Exosomal PD-L1 contributes to immunosuppression and is associated with anti-PD-1 response.
Exosomal PD-L1 contributes to immunosuppression and is associated with anti-PD-1 response.
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外泌体 PD-L1 有助于免疫抑制并与抗 PD-1 反应相关
DOI:
10.1038/s41586-018-0392-8
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发表时间:
2018-08
期刊:
影响因子:
64.8
通讯作者:
Guo W
中科院分区:
文献类型:
--
作者:
Chen G;Huang AC;Zhang W;Zhang G;Wu M;Xu W;Yu Z;Yang J;Wang B;Sun H;Xia H;Man Q;Zhong W;Antelo LF;Wu B;Xiong X;Liu X;Guan L;Li T;Liu S;Yang R;Lu Y;Dong L;McGettigan S;Somasundaram R;Radhakrishnan R;Mills G;Lu Y;Kim J;Chen YH;Dong H;Zhao Y;Karakousis GC;Mitchell TC;Schuchter LM;Herlyn M;Wherry EJ;Xu X;Guo W
Tumour cells evade immune surveillance by upregulating the surface expression of programmed death-ligand 1 (PD-L1), which interacts with programmed death-1 (PD-1) receptor on T cells to elicit the immune checkpoint response,. Anti-PD-1 antibodies have shown remarkable promise in treating tumours, including metastatic melanoma, –. However, the patient response rate is low,. A better understanding of PD-L1-mediated immune evasion is needed to predict patient response and improve treatment efficacy. Here we report that metastatic melanomas release extracellular vesicles, mostly in the form of exosomes, that carry PD-L1 on their surface. Stimulation with interferon-γ (IFN-γ) increases the amount of PD-L1 on these vesicles, which suppresses the function of CD8 T cells and facilitates tumour growth. In patients with metastatic melanoma, the level of circulating exosomal PD-L1 positively correlates with that of IFN-γ, and varies during the course of anti-PD-1 therapy. The magnitudes of the increase in circulating exosomal PD-L1 during early stages of treatment, as an indicator of the adaptive response of the tumour cells to T cell reinvigoration, stratifies clinical responders from non-responders. Our study unveils a mechanism by which tumour cells systemically suppress the immune system, and provides a rationale for the application of exosomal PD-L1 as a predictor for anti-PD-1 therapy.
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DOI:
10.1158/1078-0432.ccr-17-2664
发表时间:
2018-02-15
期刊:
Clinical cancer research : an official journal of the American Association for Cancer Research
影响因子:
--
作者:
Theodoraki MN;Yerneni SS;Hoffmann TK;Gooding WE;Whiteside TL
通讯作者:
Whiteside TL
DOI:
10.4049/jimmunol.182.3.1469
发表时间:
2009-02-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Strauss L;Bergmann C;Whiteside TL
通讯作者:
Whiteside TL
DOI:
10.1038/nri3622
发表时间:
2014-03
期刊:
Nature reviews. Immunology
影响因子:
--
作者:
通讯作者:
--
影响因子:
50.3
作者:
Becker A;Thakur BK;Weiss JM;Kim HS;Peinado H;Lyden D
通讯作者:
Lyden D
影响因子:
5.7
作者:
Tibes, Raoul;Qiu, YiHua;Kornblau, Steven M.
通讯作者:
Kornblau, Steven M.