The Potentiation of IFN-g and Induction of Cytotoxic Proteins by Pegylated IL-10 in Human CD 8 T Cells

The Potentiation of IFN-g and Induction of Cytotoxic Proteins by Pegylated IL-10 in Human CD 8 T Cells
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聚乙二醇化 IL-10 在人 CD 8 T 细胞中增强 IFN-g 和诱导细胞毒性蛋白

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发表时间:
2015
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影响因子:
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通讯作者:
J. Mumm
J. Mumm
中科院分区:
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作者:
I. Chan;Victoria H. Wu;Melissa Bilardello;Elliot Mar;M. Oft;P. Vlasselaer;J. Mumm

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白细胞介素-10 (IL-10)具有免疫抑制和免疫刺激双重作用。虽然免疫抑制作用众所周知,但最近才有报道称聚乙二醇化重组人il -10 (PEG-rHuIL-10)在小鼠肿瘤模型中引发了有效的干扰素-g (IFN-g)和CD8 t细胞依赖性抗肿瘤作用。在这项研究中,我们发现PEG-rHuIL-10对人外周血单核细胞(PBMC)散装培养具有免疫抑制作用,并对同一培养中的CD8 T细胞具有刺激作用。此外,在分离的CD8 T细胞中,PEG-rHuIL-10增强了原型Tc1细胞因子IFN-g的表达,并诱导穿孔素和颗粒酶B的分泌。IFN-g和颗粒酶B的分泌依赖于t细胞受体的连接,因此不会被PEG-rHuIL-10不加选择地释放。STAT3、NF-kB、AP1和MEK抑制可阻断IFN-g增强,而AP1抑制可阻断穿孔蛋白的诱导,AP1和MEK抑制可阻断颗粒酶B的诱导。这些结果将先前聚乙二醇化IL-10的临床前研究结果扩展到人类CD8 T细胞,并暗示了在癌症治疗中使用聚乙二醇化IL-10的强烈翻译程度。
Interleukin-10 (IL-10) exerts both immunosuppressive and immunostimulatory effects. While the immunosuppressive effects are widely known, it has only been recently reported that pegylated recombinant human IL10 (PEG-rHuIL-10) elicits potent interferon-g (IFN-g) and CD8 T-cell-dependent antitumor effects in murine tumor models. In this study, we show that PEG-rHuIL-10 exerts immune inhibitory effects on human peripheral blood mononuclear cell (PBMC) bulk cultures and stimulatory effects in CD8 T cells within the same culture. Also, in isolated CD8 T cells, PEG-rHuIL-10 potentiates prototypic Tc1 cytokine IFN-g expression and induces perforin and granzyme B secretion. IFN-g and granzyme B secretion is dependent on T-cell receptor ligation and is therefore not indiscriminately released by PEG-rHuIL-10 treatment. STAT3, NF-kB, AP1, and MEK inhibition blocks IFN-g potentiation, while perforin induction is impeded by AP1 inhibition, and granzyme B induction is blocked by both AP1 and MEK inhibition. These results extend previous pegylated IL-10 preclinical findings to human CD8 T cells and implicate a strong degree of translation for pegylated IL-10 use in cancer therapy.
全身给予细胞IL-10可诱导针对小鼠体内已形成肿瘤的有效、特异且持久的免疫反应。
DOI: --
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