Omega-1, a glycoprotein secreted by Schistosoma mansoni eggs, drives Th2 responses.

Omega-1, a glycoprotein secreted by Schistosoma mansoni eggs, drives Th2 responses.
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DOI:
10.1084/jem.20082460
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发表时间:
2009-08-03
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Schramm G
Schramm G
中科院分区:
其他
文献类型:
--
作者:
Everts B;Perona-Wright G;Smits HH;Hokke CH;van der Ham AJ;Fitzsimmons CM;Doenhoff MJ;van der Bosch J;Mohrs K;Haas H;Mohrs M;Yazdanbakhsh M;Schramm G

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曼氏血吸虫寄生蠕虫的可溶性卵抗原(曼氏血吸虫卵抗原 [SEA])在体外和体内均诱导强烈的 Th2 反应。然而,引发 Th2 反应发展的特定分子尚未确定。我们报道,omega-1 是一种由曼氏链球菌卵分泌并存在于 SEA 中的糖蛋白,能够在体外调节人类单核细胞来源的树突状细胞,以驱动辅助性 T 2 (Th2) 极化,其特征与整个 SEA 相似。此外,使用 IL-4 双报告小鼠,我们表明,即使在没有 IL-4R 信号传导的情况下,单独的天然和重组 omega-1 也足以在体内产生 Th2 反应。最后,omega-1 耗尽的 SEA 在体外显示出 Th2 启动能力受损,但在体内则不然,这表明 SEA 中存在其他因素可以补偿 omega-1 介导的效应。总的来说,我们确定 omega-1(SEA 的单一成分)是 Th2 反应的有效诱导剂。
Soluble egg antigens of the parasitic helminth Schistosoma mansoni (S. mansoni egg antigen [SEA]) induce strong Th2 responses both in vitro and in vivo. However, the specific molecules that prime the development of Th2 responses have not been identified. We report that omega-1, a glycoprotein which is secreted from S. mansoni eggs and present in SEA, is capable of conditioning human monocyte-derived dendritic cells in vitro to drive T helper 2 (Th2) polarization with similar characteristics as whole SEA. Furthermore, using IL-4 dual reporter mice, we show that both natural and recombinant omega-1 alone are sufficient to generate Th2 responses in vivo, even in the absence of IL-4R signaling. Finally, omega-1–depleted SEA displays an impaired capacity for Th2 priming in vitro, but not in vivo, suggesting the existence of additional factors within SEA that can compensate for the omega-1–mediated effects. Collectively, we identify omega-1, a single component of SEA, as a potent inducer of Th2 responses.
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