首页> 外文学位 >The Role of T cell Receptor Avidity in Determining T-helper Differentiation Fate of Human CD4+ T cells.
【24h】

The Role of T cell Receptor Avidity in Determining T-helper Differentiation Fate of Human CD4+ T cells.

机译:T细胞受体亲和力在确定人类CD4 + T细胞的T辅助分化命运中的作用。

获取原文
获取原文并翻译 | 示例

摘要

The role of the T cell receptor (TCR) in antigen recognition and activation of T lymphocytes is well established. However, how the TCR affects T-helper differentiation/skewing is less well understood, particularly for human CD4 + (CD4) T cell subsets. Here we investigate the role of TCR specific antigen avidity in differentiation and maintenance of human Th1, Th2 and Th17 subsets. Two human TCRs, both specific for the same peptide antigen but with different avidities, were cloned and expressed in human CD4 T cells. These TCR engineered cells were then stimulated with different concentrations of specific antigen under non T-helper differentiated, pre-differentiated, and differentiating conditions. We show that TCR avidity can control the percentage of IL-4 and IFN-gamma co-expression in non-differentiated TCR engineered cells. Further, we show that effector function can be maintained in a TCR avidity-dependent manner in pre-differentiated TCR engineered cells. Lastly, we show that increased TCR avidity can accelerate Th1 and inhibit Th2 differentiation of TCR engineered cells. This study advances the knowledge of regulating and predicting the differentiation of human CD4 T-helper cells.
机译:T细胞受体(TCR)在抗原识别和T淋巴细胞激活中的作用已得到充分确立。但是,TCR如何影响T辅助细胞分化/偏斜的了解较少,尤其是对于人CD4 +(CD4)T细胞亚群。在这里,我们研究了TCR特异性抗原亲和力在人类Th1,Th2和Th17子集的分化和维持中的作用。克隆了两个对相同肽抗原具有特异性但具有不同亲和力的人TCR,并在人CD4 T细胞中表达。然后在非T辅助细胞分化,预分化和分化条件下,用不同浓度的特异性抗原刺激这些TCR工程细胞。我们表明,TCR亲和力可以控制未分化的TCR工程细胞中IL-4和IFN-γ共表达的百分比。此外,我们表明,在预分化的TCR工程细胞中,可以以TCR亲和力依赖性方式维持效应子功能。最后,我们表明增加的TCR亲和力可以加速TCR工程细胞的Th1并抑制Th2分化。这项研究提高了调节和预测人类CD4 T辅助细胞分化的知识。

著录项

  • 作者

    Adair, Patrick.;

  • 作者单位

    University of Maryland, Baltimore.;

  • 授予单位 University of Maryland, Baltimore.;
  • 学科 Immunology.;Molecular biology.;Cellular biology.
  • 学位 Ph.D.
  • 年度 2016
  • 页码 138 p.
  • 总页数 138
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地球物理学;
  • 关键词

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