| Project/Area Number |
24659363
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Gastroenterology
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| Research Institution | Kyoto University |
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Principal Investigator |
CHIBA Tsutomu 京都大学, 医学(系)研究科(研究院), 教授 (30188487)
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| Co-Investigator(Kenkyū-buntansha) |
SENO Hiroshi 京都大学, 医学研究科, 講師 (90335266)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 癌幹細胞 / 組織幹細胞 / Hes1 / Dckl1 / 大腸ポリープ / 癌幹細胞治療 / 大腸癌 / 分子標的治療 |
|---|
| Research Abstract |
We examined effects of targeting Hes1 and Dcamkl1, possible cancer stem cell markers, on colonic cancer cells. Hes1-specific siRNAs significantly reduced growth of human colonic cancer cells. In addition, we also examined the effect of Hes1-siRNA to ApcMin mice. Finally, we obtained Dckl1-positive cells from both normal intestine and polyps of ApcMin mice by FACS sorting, and found several transcripts specifically expressed in Dcamkl1-positive tumor cells. The siRNAs or inhibitors specific for the molecules exclusively expressed in Dcamkl1-positive tumor cells inhibited tumor cell growth without affecting normal epithelial cells. These data suggested possible anti-cancer strategy targeting cancer stem cells without affecting normal tissue stem cells.
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