| Project/Area Number |
23659096
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
General anatomy (including Histology/Embryology)
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YASUNAGA Shin'ichiro 広島大学, 原爆放射線医科学研究所, 准教授 (50336111)
SHIRAI Manabu 独立行政法人国立循環器病研究センター, 分子生物部, 室長 (70294121)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 細胞分化 / 組織形成 / 心臓幹細胞 / 再生医学 / ポリコーム複合体 / Geminin |
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| Research Abstract |
In this study we further analyzed a molecular role for the Polycomb-rgoup (PcG) complex 1 including Rae28/Phc1 and attempted to identify cardiac stem cells focusing on the expression level of Geminin. PcG complex 1 regulates protein stability through the ubiquitin-proteasome system as well as transcription through the chromatin regulation. We here identified a novel PcG complex with Pcgf5 in the heart and Gemininhighcellular subpopulations in the heart. Since Gemininhighcells reside in the cardiac atrium, in which there previously shown was the presence of cardiac stem cells, these are presumed to be candidates for cardiac stem cells. On the other hand, expression of Geminin is high in S-phase cells, suggesting an intriguing possibility that Gemininhigh cells are proliferating cells in the adult heart.
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