| Project/Area Number |
22890103
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Circulatory organs internal medicine
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| Research Institution | Osaka University |
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Principal Investigator |
TSUKAMOTO Osamu 大阪大学, 医学系・研究科, 特任研究員 (80589151)
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| Project Period (FY) |
2010 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥3,068,000 (Direct Cost: ¥2,360,000、Indirect Cost: ¥708,000)
Fiscal Year 2011: ¥1,469,000 (Direct Cost: ¥1,130,000、Indirect Cost: ¥339,000)
Fiscal Year 2010: ¥1,599,000 (Direct Cost: ¥1,230,000、Indirect Cost: ¥369,000)
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| Keywords | c-myc / 転写複合体 / 心筋細胞特異的遺伝子発現制御 / クロスリンク反応 |
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| Research Abstract |
We found that the expression of one gene is down-regulated in cardiomyocytes while up-regulated in HUVEC or smooth muscle cells by c-myc. To clarify this cardiomyocyte-specific transcriptional mechanism by c-myc, we developed the nuclear extraction method that can obtain structurally-intact transcription complexes binding with high-affinity to their specific DNA sequences. Next, we narrowed the range of putative binding site of c-myc transcription complexes in promoter region of the gene by using both comparative genomics approach and transactivation assay. We performed DNA affinity chromatography using oligonucleotides containing the binding site of c-myc transcription complex as bait and nuclear extracts from cardiomyocytes or HUVEC. Using a high-sensitive LC-MS/ MS technology, we identified cardiomyocyte-specific components in c-myc transcription complexes.
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