Estimation of low frequency antigen-presenting cells with a novel RELISPOT assay

被引:2
作者
Dzutsev, Amiran K. [1 ]
Belyakov, Igor A. [1 ]
Isakov, Dmitry V. [1 ]
Gagnon, Susan J. [1 ]
Margulies, David H. [2 ]
Berzofsky, Jay A. [1 ]
机构
[1] NCI, Ctr Canc Res, Vaccine Branch, NIH, Bethesda, MD 20892 USA
[2] NIAID, NIH, Immunol Lab, Bethesda, MD 20892 USA
关键词
antigen-presenting cell; T-cell line; ELISPOT; RELISPOT; dendritic cell; migration; vaccinia virus;
D O I
10.1016/j.jim.2008.01.008
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Adequate presentation of self and foreign antigens is a key factor for efficient T-cell immunosurveillance against pathogens and tumors. Cells presenting foreign antigens usually comprise a rare population and are difficult to detect even at the peak of infection. Here we demonstrate a CD8(+) T-cell-based approach that allows detection of specific antigen-presenting cells (APC) at a frequency of less than 0.0005%. When T cells are in excess, they form rosettes with rare APCs, which appear as single spots in an IFN-gamma ELISPOT assay. Using this RELISPOT (Rosette ELISPOT) method we demonstrate the dynamic interplay between CD8 T cells and professional and non-professional APCs following virus challenge. Published by Elsevier B.V.
引用
收藏
页码:71 / 78
页数:8
相关论文
共 27 条