Recombinant domains III of Tick-Borne Encephalitis Virus envelope protein in combination with dextran and CpGs induce immune response and partial protectiveness against TBE virus infection in mice

Ershova, A.S.; Gra, O.A.; Lyaschuk, A.M.; Grunina, T.M.; Tkachuk, A.P.; Bartov, M.S.; Savina, D.M.; Sergienko, O.V.; Galushkina, Z.M.; Gudov, V.P.; Kozlovskaya, L.I.; Kholodilov, I.S.; Gmyl, L.V.; Karganova, G.G.; Lunin, V.G.; Karyagina, A.S.; Gintsburg, A.L.

Авторы: Ershova Anna S., Gra Olga A., Lyaschuk Alexander M., Grunina Tatyana M., Tkachuk Artem P., Bartov Mikhail S., Savina Darya M., Sergienko Olga V., Galushkina Zoya M., Gudov Vladimir P., Kozlovskaya Liubov I., Kholodilov Ivan S., Gmyl Larissa V., Karganova Galina G., Lunin Vladimir G., Karyagina Anna S., Gintsburg Alexander L.
Журнал: BMC Infectious Diseases
Том: 16
Год издания: 2016
Издательство: BioMed Central
Местоположение издательства: London
Первая страница: 544
DOI: 10.1186/s12879-016-1884-5
Аннотация: Background E protein of tick-borne encephalitis virus (TBEV) and other flaviviruses is located on the surface of the viral particle. Domain III of this protein seems to be a promising component of subunit vaccines for prophylaxis of TBE and kits for diagnostics of TBEV. Methods Three variants of recombinant TBEV E protein domain III of European, Siberian and Far Eastern subtypes fused with dextran-binding domain of Leuconostoc citreum KM20 were expressed in E. coli and purified. The native structure of domain III was confirmed by ELISA antibody kit and sera of patients with tick-borne encephalitis. Immunogenic and protective properties of the preparation comprising these recombinant proteins immobilized on a dextran carrier with CpG oligonucleotides as an adjuvant were investigated on the mice model. Results All 3 variants of recombinant proteins immobilized on dextran demonstrate specific interaction with antibodies from the sera of TBE patients. Thus, constructed recombinant proteins seem to be promising for TBE diagnostics. The formulation comprising the 3 variants of recombinant antigens immobilized on dextran and CpG oligonucleotides, induces the production of neutralizing antibodies against TBEV of different subtypes and demonstrates partial protectivity against TBEV infection. Conclusions Studied proteins interact with the sera of TBE patients, and, in combination with dextran and CPGs, demonstrate immunogenicity and limited protectivity on mice compared with reference “Tick-E-Vac” vaccine.
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Recombinant domains III of Tick-Borne Encephalitis Virus envelope protein in combination with dextran and CpGs induce immune response and partial protectiveness against TBE virus infection in miceстатья

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