STING-Dependent Cytosolic DNA Sensing Promotes Radiation-Induced Type I Interferon-Dependent Antitumor Immunity in Immunogenic Tumors.

STING-Dependent Cytosolic DNA Sensing Promotes Radiation-Induced Type I Interferon-Dependent Antitumor Immunity in Immunogenic Tumors.
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依赖于STING的胞质DNA感应促进了辐射诱导的I型干扰素依赖性抗肿瘤免疫。

DOI:
10.1016/j.immuni.2014.10.019
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发表时间:
2014-11-20
期刊:
影响因子:
32.4
通讯作者:
Weichselbaum, Ralph R.
Weichselbaum, Ralph R.
中科院分区:
医学1区
文献类型:
--
作者:
Deng, Liufu;Liang, Hua;Xu, Meng;Yang, Xuanming;Burnette, Byron;Arina, Ainhoa;Li, Xiao-Dong;Mauceri, Helena;Beckett, Michael;Darga, Thomas;Huang, Xiaona;Gajewski, Thomas F.;Chen, Zhijian J.;Fu, Yang-Xin;Weichselbaum, Ralph R.

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电离辐射介导的肿瘤消退依赖于I型干扰素(IFN)和适应性免疫应答,但几种途径控制I型IFN诱导。在这里,我们证明了衔接蛋白STING,而不是MyD 88,是需要I型IFN依赖性抗肿瘤效应的辐射。在树突状细胞(DC)中,响应于辐射的肿瘤细胞,需要STING来诱导IFN-β。胞质DNA传感器环GMP-AMP(cGAMP)合酶(cGAS)介导DC中辐射肿瘤细胞的传感。此外,STING是辐射诱导的适应性免疫应答所必需的,其依赖于DC上的I型IFN信号传导。外源性IFN-β处理挽救了cGAS或STING缺陷型DC的交叉致敏。因此,通过第二信使cGAMP施用激活STING增强了由辐射诱导的抗肿瘤免疫。因此,在免疫原性肿瘤中的辐射介导的抗肿瘤免疫需要功能性胞质DNA传感途径,并表明cGAMP治疗可能提供一种新的策略,以改善放射治疗。
Ionizing radiation-mediated tumor regression depends on type I interferon (IFN) and the adaptive immune response, but the several pathways control I IFN induction. Here, we demonstrate that adaptor protein STING, but not MyD88, is required for type I IFN-dependent antitumor effects of radiation. In dendritic cells (DCs), STING was required for IFN-β induction in response to irradiated-tumor cells. The cytosolic DNA sensor cyclic GMP-AMP (cGAMP) synthase (cGAS) mediated sensing of irradiated-tumor cells in DCs. Moreover, STING was essential for radiation-induced adaptive immune responses, which relied on type I IFN signaling on DCs. Exogenous IFN-β treatment rescued the cross-priming by cGAS or STING-deficient DCs. Accordingly, activation of STING by a second messenger cGAMP administration enhanced antitumor immunity induced by radiation. Thus radiation-mediated antitumor immunity in immunogenic tumors requires a functional cytosolic DNA-sensing pathway and suggests cGAMP treatment may provide a new strategy to improve radiotherapy.
DOI: 10.1158/0008-5472.can-10-2820
发表时间: 2011-04-01
期刊: Cancer research
影响因子: 11.2
作者:
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DOI: 10.1126/science.1244040
发表时间: 2013-09-20
期刊: Science (New York, N.Y.)
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发表时间: 2012-11-20
影响因子: 11.1
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发表时间: 2012-08
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