國家衛生研究院 NHRI:Item 3990099045/11685
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/11685


    Title: Lon-ROS axis induces mtDNA release that activate cGAS-STING-IFN signaling and pack in exosome in tumor microenvironment
    Authors: Cheng, AN;Cheng, LC;Lee, AYL
    Contributors: National Institute of Cancer Research
    Abstract: Mitochondrial Lon functions in protein quality control and stress response pathways in mammals. Lon also has been shown to be overexpressed in various types of cancer including colon cancer, prostate cancer and oral cancer. Recently, we observed that Lon overexpression promotes ROS-dependent NF-κB and interferon (IFN) signaling in oral cancer, suggesting that Lon may induce a NF-κB-dependent inflammatory response. Herein, we used microarray expression analysis to demonstrate that Lon overexpression induces the interferon-stimulated genes, such as ISG15, IRF7 and STAT1 in a ROS-dependent manner in OSCC. We further found that mitochondrial DNA is released into cytosol in the Lon-overexpressing oral cancer cells and Lon-ROS axis induced the cGAS-STING pathway, then the mtDNA transfers to extracellular space by exosomes. In addition, we observed that Lon overexpression induces the ROS-dependent expression of indoleamine 2,3 dioxygenase (IDO) in OSCC, which is involved in mtDNA-STING activation tumor tolerogenic response. Taken together, these results suggest that inflammation induced by Lon overexpression may have an immunosuppression effect on tumor microenvironment.
    Date: 2018-12
    Relation: Cancer Science. 2018 Dec;109(Suppl. 2):1227.
    Link to: https://doi.org/10.1111/cas.13904
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1347-9032&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000453773606038
    Appears in Collections:[Alan Yueh-Luen Lee] Conference Papers/Meeting Abstract

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