Expression of cholera toxin epitopes inserted in flagellin by attenuated Salmonella strains
Rev. bras. genét
; 17(3): 249-54, set. 1994. ilus, tab
Article
en En
| LILACS
| ID: lil-165255
Biblioteca responsable:
BR1.1
RESUMO
A novel antigen expression system has recently been developed by means of bacterial flagella, which are potent immunogens (Newton et al., Science 24470-72,1989). Here we show the insertion of two epitopes from the cholera toxin B-subunit in Salmonella flagelin, CTP-1 (residues 8-20) and CTP-3 (residues 50-64) (Jacob et al., Proc. Natl Acad. Sci. USA 81 7893-7896, 1984). First, we inserted CTP-1 for expression as a flagellar fusion; a hybrid flagellin expressing CTP-1 and CTP-3 in the hypervariable region of the flagellin gene was also constructed in an attempt to increase the cholera toxin neutralization potential, as well as to address some practical questions concerning the flagellar antigen expression system. The resulting constructs were non-motile although expression of chimeric flagellin was detected by immunoblotting and electron microscopy. One of the constructs (CTP-l + CTP-3) severely affected flagellin expression.
Buscar en Google
Índice:
LILACS
Asunto principal:
Salmonella
/
Toxina del Cólera
/
Flagelina
Idioma:
En
Revista:
Rev. bras. genét
Asunto de la revista:
GENETICA
/
HISTOLOGIA
Año:
1994
Tipo del documento:
Article
/
Project document