复制无能力的腺病毒疫苗载体引起有效的抗免疫缺陷病毒免疫力
John W Shiver1, Tong-Ming Fu, Ling Chen
1Merck Research Laboratories, West Point, Pennsylvania 19486, USA.
Nature
|January 18, 2002
概括
复制无能力的5型腺病毒 (Ad5) 载体在子中有效诱导细胞免疫反应对抗猿类免疫缺陷病毒 (SIV). 单独或作为助推剂的Ad5载体在挑战后显示出显著的病毒衰减,这表明对HIV-1疫苗开发有希望.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 病毒学 病毒学
背景情况:
- 抗病毒细胞免疫反应对于控制人类免疫缺陷病毒1型 (HIV-1) 和猿类免疫缺陷病毒 (SIV) 感染至关重要.
- 评估不同的疫苗载体系统对于开发有效的HIV-1疫苗至关重要.
研究的目的:
- 为了比较评估DNA,修饰的疫苗安卡拉 (MVA) 和腺病毒5型 (Ad5) 载体,以评估它们在非人类灵长类动物中引起细胞免疫反应对SIV gag蛋白的能力.
- 确定这些载体在控制致病性猿人免疫缺陷病毒 (SHIV) 挑战中的有效性.
主要方法:
- 非人类灵长类动物用DNA,MVA或表达SIV gag蛋白的复制无能Ad5载体进行免疫,单独或组合方案.
- 疫苗的有效性是通过测量细胞免疫反应和病毒载量,以病原性SHIV.挑战后评估.
主要成果:
- 复制无能的Ad5载体引起了最强大的免疫反应,特别是当单独使用或作为DNA原始化后的助推剂时.
- Ad5 载体免疫接种导致了挑战后SHIV感染的最显著减弱.
- 该研究表明,Ad5载体在诱导对SIV/SHIV的保护性免疫反应方面具有优越性.
结论:
- 复制缺陷的Ad5载体是高效的疫苗输送系统,可以引起抗病毒细胞免疫力.
- Ad5 载体为开发有效的HIV-1 疫苗提供了一个有前途的平台.
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