...
首页> 外文期刊>Infection and immunity >CD8+ T Cells Eliminate Liver-Stage Plasmodium berghei Parasites without Detectable Bystander Effect
【24h】

CD8+ T Cells Eliminate Liver-Stage Plasmodium berghei Parasites without Detectable Bystander Effect

机译:CD8 + T细胞可消除没有检测到旁观者效应的伯氏疟原虫

获取原文
           

摘要

Immunization with attenuated Plasmodium sporozoites or viral vectored vaccines can induce protective CD8+ T cells that can find and eliminate liver-stage malaria parasites. A key question is whether CD8+ T cells must recognize and eliminate each parasite in the liver or whether bystander killing can occur. To test this, we transferred antigen-specific effector CD8+ T cells to mice that were then coinfected with two Plasmodium berghei strains, only one of which could be recognized directly by the transferred T cells. We found that the noncognate parasites developed normally in these mice, demonstrating that bystander killing of parasites does not occur during the CD8+ T cell response to malaria parasites. Rather, elimination of infected parasites is likely mediated by direct recognition of infected hepatocytes by antigen-specific CD8+ T cells.
机译:用减毒的疟原虫子孢子或病毒载体疫苗免疫可以诱导保护性CD8 + T细胞,该CD8 + T细胞可以发现并消除肝脏阶段的疟疾寄生虫。一个关键的问题是CD8 + T细胞是否必须识别并消除肝脏中的每种寄生虫,或者是否可能发生旁观者杀死。为了测试这一点,我们将抗原特异性效应CD8 + T细胞转移至小鼠,然后再用两种伯氏疟原虫菌株共感染,其中只有一种可以被转移的T细胞直接识别。我们发现非同源寄生虫在这些小鼠中正常发育,表明在对疟疾寄生虫的CD8 + T细胞应答过程中不会发生旁观者杀死寄生虫的情况。而是,抗原特异性CD8 + T细胞直接识别感染的肝细胞可能介导了感染的寄生虫的消除。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号