Abstract
The migratory behavior of antigen-presenting cells was investigated in vivo. Purified murine splenic dendritic cells and splenic and peritoneal macrophages were labelled and injected subcutaneously in the hind foot-pads of mice and monitored for seven days. In the first 24 h, a small quantity of label was recovered from popliteal but not inguinal lymph nodes with radioactive (111In-oxine and 3H-uridine) but not fluorescent (1,1dioctadecyl 3,3,33tetramethylindocarbocyanine perchlorate and fluorescein isothiocyanate) labelling of the antigen-presenting cells. Chemical fixation of the injected antigen-presenting cells had no effect on the detection of label in the popliteal lymph nodes, suggesting that it was unlikely to be due to active cellular migration. Label recovery from hind feet declined with time over the seven day period and was independent of the label type. Essentially the same observations were made whether the antigen-presenting cells were syngeneic or allogeneic to the infected mice and irrespective of the type of antigen-presenting cell used. However, allogeneic antigen-presenting cells, which did not migrate to the draining lymph nodes, successfully primed T lymphocytes in these lymph nodes as shown by a secondary in vitro mixed leukocyte reaction. Again, chemical fixation of the injected antigen-presenting cells had no effect on their ability to prime allogeneic T lymphocytes in the draining lymph nodes. These experiments suggest that, during experimental allo-sensitization via the subcutaneous route, indirect priming of allogeneic T lymphocytes may be a dominant pathway.
Original language | English |
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Pages (from-to) | 362-377 |
Number of pages | 16 |
Journal | Immunobiology |
Volume | 186 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1992 |
Keywords
- Id UdR
- H-UdR
- 1,1'-dioctadecyl 3,3,3',3' -tetramethylindocarbocyanine perchlorate
- 5-H-uridine
- 5-[I]Iodo-2'deoxyuridine
- Ab
- antibody
- antigen-presenting cell
- APC
- CM-10
- complete medium containing 10% FCS
- counts per minute
- cpm
- DC
- DiI
- EA
- erythrocyte antibody
- FITC
- fluorescein isothiocyanate
- Hanks' balanced salt solution
- HBSS
- HBSS-5
- LD
- low density splenic cells
- lymphoid dendritic cell
- minor lymphocyte stimulating
- Mls
- peritoneal macrophage
- PMΦ
- SMΦ
- splenic macrophage