Sweetser M T, Braciale V L, Braciale T J
Department of Pathology, Washington University School of Medicine, St. Louis, Missouri 63110.
J Exp Med. 1989 Oct 1;170(4):1357-68. doi: 10.1084/jem.170.4.1357.
The influenza hemagglutinin is a critical regulator of disease expression during influenza virus infection and serves as a major target for the host immune response to this pathogen. In this report, we have analyzed an immunodominant site on the hemagglutinin (residues 202-221) recognized by murine class I MHC-restricted T lymphocytes. This analysis has revealed evidence for the duplication of a T cell recognition site within the region 202-221. We have also identified critical amino acids necessary for class I-restricted T cell recognition within these two epitopes. In addition, we provide evidence that a site on the influenza hemagglutinin recognized by neutralizing antibody directly overlaps with an epitope recognized by class I MHC-restricted CTL.
流感血凝素是流感病毒感染期间疾病表现的关键调节因子,也是宿主针对该病原体的免疫反应的主要靶点。在本报告中,我们分析了血凝素上一个被小鼠I类MHC限制性T淋巴细胞识别的免疫显性位点(第202 - 221位氨基酸残基)。该分析揭示了在202 - 221区域内存在一个T细胞识别位点重复的证据。我们还确定了这两个表位中I类限制性T细胞识别所必需的关键氨基酸。此外,我们提供的证据表明,流感血凝素上一个被中和抗体识别的位点与一个被I类MHC限制性CTL识别的表位直接重叠。