Tumor regulatory T cells potently abrogate antitumor immunity.
Tumor regulatory T cells potently abrogate antitumor immunity.
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DOI:
10.4049/jimmunol.0802664
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发表时间:
2009-05-15
期刊:
影响因子:
--
通讯作者:
You Z
中科院分区:
文献类型:
--
作者:
Liu Z;Kim JH;Falo LD Jr;You Z
Treg from mice bearing a breast tumor were elevated (tumor Treg). In vitro, whereas tumor Treg ability to inhibit tumor-primed CD4+ T cell activity is comparable to Treg from naïve mice (naïve Treg), only tumor Treg suppress naïve CD8+ T cell activation and DC function. Neither tumor Treg nor naïve Treg can suppress antitumor immunity at the effector phase of the immune response induced by adoptively-transferred tumor-primed CD4+ T cells. This is consistent with the observation that, in this model, neither tumor Treg nor naïve Treg can inhibit effectors in vitro or in vivo. However, tumor Treg abrogate tumor-specific CD8+ T cell responses in TDLN and antitumor immunity at the early stage of the immune response induced by adoptively-transferred tumor-primed CD4+ T cells. These data indicate that, in this model, tumor Treg potently abrogate tumor-specific CD8+ T cell responses in TDLN, thereby suppressing antitumor immunity at the early stage of the immune response induced by adoptively-transferred tumor-primed CD4+ T cells.
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