Development of inactivated cultural yellow fever vaccine

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Abstract

Introduction. The only currently available live vaccine against yellow fever (YF) based on chicken embryos infected with an attenuated 17D strain of the YF virus is one of the most effective vaccine preparations. However, the live vaccine is associated with “viscerotropic syndrome” (approximately 0.4 cases per 100 000 vaccinated). Therefore, the development and introduction of highly purified inactivated vaccine against YF is intended to ensure the maximum safety of vaccination against one of the most common human viral diseases.

Goals and objectives. Development and evaluation of immunogenicity of the cultural inactivated vaccine against YF at the laboratory model level.

Material and methods. Adaptation of 17D strain of YF virus to Vero cell culture, cultivation, removal of cellular DNA, inactivation with β-propiolactone, concentration, chromatographic purification, determination of protein and antigen of YF virus, assessment of immunogenicity in mice in parallel with commercial live vaccine.

Results and discussion. Immunogenicity: the determination of specific antibodies of class G (IgG) and virus neutralizing antibodies in the sera of immunized mice showed high level of antibodies exceeding that of immunized with commercial live vaccine. The optimal dose of antigen in the vaccine (total protein) was 50 μg/ml (5 μg/0.1 ml -dose and volume per 1 vaccination of mice). Thus, the laboratory version of cultural inactivated vaccine against YF is as effective (and even superior) as the commercial live vaccine.

Conclusion. Laboratory version of cultural inactivated vaccine against YF, which is not inferior in immunogenicity (in animal model) to commercial live vaccine, has been developed.

About the authors

A. P. Ivanov

Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products, Russian Academy of Sciences

Author for correspondence.
Email: ivanovalexander1@gmail.com
ORCID iD: 0000-0003-4576-7136

Alexander P. Ivanov – D. Sci. (Med.), leading researcher, laboratory of molecular biology of viruses.

Moscow, 108819

Russian Federation

T. D. Klebleeva

Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products, Russian Academy of Sciences

Email: fake@neicon.ru
ORCID iD: 0000-0003-4288-6818

Tatiana D. Klebleeva – junior researcher, laboratory of molecular biology of viruses.

Moscow, 108819

Russian Federation

Y. V. Rogova

Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products, Russian Academy of Sciences

Email: fake@neicon.ru
ORCID iD: 0000-0002-4655-5330

Yulia V. Rogova - head of the department of experimental aAnimals.

Moscow, 108819 Russian Federation

O. E. Ivanova

Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products, Russian Academy of Sciences; I.M. Sechenov First Moscow State Medical University (Sechenov University)

Email: fake@neicon.ru
ORCID iD: 0000-0003-1784-4827

Ol'gaE. Ivanova - D. Sci. (Med.), leading researcher, laboratory of virology of poliomyelitis and other enterovirus infections with the WHO Polio Surveillance Center, Chumakov FSCRD of Immune-and-Biological Products of RAS; prof. of the Department of Organization and Technology of Immunobiological Preparations of the Institute of Translational Medicine and Biotechnology, Federal State Autonomous Educational Institution of Higher Education, I.M. Sechenov FMSMU.

Moscow, 11999, 108819 Russian Federation

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Copyright (c) 2020 Ivanov A.P., Klebleeva T.D., Rogova Y.V., Ivanova O.E.

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