Expanding the antigenic repertoire of BCG improves protective efficacy against aerosol Mycobacterium tuberculosis infection

被引:33
作者
Palendira, U
Spratt, JM
Britton, WJ
Triccas, JA
机构
[1] Centenary Inst Canc Med & Cell Biol, Mycobacteriol Res Grp, Newton, NSW 2042, Australia
[2] PO Royal Brisbane Hosp, Queensland Inst Med Res, Cooperat Res Ctr Vaccine Technol, Brisbane, Qld 4029, Australia
[3] Univ Sydney, Dept Med, Sydney, NSW 2006, Australia
基金
英国医学研究理事会;
关键词
tuberculosis; vaccine; recombinant BCG; secreted antigens;
D O I
10.1016/j.vaccine.2004.10.007
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
We have developed a strain of the tuberculosis vaccine Mycobacterium bovis bacille Calmette Guerin (BCG) that secretes high levels of a fusion protein comprising the immunodominant Mycobacterium tuberculosis Ag85B and ESAT-6 (BCG(85B-ES)). Mice vaccinated with BCG85B-ES were significantly better protected in the lung against aerosol infection with virulent M. tuberculosis than animals immunized with control BCG. The growth characteristic of BCG85B-ES in host tissue was identical to control BCG, suggesting the improved protective efficacy was directly related to the expression of the Ag85B-ESAT-6 fusion protein. These results suggest that BCG(85B-ES) warrants further investigation to determine its suitability to control tuberculosis in humans. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1680 / 1685
页数:6
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