The chemotherapeutic agent DMXAA as a unique IRF3-dependent type-2 vaccine adjuvant.

The chemotherapeutic agent DMXAA as a unique IRF3-dependent type-2 vaccine adjuvant.
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DOI:
10.1371/journal.pone.0060038
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Ishii KJ
Ishii KJ
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Tang CK;Aoshi T;Jounai N;Ito J;Ohata K;Kobiyama K;Dessailly BH;Kuroda E;Akira S;Mizuguchi K;Coban C;Ishii KJ

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5,6-二甲基氧杂蒽酮-4-乙酸 (DMXAA) 是一种有效的 I 型干扰素 (IFN) 诱导剂,在小鼠癌症模型中作为化疗药物进行了评估,并在人类癌症临床试验中证明具有良好的耐受性。尽管 DMXAA 具有多种生物学功能,但其作为疫苗佐剂的潜在应用尚未得到充分表征。在本报告中,我们证明 DMXAA 确实可以作为佐剂,因为它具有作为可溶性先天免疫激活剂的独特特性。使用 OVA 作为模型抗原,DMXAA 被证明可以改善抗原特异性免疫反应并诱导优先 Th2(2 型)反应。佐剂作用直接依赖于 IRF3 介导的 I 型干扰素的产生,而不是 IL-33。 DMXAA 还可以增强流感裂解疫苗的免疫原性,与单独裂解疫苗相比,小鼠对活流感病毒攻击的保护反应显着增强。我们建议 DMXAA 可用作佐剂,通过 IRF3 靶向特定的先天免疫信号通路,用于潜在的应用,包括需要高安全性的流感疫苗。
5,6-Dimethylxanthenone-4-acetic acid (DMXAA), a potent type I interferon (IFN) inducer, was evaluated as a chemotherapeutic agent in mouse cancer models and proved to be well tolerated in human cancer clinical trials. Despite its multiple biological functions, DMXAA has not been fully characterized for the potential application as a vaccine adjuvant. In this report, we show that DMXAA does act as an adjuvant due to its unique property as a soluble innate immune activator. Using OVA as a model antigen, DMXAA was demonstrated to improve on the antigen specific immune responses and induce a preferential Th2 (Type-2) response. The adjuvant effect was directly dependent on the IRF3-mediated production of type-I-interferon, but not IL-33. DMXAA could also enhance the immunogenicity of influenza split vaccine which led to significant increase in protective responses against live influenza virus challenge in mice compared to split vaccine alone. We propose that DMXAA can be used as an adjuvant that targets a specific innate immune signaling pathway via IRF3 for potential applications including vaccines against influenza which requires a high safety profile.
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