| Project/Area Number |
24659133
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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 medical chemistry
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| Research Institution | Kyoto University |
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Principal Investigator |
KATO Tomohisa 京都大学, 再生医科学研究所, 講師 (50301247)
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| Co-Investigator(Kenkyū-buntansha) |
TOGUCHIDA Junya 京都大学, 再生医科学研究所, 教授 (40273502)
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| Co-Investigator(Renkei-kenkyūsha) |
AOI Takashi 京都大学, iPS細胞研究所, 教授 (00546997)
TAKAHASHI Kazutoshi 京都大学, iPS細胞研究所, 講師 (80432326)
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| Project Period (FY) |
2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | 細胞初期化 / iPS 細胞 / シグナル伝達 / IKK / NF-κB |
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| Research Abstract |
We have investigated the role, if any, of IKK/NF-κB signaling axis in cellular reprogramming into iPS cells. We found that ectopic expr ession of Yamanaka 4 factors induced the IKKβ kinase activity depending on ATM. Moreover, disruption of Ikkβ gene reduced the reprogramming efficiency, whereas co-expr ession of IKKβ^(EE), a constitutive active form of IKKβ, with Yamanaka 4 factors promoted the efficiency. We found disruption of Ikkβ elevated the number of senescent cells during the reprogramming. Collectively, our results indicate that IKKβ potentiates cellular reprogramming by antagonizing the cellular senescence evoked by the ectopic expression of Yamanaka factors in anAT M-dependent manner.
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