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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Regulation of the immune response to tumor antigens. X. Activation of third-order suppressor T cells that abrogate anti-tumor immune responses.

The experiments described further define the suppressor T cell pathway in the S1509a tumor system. We demonstrated previously that S1509a-induced Ts1, TsF1, and Ts2 specifically suppress in vivo Ly1+2- T cell-dependent responses to S1509a and that Ts1 suppress in vivo Ly-1+2- T cell-mediated proliferative responses to S1509a. We have now shown that in vivo administration of either S1509a-induced TsF1 or TsF2 suppresses both in vivo and in vitro Ly-1+2- T cell-mediated responses to S1509a. Furthermore, we revealed the existence of Ts3, which are activated by S1509a tumor antigen and TsF2, in this murine tumor system. Finally, we demonstrated that cyclophosphamide abrogates the suppressive effect of TsF2 but not that of Ts3. These results are discussed with respect to T cell-mediated suppression in other murine tumor systems and the possible pivotal role for a tumor antigen-presenting cell in activating Ts3 in the S1509a tumor system.[1]

References

  1. Regulation of the immune response to tumor antigens. X. Activation of third-order suppressor T cells that abrogate anti-tumor immune responses. Schatten, S., Drebin, J.A., Perry, L.L., Chung, W., Greene, M.I. J. Immunol. (1984) [Pubmed]
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