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Título: | Improving the safety of viral DNA vaccines Development of vectors containing both 5′ and 3′ homologous regulatory sequences from non-viral origin |
Autor: | Martínez-López, Alicia CSIC ORCID; Encinas, Paloma; García-Valtanen, Pablo; Gómez Casado, Eduardo; Coll, J. M.; Estepa, A. | Palabras clave: | Terminators Vector regulatory sequences Fish DNA Vaccines Plasmids VHSV Rhabdovirus |
Fecha de publicación: | 2013 | Editor: | Springer Nature | Citación: | Applied Microbiology and Biotechnology 97: 3007-3016 (2013) | Resumen: | Although some DNA vaccines have proved to be very efficient in field trials, their authorisation still remains limited to a few countries. This is in part due to safety issues because most of them contain viral regulatory sequences to driving the expression of the encoded antigen. This is the case of the only DNA vaccine against a fish rhabdovirus (a negative ssRNA virus), authorised in Canada, despite the important economic losses that these viruses cause to aquaculture all over the world. In an attempt to solve this problem and using as a model a non-authorised, but efficient DNA vaccine against the fish rhabdovirus, viral haemorrhagic septicaemia virus (VHSV), we developed a plasmid construction containing regulatory sequences exclusively from fish origin. The result was an "all-fish vector", named pJAC-G, containing 5′ and 3′ regulatory sequences of β-acting genes from carp and zebrafish, respectively. In vitro and in vivo, pJAC-G drove a successful expression of the VHSV glycoprotein G (G), the only antigen of the virus conferring in vivo protection. Furthermore, and by means of in vitro fusion assays, it was confirmed that G protein expressed from pJAC-G was fully functional. Altogether, these results suggest that DNA vaccines containing host-homologous gene regulatory sequences might be useful for developing safer DNA vaccines, while they also might be useful for basic studies. © 2012 Springer-Verlag. | URI: | http://hdl.handle.net/10261/294950 | DOI: | 10.1007/s00253-012-4403-7 | ISSN: | 0175-7598 | E-ISSN: | 1432-0614 |
Aparece en las colecciones: | (INIA) Artículos |
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