| Project/Area Number |
10557235
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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 | 展開研究 |
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| Research Field |
Environmental pharmacy
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| Research Institution | Chiba University |
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Principal Investigator |
YAMAZAKI Mami Chiba University, Faculty of Pharm.Sci., Associate professor, 薬学部, 助教授 (70222370)
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| Co-Investigator(Kenkyū-buntansha) |
TANAKA Yoshikazu Suntory Ltd., Institute for Fundamental Research, Chief researcer, 主任研究員
SAITO Kazuki Chiba University, Faculty of Pharm.Sci., Professor, 薬学部, 教授 (00146705)
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| Project Period (FY) |
1998 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥7,300,000 (Direct Cost: ¥7,300,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1998: ¥3,900,000 (Direct Cost: ¥3,900,000)
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| Keywords | Transgenic plant / Anthocyanin / Antioxidant / Medicinal plant / Glucosyltransferase / Myc homologue / Myb homologue / WD protein / MYC / MYB / ポリフェノール / フラボノール |
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| Research Abstract |
Polyphenol compounds such as flavonoids, athocyanins and catecins act as strong antioxidants and prevent deseases occored by active oxygen and or other oxidants. These antioxidant polyphenols are produced in plant against environmental stresses and they have functions to reduce the oxidative stresses in plant cells. Genetically modified plants in which producibility and stability of polyphenol compounds increased are supposed to be more resistant against oxidants and oxydative stresses and can survive in arear of air pollution. On the other hand, taking high-antioxidant plants as food and medicinal resources might prevent human deseases that are induced by oxidative stresses and environmental oxidants. A group of anthocyanins are commonly produced in many plant species, and stabilized by glucosylation in their molecules in plant cells. Furthermore, anthocyanin production is coordinately regulated by transcriptional factors such as Myc and Myb homologue proteins. In this project, (1)the modification of stability and solubility of anthocyanins with engineered recombinant proteins of plant glucosyltransferases and(2)the modification of anthocyanin producibility in transgenic plant introduced Myc or Myb homologue proteins were investigated. Using several clones of glucosyltransferases from different plant species, substrate specificities were investigated. In transgenic plants introduced Myc and Myb omologues, productions of anthocyanin were increased. The details of transactivational functions of these factors were studied in vitro by using one/two hybrid systems in yeast cells.
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