Abstract
Dendritic cell (DC) maturation is an innate response that leads to adaptive immunity to coadministered proteins. To begin to identify underlying mechanisms in intact lymphoid tissues, we studied α-galactosylceramide. This glycolipid activates innate Vα14+ natural killer T cell (NKT) lymphocytes, which drive DC maturation and T cell responses to ovalbumin antigen. Hours after giving glycolipid i.v., tumor necrosis factor (TNF)–α and interferon (IFN)-γ were released primarily by DCs. These cytokines induced rapid surface remodeling of DCs, including increased CD80/86 costimulatory molecules. Surprisingly, DCs from CD40−/− and CD40L−/− mice did not elicit CD4+ and CD8+ T cell immunity, even though the DCs exhibited presented ovalbumin on major histocompatibility complex class I and II products and expressed high levels of CD80/86. Likewise, an injection of TNF-α up-regulated CD80/86 on DCs, but CD40 was required for immunity. CD40 was needed for DC interleukin (IL)-12 production, but IL-12p40−/− mice generated normal ovalbumin-specific responses. Therefore, the link between innate and adaptive immunity via splenic DCs and innate NKT cells has several components under distinct controls: antigen presentation in the steady state, increases in costimulatory molecules dependent on inflammatory cytokines, and a distinct CD40/CD40L signal that functions together with antigen presentation (“signal one”) and costimulation (“signal two”) to generate functioning CD4+ T helper cell 1 and CD8+ cytolytic T lymphocytes.
Bibliography
Fujii, S., Liu, K., Smith, C., Bonito, A. J., & Steinman, R. M. (2004). The Linkage of Innate to Adaptive Immunity via Maturing Dendritic Cells In Vivo Requires CD40 Ligation in Addition to Antigen Presentation and CD80/86 Costimulation. The Journal of Experimental Medicine, 199(12), 1607â1618.
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Dates
Type | When |
---|---|
Created | 21 years, 2 months ago (June 15, 2004, 2:28 p.m.) |
Deposited | 2 years, 1 month ago (July 25, 2023, 8:32 a.m.) |
Indexed | 1 week, 3 days ago (Aug. 20, 2025, 8:43 a.m.) |
Issued | 21 years, 2 months ago (June 14, 2004) |
Published | 21 years, 2 months ago (June 14, 2004) |
Published Online | 21 years, 2 months ago (June 14, 2004) |
Published Print | 21 years, 2 months ago (June 21, 2004) |
@article{Fujii_2004, title={The Linkage of Innate to Adaptive Immunity via Maturing Dendritic Cells In Vivo Requires CD40 Ligation in Addition to Antigen Presentation and CD80/86 Costimulation}, volume={199}, ISSN={0022-1007}, url={http://dx.doi.org/10.1084/jem.20040317}, DOI={10.1084/jem.20040317}, number={12}, journal={The Journal of Experimental Medicine}, publisher={Rockefeller University Press}, author={Fujii, Shin-ichiro and Liu, Kang and Smith, Caroline and Bonito, Anthony J. and Steinman, Ralph M.}, year={2004}, month=jun, pages={1607–1618} }