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    To determine the effect of JAK kinase inhibitor AG490 on proliferation and apoptosis of nasopharyngeal carcinoma cell line C666-1 and explore the inhibitory effect of AG490 on STAT3 signal transduction pathway. An experimental study. Xi'an Ninth Hospital, Xi'an, China, from May 2015 to December 2016. AG490 was applied to C666-1 cells. Cell proliferation was detected by MTTassay. Cell cycle and apoptosis were detected by flow cytometry. The expression of STAT3 and p-STAT3 protein was detected by immobilized Western blot. AG490 could effectively inhibit proliferation of C666-1 cellsin vitro, and the inhibitory effect was characterized by time and concentration dependence. AG490 induced apoptosis of nasopharyngeal carcinoma cells, and apoptosis rate increased with prolongation of the time. AG490 could inhibit expression of STAT3 and p-STAT3 protein in C666-1 cells. AG490 can down-regulate expression of STAT3 and p-STAT3 protein in C666-1 cells, inhibit proliferation of nasopharyngeal carcinoma cells and promote apoptosis of nasopharyngeal carcinoma cells.


    Kai Li, Han Bao, Panying Zhang, Li Chen. Inhibitory Effect of AG490 on STAT3 Signal Transduction Pathway in Nasopharyngeal Carcinoma Cells. Journal of the College of Physicians and Surgeons--Pakistan : JCPSP. 2017 Nov;27(11):699-702

    PMID: 29132481

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