| Project/Area Number |
20310130
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Living organism molecular science
|
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
NAGASAWA Kazuo 東京農工大学, 大学院・工学研究院, 教授 (10247223)
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| Co-Investigator(Kenkyū-buntansha) |
YAMASHITA Mari 東北大学, 大学院・農学研究科, 教授 (50192430)
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| Project Period (FY) |
2008 – 2010
|
| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2010: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2009: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2008: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
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| Keywords | サキシトキシン / Naチャネル / 阻害剤 / 全合成 / グアニジン / ナトリウムチャネル / 構造活性相関 / サブタイプ選択性 / 1,3-双極子環化反応 |
|---|
| Research Abstract |
Voltage-gated sodium channels(NaVCh) are transmembrane proteins that contribute to the control of membrane excitability and the propagation of action potentials along axons. To date, nine kinds of subtyps for NaVCh were identified, and subtype selective small molecules are considered to be good candidate for NaVCh related disease. In this context, development of NaVCh-subtype selective ligand with saxitoxin(STX), a shellfish toxin, was examined based on the SAR studies of STX. In this project, general synthetic method for STX was developed, and varieties of STX derivatives were synthesized. Skeletal analog of STX that posses fused-type ring system, FD-STX, was also developed. Among the compounds synthesized, FD-dcSTX shows very unique inhibitory manner, i. e., it inhibits Nav1. 5(tetrodotoxin-resistant subtype) irreversibly.
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