| Project/Area Number |
15592092
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Surgical dentistry
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| Research Institution | Hokkaido University |
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Principal Investigator |
HIGASHINO Fumihiro Hokkaido Univ., Grad.School of Dent., Inst., 大学院・歯学研究科, 助手 (50301891)
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| Co-Investigator(Kenkyū-buntansha) |
SHINDOH Masanobu Hokkaido Univ., Grad.School of Dent., Asso.Prof., 大学院・歯学研究科, 助教授 (20162802)
TOTSUKA Yasunori Hokkaido Univ., Grad.School of Dent., Prof., 大学院・歯学研究科, 教授 (00109456)
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| Project Period (FY) |
2003 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2004: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2003: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | Ets family / E1AF / osteonontin / bone production / rergulation of gene expression / CBFA1 / ルシフェラーゼアッセイ |
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| Research Abstract |
Ets oncogene family plays an important role for basic biological events such as embryogenesis, differentiation, cell growth and apoptosis. Previously, we found that one of the ets family, E1AF, activates the expression of matrixmetalloproteases (MMPs), which is related to bone production. The objective of this research is to examine whether ets genes induce the differentiation of osteoblast.
We produced an E1AF expression vector and examined the activation of osteopontin gene expression by luciferase assay. The expression was activated by E1AF in dose-dependent manner.
Since E1AF protein failed to be detected in the cells expressing E1AF stably, whereas the mRNA was expressed well, E1AF is regulated in post-transcriptional level. We found that E1AF is degraded by ubiquitin-proteasome pathway.
We examined the effect of adenovirus E1A, which inhibits bone production, on the activation of gene expression mediated by E1AF. The data showed that E1A inhibited the transcription from the gene targeted by E1AF.
These findings indicate that E1AF has some relation with bone production.
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