| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Outline of Final Research Achievements |
[Objective] microRNAs have key roles in the onset, development and drug resistance of cancer. We identified miR-34b as a tumor suppressor-type microRNA with expression that is epigenetically suppressed in endometrial cancer. In this study, the antitumor effect of combined miR-34b and antitumor drugs on endometrial cancer was examined.
[Results] There was no change in cell viability after administration of miR-34b following application of cisplatin or adriamycin to HEC-108, HEC-1B and KLE cells. However, after treatment with paclitaxel, cell viability after administration of miR-34b decreased in all three cell lines. Tumor development occurred 14 days after transplantation of HEC-1B cells in nude mice. Drugs were administered on that day and thereafter. The tumor diameter significantly decreased in mice treated with paclitaxel + miR-34b compared with the results for other treatments (P<0.05). The GFP fluorescence signal also markedly decreased after treatment with paclitaxel + miR-34b.
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