (Engineering), professor
Russian Federation, Orekhovo-Zuevo, 142611Ramis R. Gafarov
State University of Humanities and Technology
Email: gafarov68@mail.ru
ORCID iD: 0009-0009-2869-7421
PhD (Biology)
Russian Federation, Orekhovo-Zuevo, 142611Sefaddin G. Mardanly
State University of Humanities and Technology
Email: ecolab@mail.ru
ORCID iD: 0000-0003-3650-2363
Dr Sci (Medicine)
Russian Federation, Orekhovo-Zuevo, 142611Nadezhda V. Yuminova
Mechnikov Research Institute for Vaccines and Sera
Email: yuminova@mail.ru
ORCID iD: 0000-0002-7723-4038
Dr Sci (Biology), chief researcher
Russian Federation, Moscow, 115088References
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