[Virus-like particles--a new strategy for production of vaccines against influenza virus].

Numerous studies demonstrated that simultaneous expression of some viral proteins in the cell with the aid of a process of self-assembly might lead to the formation of the virus-like particles (VLP) even in the absence of the viral genome. The morphological and antigenic similarity between VLP and native virions represents a promising approach to the new type of vaccines. In the last decade, the threat of the influenza strains with pandemic potential becomes more important.

Recombinant influenza vaccines.

This review covers the problems encountered in the construction and production of new recombinant influenza vaccines. New approaches to the development of influenza vaccines are investigated; they include reverse genetics methods, production of virus-like particles, and DNA- and viral vector-based vaccines. Such approaches as the delivery of foreign genes by DNA- and viral vector-based vaccines can preserve the native structure of antigens.

Plant-produced recombinant influenza vaccine based on virus-like HBc particles carrying an extracellular domain of M2 protein.

Conventional influenza vaccines are based on a virus obtained in chicken embryos or its components. The high variability of the surface proteins of influenza virus, hemagglutinin and neuraminidase, requires strain-specific vaccines matching the antigenic specificity of newly emerging virus strains to be developed. A recombinant vaccine based on a highly conservative influenza virus protein M2 fused to a nanosized carrier particle can be an attractive alternative to traditional vaccines.

Development of Recombinant Vaccine against A(H1N1) 2009 Influenza Based on Virus-like Nanoparticles Carrying the Extracellular Domain of M2 Protein.

The conventional vaccines currently being used to deal with influenza are based on a virus obtained in chicken embryos or its components. The high variability of the major immunogenic surface proteins - hemagglutinin and neuraminidase-require the development of strain-specific vaccines that match the antigenic specificity of a newly emerging virus. Recombinant vaccines based on single viral proteins that could be easily produced in standard expression systems are attractive alternatives to traditional influenza vaccines.

[Cowpea mosaic virus chimeric particles bearing ectodomain of matrix protein 2 (M2E) of influenza A virus: production and characteristics].

The epitope presentation system for ectodomain of M2-protein of influenza A virus (M2e) based on Cowpea Mosaic Virus (CPMV) was constructed for expression in plants Vigna unguiculata. CPMV is widely used as a vector for production of immunogenic chimeric virus particles (CVPs) bearing epitopes of different infectious human and animal pathogens. To produce chimeric CPMV virus particles in plants, two binary vectors were constructed bearing modified gene coding for S-coat protein of CPMV with insertions of M2e epitopes of human influenza and bird influenza viruses.