Abstract
Whereas dendritic cells (DC) are known to be potent activators of T cells both in vitro and in vivo, the critical costimulatory molecules expressed on DC are not well characterized. Using immunocytochemical and molecular techniques we find that splenic DC express B7/BB1, the counter-receptor for CD28. Moreover, expression of B7/BB1 is upregulated on epidermal Langerhans cells (LC) during their functional maturation into potent T cell stimulators. In blocking experiments, we find that participation of B7/BB1 is required for optimal proliferation of unprimed, allogeneic T cells in DC-driven, primary mixed leukocyte reactions. These data demonstrate that the regulated expression of B7/BB1 on DC may be important in the initiation of a primary T cell response.
Dates
Type | When |
---|---|
Created | 21 years, 2 months ago (June 24, 2004, 3:56 a.m.) |
Deposited | 2 years, 1 month ago (July 25, 2023, 12:46 a.m.) |
Indexed | 1 month, 1 week ago (July 24, 2025, 7:06 a.m.) |
Issued | 32 years, 11 months ago (Oct. 1, 1992) |
Published | 32 years, 11 months ago (Oct. 1, 1992) |
Published Online | 32 years, 11 months ago (Oct. 1, 1992) |
Published Print | 32 years, 11 months ago (Oct. 1, 1992) |
@article{Larsen_1992, title={Functional expression of the costimulatory molecule, B7/BB1, on murine dendritic cell populations.}, volume={176}, ISSN={1540-9538}, url={http://dx.doi.org/10.1084/jem.176.4.1215}, DOI={10.1084/jem.176.4.1215}, number={4}, journal={The Journal of experimental medicine}, publisher={Rockefeller University Press}, author={Larsen, C P and Ritchie, S C and Pearson, T C and Linsley, P S and Lowry, R P}, year={1992}, month=oct, pages={1215–1220} }