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| Azevedo,V.; Levitus,G.; Miyoshi,A.; Cândido,A.L.; Goes,A.M.; Oliveira,S.C.. |
| DNA-based immunization has initiated a new era of vaccine research. One of the main goals of gene vaccine development is the control of the levels of expression in vivo for efficient immunization. Modifying the vector to modulate expression or immunogenicity is of critical importance for the improvement of DNA vaccines. The most frequently used vectors for genetic immunization are plasmids. In this article, we review some of the main elements relevant to their design such as strong promoter/enhancer region, introns, genes encoding antigens of interest from the pathogen (how to choose and modify them), polyadenylation termination sequence, origin of replication for plasmid production in Escherichia coli, antibiotic resistance gene as selectable marker,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic immunization; DNA plasmid; Enhancer/promoter region; Immunostimulatory sequences (ISS); Antigens; Immune response. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000200002 |
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| Freitas,D.A.; Leclerc,S.; Miyoshi,A.; Oliveira,S.C.; Sommer,P.S.M.; Rodrigues,L.; Correa Junior,A.; Gautier,M.; Langella,P.; Azevedo,V.A.; Le Loir,Y.. |
| Lactococcus lactis, the model lactic acid bacterium, is a good candidate for heterologous protein production in both foodstuffs and the digestive tract. We attempted to produce Streptomyces tendae antifungal protein 1 (Afp1) in L. lactis with the objective of constructing a strain able to limit fungal growth. Since Afp1 activity requires disulfide bond (DSB) formation and since intracellular redox conditions are reportedly unfavorable for DSB formation in prokaryotes, Afp1 was produced as a secreted form. An inducible expression-secretion system was used to drive Afp1 secretion by L. lactis; Afp1 was fused or not with LEISSTCDA, a synthetic propeptide (LEISS) that has been described to be a secretion enhancer. Production of Afp1 alone was not achieved, but... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactococcus lactis; Antifungal protein; Secretion; Streptomyces tendae antifungal protein 1. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001100004 |
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