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结直肠癌细胞中 STING 信号的失调抑制了 DNA 损伤反应,并与肿瘤发生相关。

Deregulation of STING Signaling in Colorectal Carcinoma Constrains DNA Damage Responses and Correlates With Tumorigenesis.

机构信息

Department of Cell Biology and the Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA.

Department of Cell Biology and the Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA.

出版信息

Cell Rep. 2016 Jan 12;14(2):282-97. doi: 10.1016/j.celrep.2015.12.029. Epub 2015 Dec 31.

Abstract

Stimulator of interferon genes (STING) has been shown to be critical for controlling antiviral responses as well as anti-tumor adaptive immunity, but little is known regarding its regulation in human tumors. Here, we report that STING signaling is recurrently suppressed in a wide variety of cancers, including colorectal carcinoma. Loss of STING signaling impeded DNA damage responses accountable for generating key cytokines that facilitate tissue repair and anti-tumor T cell priming, such as type I interferons (IFNs). Correspondingly, defective STING function was also highly predictive of effectual DNA-virus-mediated oncolytic activity. Thus, impaired STING responses may enable damaged cells to evade host immunosurveillance processes, although they provide a critical prognostic measurement that could help predict the outcome of effective oncoviral therapy.

摘要

干扰素基因刺激物 (STING) 已被证明对于控制抗病毒反应以及抗肿瘤适应性免疫至关重要,但关于其在人类肿瘤中的调节知之甚少。在这里,我们报告说,STING 信号在多种癌症中经常受到抑制,包括结直肠癌。STING 信号的丢失会阻碍 DNA 损伤反应,从而产生关键细胞因子,促进组织修复和抗肿瘤 T 细胞启动,如 I 型干扰素 (IFN)。相应地,有缺陷的 STING 功能也高度预测有效的 DNA 病毒介导的溶瘤活性。因此,受损的 STING 反应可能使受损细胞逃避宿主免疫监视过程,尽管它们提供了一个关键的预后测量,可以帮助预测有效的溶瘤病毒治疗的结果。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8fa/4845097/2baba7a995dd/nihms745133f1.jpg

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