IFNβ Is a Potent Adjuvant for Cancer Vaccination Strategies.

IFNβ Is a Potent Adjuvant for Cancer Vaccination Strategies.
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DOI:
10.3389/fimmu.2021.735133
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发表时间:
2021
影响因子:
7.3
通讯作者:
Waithman J
Waithman J
中科院分区:
医学2区
文献类型:
--
作者:
Audsley KM;Wagner T;Ta C;Newnes HV;Buzzai AC;Barnes SA;Wylie B;Armitage J;Kaisho T;Bosco A;McDonnell A;Cruickshank M;Fear VS;Foley B;Waithman J

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癌症疫苗接种可促进抗肿瘤 T 细胞免疫的产生,并且可以通过包含 I 型干扰素 (IFN) 等有效的免疫佐剂来增强。虽然 I 型干扰素已被证明可以促进 T 细胞的交叉启动,但各个亚型的作用仍不清楚。在这里,我们系统地比较了不同的 I 型干扰素亚型在临床前小鼠模型中增强 T 细胞对全细胞疫苗接种策略的反应的能力。我们发现,与测试的其他 I 型 IFN 亚型相比,疫苗接种与 IFNβ 组合可诱导肿瘤特异性 CD8+ T 细胞显着更大的扩增。最佳扩增取决于 XCR1+ 树突状细胞、CD4+ T 细胞和 CD40/CD40L 信号传导的存在。治疗上,与不接种 IFN 疫苗相比,接种 IFNβ 疫苗可延缓肿瘤进展。当与抗 PD-L1 检查点阻断疗法 (CPB) 联合接种疫苗时,加入 IFNβ 与更多小鼠经历完全消退和总体生存率增加的趋势相关。这项工作证明了 IFNβ 的强大佐剂活性,突显了其单独和与 CPB 组合增强癌症疫苗接种策略的潜力。
Cancer vaccination drives the generation of anti-tumor T cell immunity and can be enhanced by the inclusion of effective immune adjuvants such as type I interferons (IFNs). Whilst type I IFNs have been shown to promote cross-priming of T cells, the role of individual subtypes remains unclear. Here we systematically compared the capacity of distinct type I IFN subtypes to enhance T cell responses to a whole-cell vaccination strategy in a pre-clinical murine model. We show that vaccination in combination with IFNβ induces significantly greater expansion of tumor-specific CD8+ T cells than the other type I IFN subtypes tested. Optimal expansion was dependent on the presence of XCR1+ dendritic cells, CD4+ T cells, and CD40/CD40L signaling. Therapeutically, vaccination with IFNβ delayed tumor progression when compared to vaccination without IFN. When vaccinated in combination with anti-PD-L1 checkpoint blockade therapy (CPB), the inclusion of IFNβ associated with more mice experiencing complete regression and a trend in increased overall survival. This work demonstrates the potent adjuvant activity of IFNβ, highlighting its potential to enhance cancer vaccination strategies alone and in combination with CPB.
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