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Published on: April 20, 2011
探索自然获得的对Pvs47体球细胞抗原的反应
Gisele Tatiane Soares da Veiga1, Rafael Amaral Donassolo1, Sofia Forcellini1,2
1Laboratório de Pesquisa em Apicomplexa, Instituto Carlos Chagas, Fundação Oswaldo Cruz (Fiocruz), Curitiba, PR, Brazil.
这项研究突出了Pvs47和Pvs47.
科学领域:
- 免疫学 免疫学 免疫学
- 寄生虫学的寄生虫学
- 疫苗开发 疫苗开发
背景情况:
- 活性疟原虫疟疾是一个主要的全球卫生挑战,在巴西普遍存在.
- 准像Pvs47这样的游戏细胞抗原是阻止疟疾传播的有希望的策略.
- 在疫苗配方中Pvs47的潜力仍未得到充分探索.
研究的目的:
- 使用in silico方法来描述Pvs47.
- 评估来自巴西疟疾流行地区的个体的Pvs47抗原性.
- 评估Pvs47在P.vivax疫苗开发中的潜力.
主要方法:
- 在Pvs47物理化学性质,结构,表位和保存的分析.
- 在真核系统中,重组Pvs47蛋白质表达.
- 免疫酶学测试用于评估亚马逊人群中的抗原性和抗体反应 (IgM,IgG,IgG子类).
主要成果:
- 所有样本都显示出抗Pvs47的IgM和IgG抗体,IgG3占主导地位.
- 无症状的个体表现出更强烈和更多样化的IgG反应.
- 抗Pvs47 IgM反应与体细胞血症有负相关性,这表明体细胞特异性影响.
- Pvs47的识别能力与PvAMA1和PvMSP119相当或超过.
- 在P. vivax无性和性阶段免疫反应之间观察到正相关性.
结论:
- 在亚马逊人群中,Pvs47在抗体反应中非常普遍.
- 针对Pvs47的IgM反应对游戏细胞清除至关重要.
- Pvs47的表征和抗原性数据支持将其纳入P. vivax疫苗策略.
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