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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/6462


    Title: Inhibition of epstein-barr virus reactivation in nasopharyngeal carcinoma cells by dietary sulforaphane
    Authors: Wu, CC;Chuang, SY;Lin, CY;Chen, YJ;Tsai, WH;Fang, CY;Huang, SY;Chuang, FY;Lin, SF;Chang, Y;Chen, JY
    Contributors: National Institute of Cancer Research;Division of Infectious Diseases
    Abstract: Epstein-Barr virus (EBV) has been associated with several human malignancies including nasopharyngeal carcinoma (NPC). Reactivation of latent EBV has been considered to contribute to the carcingenesis of NPC. Blocking the EBV lytic cycle has been shown effective in the treatment of EBV-associated diseases. We have searched for natural dietary compounds inhibiting EBV reactivation in NPC cells. Among them, sulforaphane (SFN) was found to be effective in the inhibition of EBV reactivation in latent EBV-positive NPC cells, NA and HA. SFN is a histone deacetylase (HDAC) inhibitor and has been recognized as an antioxidant and antitumor compound for chemoprevention. However, its antiviral effect is less well elucidated. In this study, after determination of the cytotocixity of SFN on various epithelial cells, we showed that SFN treatment inhibits EBV reactivation, rather than induction, by detection of EBV lytic gene expression in EBV-positive NPC cells. We also determined that the number of cells supporting the EBV lytic cycle is decreased using immunofluorescence and flow cytometric analysis. Moreover, we have found that this inhibitory effect decreases virus production. To elucidate the inhibitory mechanism of SFN on the EBV lytic cycle, luciferase reporter assays were carried out on the Zta and Rta promoters. The results show that SFN inhibits transactivation activity of the EBV immediate-early gene Rta but not Zta. Together, our results suggest that SFN has the capability to inhibit EBV lytic cycle and the potential to be taken as a dietary compound for prevention of EBV reactivation.
    Date: 2013-12
    Relation: Molecular Carcinogenesis. 2013 Dec;52(12):946-958.
    Link to: http://dx.doi.org/10.1002/mc.21926
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0899-1987&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000330107100003
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84888065745
    Appears in Collections:[林素芳] 期刊論文
    [陳振陽] 期刊論文
    [張堯] 期刊論文

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