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학술저널
저자정보
Wei, Ling (Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute) Wang, Xing-Wu (Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute) Sun, Ju-Jie (Department of Pathology, Shandong Cancer Hospital and Institute) Lv, Li-Yan (Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute) Xie, Li (Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute) Song, Xian-Rang (Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute)
저널정보
아시아태평양암예방학회 Asian Pacific journal of cancer prevention : APJCP Asian Pacific journal of cancer prevention : APJCP 제16권 제3호
발행연도
2015.1
수록면
875 - 880 (6page)

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Mediator 19 (Med19) is a component of the mediator complex which is a coactivator for DNA-binding factors that activate transcription via RNA polymerase II. Accumulating evidence has shown that Med19 plays important roles in cancer cell proliferation and tumorigenesis. The involvement of Med19 in sensitivity to the chemotherapeutic agent cisplatin was here investigated. We employed RNA interference to reduce Med19 expression in human non-small cell lung cancer (NSCLC) cell lines and analyzed their phenotypic changes. The results showed that after Med19 siRNA transfection, expression of Med19 mRNA and protein was dramatically reduced (p<0.05). Meanwhile, impaired growth potential, arrested cell cycle at G0/G1 phase and enhanced sensitivity to cisplatin were exhibited. Apoptosis and caspase-3 activity were increased when cells were exposed to Med19 siRNA and/or cisplatin. The present findings suggest that Med19 facilitates tumorigenic properties of NSCLC cells and knockdown of Med19 may be a rational therapeutic tool for lung cancer cisplatin sensitization.

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