IL-10 exacerbates xenogeneic GVHD by inducing massive human T cell expansion.
IL-10 exacerbates xenogeneic GVHD by inducing massive human T cell expansion.
复制标题
IL-10通过诱导大量的人类T细胞扩张来加剧异构GVHD。
DOI:
10.1016/j.clim.2014.11.004
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发表时间:
2015-01
期刊:
影响因子:
--
通讯作者:
Shankar P
中科院分区:
文献类型:
--
作者:
Abraham S;Choi JG;Ye C;Manjunath N;Shankar P
Although patients with GVHD have elevated serum levels of IL10, whether its role is protective or pathogenic remains unclear. Here, we used a humanized mouse model to study the role of IL-10 in GVHD. When human PBMCs were engrafted in NOD-scid IL2rγcnull mice expressing human IL-10, the T cells underwent massive expansion resulting in lethality by day 21, whereas control mice survived for at least 40 days. Histopathology of the liver showed extensive mononuclear cell infiltration in IL-10 expressing but not in control mice. Corresponding to their aggressiveness, the T cells in the IL-10 group exhibited predominantly an effector memory phenotype (CD45RO+CD27−) while in control mice, the T cells were of transitional memory phenotype (CD45RO+CD27+). Further, IL-10 receptor blocking antibody was able to protect the animals from GVHD. Since our results demonstrate a direct pathogenic role for IL-10, blockade of IL-10 signaling may provide a therapeutic option for GVHD.
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