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Suarez,Carlos Alberto Galeano; Montano,Inti Doraci Cavalcanti; Nucci,Edson Romano; Iemma,Monica Rosas da Costa; Giordano,Raquel de Lima Camargo; Giordano,Roberto de Campos. |
Bacillus megaterium is a promising host for expression of heterologous proteins. This paper reports the nutrient consumption patterns and production of metabolites for three different strains of B. megaterium, ATCC 14945, QMB 1551 and PV 361, which is QMB 1551 with seven constitutive plasmids deleted. 14 h cultivations in agitated flasks were run, for two different media: A (LB plus 10g/L glucose) and B (medium A, with the yeast extract replaced by tryptone). Strains PV361 and QMB 1551 showed higher maximum specific growth rates in medium B, reaching 0.42 h-1 and 0.48 h-1 respectively. The main by-products of the glucose overflow mechanism were acetate and lactate, for all three strains, which had preferential amino acids for substrate: Ala, Asp, Glu, Ser.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Metabolic profile; Bacillus megaterium; Culture media. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000400001 |
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Silva,Adilson José da; Zangirolami,Teresa Cristina; Novo-Mansur,Maria Teresa Marques; Giordano,Roberto de Campos; Martins,Elizabeth Angélica Leme. |
Genetically attenuated microorganisms, pathogens, and some commensal bacteria can be engineered to deliver recombinant heterologous antigens to stimulate the host immune system, while still offering good levels of safety. A key feature of these live vectors is their capacity to stimulate mucosal as well as humoral and/or cellular systemic immunity. This enables the use of different forms of vaccination to prevent pathogen colonization of mucosal tissues, the front door for many infectious agents. Furthermore, delivery of DNA vaccines and immune system stimulatory molecules, such as cytokines, can be achieved using these special carriers, whose adjuvant properties and, sometimes, invasive capacities enhance the immune response. More recently, the unique... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterial vector; Vaccine delivery system; DNA vaccine; Cancer vaccine; Antigen presentation. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400001 |
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