Afferent lymph veiled cells stimulate proliferative responses in allogeneic CD4(+) and CD8(+) T cells but not gamma delta TCR(+) T cells

被引:26
作者
Howard, CJ
Sopp, P
Brownlie, J
Parsons, KR
Kwong, LS
Collins, RA
机构
[1] Royal Veterinary College, North Mymms, Hatfield, AL9 7TA, Hawkshead Lane
[2] Institute for Animal Health, Compton, Near Newbury, Berkshire
[3] Institute for Animal Health, Near Newbury, Berkshire
关键词
D O I
10.1046/j.1365-2567.1996.d01-680.x
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Dendritic cells were identified in afferent lymph derived by lymphatic cannulation of cattle, stained with monoclonal antibody (mAb) to the bovine workshop cluster 6 (WC6) antigen, which is highly expressed on bovine afferent lymph veiled cells, and sorted with a fluorescence-activated cell sorter. These cells expressed major histocompatibility complex (MHC) class I and II and CD1b but not CD14. They bound human and murine CTLAL4-immunoglobulin (CTLA4-Ig) fusion proteins indicating expression of CD80 and or CD86. Dendritic cells induced proliferative responses in allogeneic CD4(+) and CD8(+) cells sorted from blood but did not induce responses in purified allogeneic WCl+, gamma/delta T cells, which are CD2(-), CD4(-), CD8(-) and are the major gamma delta T-cell population in cattle blood, even when interleukin-2 (IL-2) was added to cultures. A WCl-, CD2(+) gamma delta T-cell receptor (TCR)(+) population predominates in cattle spleens and proliferation of a T-cell line with this phenotype was not induced by allogeneic dendritic cells, with or without added IL-2. The observations imply that the ligand for the gamma delta TCR expressed on the two populations is not present on allogeneic dendritic cells or that the costimulatory molecules expressed on dendritic cells that render them highly effective at stimulating MHC class I- and class II-restricted CD8(+) and CD4(+) T cells are not recognized by the WCl+ or WCl- gamma/delta T cells. Expression of CD28 by the four cell types was assessed by reverse transcriptase-polymerase chain reaction (RT-PCR). Purified CD4(+) and CD8(+) cells both produced CD28 transcripts but neither purified WCl+ cells nor the WCl- gamma delta TCR(+) cell line did so. The findings indicate that CD80 and or CD86 are involved in the stimulation of CD4(+) and CD8(+) alpha beta TCR(+) T cells but not in the stimulation of either of the two gamma delta TCR(+) populations.
引用
收藏
页码:558 / 564
页数:7
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