Induction of heterologous immunity against current influenza serotypes by HA2 sub unit DNA vaccine
| Autor: | Sina Soleimani, Shahla Shahsavandi, Omid Madadgar |
|---|---|
| Jazyk: | perština |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Tehran University Medical Journal, Vol 74, Iss 8, Pp 545-553 (2016) |
| Druh dokumentu: | article |
| ISSN: | 1683-1764 1735-7322 |
| Popis: | Background: Problems of live and inactivated influenza vaccines such as, increasing emerge and re-emerge viruses with high human mortality, current epidemics of influenza and direct transmission of avian viruses to human, affect the vaccination program. DNA vaccines as third generation of vaccines is specially considered for control of influenza in human and poultry. The main advantage of these vaccines is humoral and cellular immune responses and broad spectrum of using these vaccines for control of circulating strains of influenza. In this study the conserved fragment of HA2 to form of DNA vaccine was designed to induce immunity against influenza viruses and its heterologous protective immunity against these viruses was evaluated. Methods: The experimental study was performed in Razi Vaccine and Serum Research Institute from December 2014 to July 2015 in Iran. The HA2 was cloned into pcDNA3.1 to assess the HA2 DNA vaccine and mice were immunized with the generated constructs in a DNA prime-DNA boost regimen in 4 groups. The humoral immune responses were analyzed at defined intervals by VN tests. The safety of the vaccine was evaluated by daily inspection and histopathological examination. For evaluation of cellular immunity, proliferation assay was used. Results: The antibody titre and cellular immunity of immunized mice was significantly higher than control group for two serotypes and the highest responses was in the group with two-time boosting (P |
| Databáze: | Directory of Open Access Journals |
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