2015 Fiscal Year Final Research Report
Investigation of new anti-cancer agents with selective anti-proliferative activities
| Project/Area Number |
25460136
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Natural medicines
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
LI Wei 東邦大学, 薬学部, 准教授 (90328633)
KANNO Yuichiro 東邦大学, 薬学部, 講師 (40453849)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | Saururus chinensis / Euphorbia fischeriana / Trichosanthes kirilowii / Mammosphere formation / Cancer stem cells |
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| Outline of Final Research Achievements |
A library consisting of 200 kinds of methanolic extracts from medicinal plants, was screened cancer stem cell inhibitory activity. Extracts of Saururus chinensis, Trichosanthes kirilowii and Euphorbia fischeriana were bioactive. The methanol extract of S. chinensis was fractionated by a Bioassay Guided Fractionation method to give 10 kinds of tetrahydrofuran lignan derivatives, including two novel compounds, as well as three kinds of 8, 4'-oxyneolignan derivatives and three other lignan derivatives. Two tetrahydrofuran-type lignans with characteristic poly-oxygenated functional groups on the aromatic ring, namely, saurucinol I and rel-(7R, 8S, 7'S, 8'S)-4',5'-methylenedioxy- 3,4,5,3'-tetramethoxy-7,7'-epoxylignan, showed the most potent activity. Saurucinol I showed the inhibitory effect of mammosphere formation, and inhibited the CD44+/24- expression level which is an indicator of human breast cancer stem cells.
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| Free Research Field |
医歯薬学
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