First Author | Sauer KA | Year | 2008 |
Journal | J Immunol | Volume | 181 |
Issue | 9 | Pages | 6148-57 |
PubMed ID | 18941205 | Mgi Jnum | J:140735 |
Mgi Id | MGI:3814486 | Doi | 10.4049/jimmunol.181.9.6148 |
Citation | Sauer KA, et al. (2008) Immunosurveillance of lung melanoma metastasis in EBI-3-deficient mice mediated by CD8+ T cells. J Immunol 181(9):6148-57 |
abstractText | EBV-induced gene 3 (EBI-3) codes for a soluble type I receptor homologous to the p40 subunit of IL-12 that is expressed by APCs following activation. In this study, we assessed the role of EBI-3 in a model of lung melanoma metastasis. Intravenous injection of the B16-F10 cell line resulted in a significant reduction of lung tumor metastasis in EBI-3(-/-) recipient mice compared with wild-type mice. The immunological finding accompanying this effect was the expansion of a newly described cell subset called IFN-gamma producing killer dendritic cells associated with CD8(+) T cell responses in the lung of EBI-3(-/-) mice including IFN-gamma release and TNF-alpha-induced programmed tumor cell death. Depletion of CD8(+) T cells as well as targeting T-bet abrogated the protective effects of EBI-3 deficiency on lung melanoma metastases. Finally, adoptive transfer of EBI-3(-/-) CD8(+) T cells into tumor bearing wild-type mice inhibited lung metastasis in recipient mice. Taken together, these data demonstrate that targeting EBI-3 leads to a T-bet-mediated antitumor CD8(+) T cell responses in the lung. |