國家衛生研究院 NHRI:Item 3990099045/7698
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    题名: Leukemia inhibitory factor promotes nasopharyngeal carcinoma progression and radioresistance
    作者: Liu, SC;Tsang, NM;Chiang, WC;Chang, KP;Hsueh, C;Liang, Y;Juang, JL;Chow, KPN;Chang, YS
    贡献者: Institute of Molecular and Genomic Medicine
    摘要: Radioresistance of EBV-associated nasopharyngeal carcinoma (NPC) is associated with poor prognosis for patients with this form of cancer. Here, we found that NPC patients had increased serum levels of leukemia inhibitory factor (LIF) and that higher LIP levels correlated with local tumor recurrence. Furthermore, in vitro studies with NPC cells and in vivo xenograft mouse studies demonstrated that LIF critically contributes to NPC tumor growth and radioresistance. Using these model systems, we found that LIP treatment activated the mTORC1/p70S6K signaling pathway, enhanced tumor growth, inhibited DNA damage responses, and enhanced radioresistance. Treatment with either soluble LIF receptor (sLIFR), a LIP antagonist, or the mTOR inhibitor rapamycin reversed LIP-mediated effects, resulting in growth arrest and increased sensitivity to gamma irradiation. Immunohistochemical (IHC) analyses of human NPC biopsies revealed that LIF and LIFR were overexpressed in tumor cells and that LIP expression correlated with the presence of the activated p-p70S6K. Finally, we found that the EBV-encoded protein latent membrane protein 1 (LMP1) enhances LIP production. Together, our findings indicate that LIP promotes NPC tumorigenesis and suggest that serum LIP levels may predict local recurrence and radiosensitivity in NPC patients.
    日期: 2013-12-02
    關聯: Journal of Clinical Investigation. 2013 Dec 2;123(12):5269-5283.
    Link to: http://dx.doi.org/10.1172/jci63428ds1
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0021-9738&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000327826100031
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84890110205
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