IL-10 blockade facilitates DNA vaccine-induced T cell responses and enhances clearance of persistent virus infection.

IL-10 blockade facilitates DNA vaccine-induced T cell responses and enhances clearance of persistent virus infection.
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IL-10阻断促进了DNA疫苗诱导的T细胞反应,并增强了持续性病毒感染的清除。

DOI:
10.1084/jem.20071948
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发表时间:
2008-03-17
影响因子:
15.3
通讯作者:
Oldstone, Michael B. A.
Oldstone, Michael B. A.
中科院分区:
医学1区
文献类型:
--
作者:
Brooks, David G.;Lee, Andrew M.;Elsaesser, Heidi;McGavern, Dorian B.;Oldstone, Michael B. A.

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治疗性疫苗接种是建立免疫控制和根除持续性病毒感染的潜在强大策略。大型且多功能的抗病毒 T 细胞反应与病毒持久性的控制有关;然而,由于目前尚不清楚的原因,目前恢复 T 细胞免疫和控制病毒感染的治疗性疫苗接种方法一直无效。在此,我们证实,免疫抑制因子白细胞介素 (IL)-10 的中和可刺激 T 细胞反应,并改善对已建立的持续性淋巴细胞脉络膜脑膜炎病毒 (LCMV) 感染的控制。重要的是,IL-10的阻断还使得原本无效的治疗性DNA疫苗能够进一步刺激抗病毒免疫,从而增加T细胞反应并增强对持续性LCMV复制的清除。因此,我们提出,当前的治疗性疫苗接种策略未能复活/维持 T 细胞反应的一个原因是它们不能缓解免疫抑制环境。因此,阻断关键抑制因子可以使无效的疫苗更有效地改善 T 细胞免疫,从而实现对持续病毒感染的免疫介导控制。
Therapeutic vaccination is a potentially powerful strategy to establish immune control and eradicate persistent viral infections. Large and multifunctional antiviral T cell responses are associated with control of viral persistence; however, for reasons that were mostly unclear, current therapeutic vaccination approaches to restore T cell immunity and control viral infection have been ineffective. Herein, we confirmed that neutralization of the immunosuppressive factor interleukin (IL)-10 stimulated T cell responses and improved control of established persistent lymphocytic choriomeningitis virus (LCMV) infection. Importantly, blockade of IL-10 also allowed an otherwise ineffective therapeutic DNA vaccine to further stimulate antiviral immunity, thereby increasing T cell responses and enhancing clearance of persistent LCMV replication. We therefore propose that a reason that current therapeutic vaccination strategies fail to resurrect/sustain T cell responses is because they do not alleviate the immunosuppressive environment. Consequently, blocking key suppressive factors could render ineffective vaccines more efficient at improving T cell immunity, and thereby allow immune-mediated control of persistent viral infection.
DNA免疫后,树突状细胞的抗原表现,编码主要的组织相容性复合物II类限制性病毒表位。
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