Brooks J V, Frank A A, Keen M A, Bellisle J T, Orme I M
Mycobacteria Research Laboratories, Colorado State University, Fort Collins, Colorado 80523, USA.
Infect Immun. 2001 Apr;69(4):2714-7. doi: 10.1128/IAI.69.4.2714-2717.2001.
An effective new vaccine for the control of tuberculosis is badly needed. While current research attempts to improve vaccination are concentrating on new prophylactic or immunotherapeutic vaccines, virtually no emphasis has been placed on boosting individuals already inoculated with Mycobacterium bovis BCG. It is shown here that mice vaccinated with BCG gradually lose their capacity to resist an aerosol challenge infection as they age. However, if these mice are inoculated with the 30-kDa mycolyl transferase A protein in midlife, after challenge when aged they express levels of protection in the lungs comparable to those of young mice, associated with minimal pathological damage.
迫切需要一种有效的新型结核病控制疫苗。虽然目前旨在改进疫苗接种的研究主要集中在新型预防性或免疫治疗性疫苗上,但几乎没有强调增强已经接种卡介苗的个体的免疫力。本文表明,接种卡介苗的小鼠随着年龄增长逐渐失去抵抗气溶胶攻击感染的能力。然而,如果这些小鼠在中年时接种30 kDa分枝杆菌酸转移酶A蛋白,在老年时受到攻击后,它们肺部的保护水平与年轻小鼠相当,且病理损伤最小。