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Science TM:表达Ag85A的复制缺陷的腺病毒载体5疫苗可能具有强大抗结核病作用

2013-10-22 新华网 新华网

加拿大麦克马斯特大学研究人员最近研发出一种结核病疫苗,这一成果有望取代目前唯一且已使用了50年的结核病疫苗——卡介菌苗(BCG),研究结果在日前出版的《科学—转化医学》杂志上发表,论文显示新疫苗十分安全且对结核病有强大免疫效果。这种疫苗由表达Ag85A的复制缺陷的腺病毒载体5疫苗AdHu5Ag85A ,具有强大刺激T细胞免疫的机能。 结核病是全世界仅次于艾滋病的第二大致命传染病。据统计,世界上三

加拿大麦克马斯特大学研究人员最近研发出一种结核病疫苗,这一成果有望取代目前唯一且已使用了50年的结核病疫苗——卡介菌苗(BCG),研究结果在日前出版的《科学—转化医学》杂志上发表,论文显示新疫苗十分安全且对结核病有强大免疫效果。这种疫苗由表达Ag85A的复制缺陷的腺病毒载体5疫苗AdHu5Ag85A ,具有强大刺激T细胞免疫的机能。

结核病是全世界仅次于艾滋病的第二大致命传染病。据统计,世界上三分之一的人口受到结核杆菌的感染。世界卫生组织报告称结核病在2011年造成140万人死亡,870万人患病。另外,结核杆菌的抗药性越来越强,这也使得结核病的预防变得愈发重要。

加拿大西多伦多医院结核病诊所创办人兼主管Michael Gardam博士说:“结核病菌与人体免疫系统有着十分复杂的关系。这也给发现对抗它的疫苗带来很多困难。”研究人员用了10年时间来研究新疫苗,24位志愿者曾接种了新疫苗。在最早的研究中,新疫苗是以手臂注射的形式接种,研究人员计划开发一个可以将疫苗直接吸入肺部的装置,这将使预防更加有效。

原始出处:

Smaill F, Jeyanathan M, Smieja M, Medina MF, Thanthrige-Don N, Zganiacz A, Yin C, Heriazon A, Damjanovic D, Puri L, Hamid J, Xie F, Foley R, Bramson J, Gauldie J, Xing Z. A human type 5 adenovirus-based tuberculosis vaccine induces robust T cell responses in humans despite preexisting anti-adenovirus immunity. Sci Transl Med. 2013 Oct 2;5(205):205ra134.

 


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    2014-03-13 mei539
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    2013-10-24 jichang
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    2013-10-24 wgx309

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利什曼原虫是世界上仅次于造成疟疾的疟原虫的最致命的寄生虫之一。这种寄生虫是通过雌性沙蝇的叮咬传播的,它会引起不同形式的利什曼病——这是一种以皮肤溃疡及内脏肿大为特征的疾病。利什曼病影响着全世界大约1200万人,然而还没有疫苗预防这种疾病,且用于治疗这种疾病的少数药物毒性很大、价格昂贵且容易产生耐药性。Rajan Guha及其同事在此显示,可以利用利什曼原虫对血红素的需要从而制造出一种针对这种寄生虫

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