Selection of novel TB vaccine candidates and their evaluation as DNA vaccines against aerosol challenge.

Abstract:

:Putative TB vaccine candidates were selected from lists of genes induced in response to in vivo-like stimuli, such as low oxygen and carbon starvation or growth in macrophages, and tested as plasmid DNA vaccines for their ability to protect against Mycobacterium tuberculosis challenge in a guinea pig aerosol infection model. This vaccination method was chosen as it induces the Th1 cell-mediated immune response required against intracellular pathogens such as M. tuberculosis. Protection was assessed in the guinea pig model in terms of mycobacteria present in the lungs at 30 days post-challenge. Protection achieved by the novel candidates was compared to BCG (positive control) and saline (negative control). Four vaccines encoding for proteins such as PE and PPE proteins, a zinc metalloprotease and an acyltransferase, gave a level of protection that was statistically better than saline in the lungs. These findings have enabled us to focus on a sub-set of vaccine candidates for further evaluation using additional vaccination strategies.

journal_name

Vaccine

journal_title

Vaccine

authors

Vipond J,Vipond R,Allen-Vercoe E,Clark SO,Hatch GJ,Gooch KE,Bacon J,Hampshire T,Shuttleworth H,Minton NP,Blake K,Williams A,Marsh PD

doi

10.1016/j.vaccine.2006.05.025

subject

Has Abstract

pub_date

2006-09-11 00:00:00

pages

6340-50

issue

37-39

eissn

0264-410X

issn

1873-2518

pii

S0264-410X(06)00590-1

journal_volume

24

pub_type

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