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Asgary V, Shoari A, Afshar Moayad M, Shafiee Ardestani M, Bigdeli R, Ghazizadeh L, Khosravy MS, Panahnejad E, Janani A, Bashar R, Abedi M, Ahangari Cohan R. Evaluation of G2 Citric Acid-Based Dendrimer as an Adjuvant in Veterinary Rabies Vaccine. Viral Immunol 2017; 31:47-54. [PMID: 29328884 DOI: 10.1089/vim.2017.0024] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
For induction of an appropriate immune response, especially in the case of an inactivated vaccine, the use of an adjuvant is crucial. In this study, adjuvanticity effect of G2 dendrimer in veterinary rabies vaccine has been investigated. A nonlinear globular G2 dendrimer comprising citric acid and polyethylene glycol 600 (PEG-600) was synthesized and the toxicity was studied in vitro on the J774A.1 cell line. The adjuvanticity effect of the dendrimer was then investigated on rabies virus in NMRI mice as a model. Different concentrations of dendrimer were used to determine the best formulation for the survival of the mice after virus challenge. The rise of neutralizing antibody was also checked by rapid fluorescent focus inhibition test (RFFIT). The relative potency of the prepared formulation was finally calculated using standard NIH test and the results were compared (and discussed) with the commercially available rabies vaccine. The accuracy of dendrimer synthesis was confirmed using Fourier transform infrared (FT-IR), size, and zeta potential analysis. The in vitro toxicity assay revealed that no significant toxic effect is observed in cells when data are compared with the control group. The in vivo assay showed that a higher survival rate in the mice received a special formulation due to adjuvanticity effect of dendrimer, which is also confirmed by RFFIT. However, the relative potency of that formulation does not give expected results when compared with the alum-containing rabies vaccine. In the current investigation, the adjuvanticity effect of G2 dendrimer was demonstrated for the first time in rising of neutralizing antibodies against rabies virus. Our data confirm that nanoparticles can enhance immune responses in an appropriate manner. Moreover, engineered nanoparticles will enable us to develop novel potent multivalent adjuvants in vaccine technology.
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Affiliation(s)
- Vahid Asgary
- 1 Department of Rabies, Virology Research Group, Pasteur Institute of Iran , Tehran, Iran .,2 Department of Immunology, School of Medicine, Tehran University of Medical Sciences , Tehran, Iran
| | - Alireza Shoari
- 1 Department of Rabies, Virology Research Group, Pasteur Institute of Iran , Tehran, Iran
| | - Majid Afshar Moayad
- 1 Department of Rabies, Virology Research Group, Pasteur Institute of Iran , Tehran, Iran
| | - Mehdi Shafiee Ardestani
- 3 Department of Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences , Tehran, Iran
| | - Razieh Bigdeli
- 4 Research and Development Laboratory, Javid Biotechnology Institute , Tehran, Iran
| | - Leila Ghazizadeh
- 5 National Cell Bank of Iran, Pasteur Institute of Iran , Tehran, Iran
| | | | - Erfan Panahnejad
- 4 Research and Development Laboratory, Javid Biotechnology Institute , Tehran, Iran
| | - Alireza Janani
- 1 Department of Rabies, Virology Research Group, Pasteur Institute of Iran , Tehran, Iran
| | - Rouzbeh Bashar
- 1 Department of Rabies, Virology Research Group, Pasteur Institute of Iran , Tehran, Iran
| | - Maliheh Abedi
- 1 Department of Rabies, Virology Research Group, Pasteur Institute of Iran , Tehran, Iran
| | - Reza Ahangari Cohan
- 6 Department of Pilot Nanobiotechnology, New Technology Research Group, Pasteur Institute of Iran , Tehran, Iran
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