Molecular Mechanism of Mitotic Catastrophe
Project/Area Number |
17390084
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
General medical chemistry
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Research Institution | NAGOYACITY UNIVERSITY |
Principal Investigator |
NAKANISHI Makoto Nagoya City University, Graduate School of Medical Sciences, Professor, 大学院医学研究科, 教授 (40217774)
|
Co-Investigator(Kenkyū-buntansha) |
MURAKMI Hiroshi Nagoya City University, Graduate School ot Medical Sciences, Associate Professor, 大学院医学研究科, 助教授 (80262020)
NIIDA Hiroyuki Nagoya City University, Graduate School of Medical Sciences, Assistant Professor, 大学院医学研究科, 助手 (20336671)
|
Project Period (FY) |
2005 – 2006
|
Project Status |
Completed (Fiscal Year 2006)
|
Budget Amount *help |
¥14,600,000 (Direct Cost: ¥14,600,000)
Fiscal Year 2006: ¥5,600,000 (Direct Cost: ¥5,600,000)
Fiscal Year 2005: ¥9,000,000 (Direct Cost: ¥9,000,000)
|
Keywords | cell cycle / checkpoint / Apoptosis |
Research Abstract |
Mitotic catastrophe has been first identified as a lethal phenotype with gross abnormalities of chromosome segregation during mitosis in some fission yeast mutant strains. Similar lethal phenotype was also observed in mammalian cells as a result from premature mitosis or failure to undergo complete mitosis. However, there is no broadly accepted definition of the term "mitotic catastrophe", presumably due to lack of the major processes dictating mitotic catastrophe in molecular and genetic terms. Mitotic catastrophe occurs as a result of uncoupling of the onset of mitosis from the completion of DNA replication, but how the ensuing lethality is regulated or what signals are involved is largely unknown. We demonstrate here the essential role of the ATM/ATR-Chk2-p53 pathway in the mitotic catastrophe observed in Chkl-deficient cells. Chk1 deficiency resulted in a premature onset of mitosis due to abnormal activation of cyclin B-Cdc2, and led to the activation of caspases 3 and 9 through cytoplasmic release of histone H1 and cytochrome c. Chkl-deficient cells were effectively rescued from lethality by the addition of caspase inhibitor. The Chkl deficiency resulted in foci formation of phosphorylated histone H2AX and the activation of Chk2, followed by an increase in the amount of p53 protein. Inhibition of ATM and ATR with caffeine also protected the lethality-prone Chkl-deficient cells. Chk2-deficient and p53-deficient cells were resistant to lethality from Chkl depletion. Our results therefore suggest that ATM/ATR-Chk2-p53 is required for mitotic catastrophe that eliminates cells escaping Chkl-dependent mitotic regulation. Loss of this function might be important in mammalian tumorigenesis.
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Report
(3 results)
Research Products
(23 results)
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[Journal Article] Biological Effects and Field Emission-Type X-Rays Generated by Nanotechnology.2007
Author(s)
Nakato, T., Namanishi, M., Kita, S., Okuyama.F., Shibamoto, Y., Otuka, T.
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Journal Title
Radiat. Res. 48
Pages: 153-161
Description
「研究成果報告書概要(和文)」より
Related Report
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[Journal Article] Biological Effects and Field Emission-Type X-Rays Generated by Nanotechnology.2007
Author(s)
Nakato, T., Namanishi, M., Kita, S., Okuyrama.F., Shibamoto, Y., Otuka, T.
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Journal Title
Radiat. Res. 48
Pages: 153-161
Related Report
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[Journal Article] Regulation of mitotic function of Chk1 through phosphorylation at novel sites by cyclin-dependent kinase 1 (Cdk1).2006
Author(s)
Shiromizu, T., Goto, H., Tomono, Y., Bartek, J., Totsukawa, G., Inoko, A., Nakanishi, M., Matsumura, F., Inagaki, M.
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Journal Title
Genes Cells. 11
Pages: 477-485
Description
「研究成果報告書概要(和文)」より
Related Report
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[Journal Article] Regulation of mitotic function of Chk1 through phosphorylation at novel sites by cyclin-dependent kinase 1(Cdk1).2006
Author(s)
Shiromizu, T., Goto, H., Tomono, Y., Bartek, J., Totsukawa, G., Inoko, A., Nakanishi, M., Matsumura, F., Inagaki, M.
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Journal Title
Genes Cells. 11
Pages: 477-485
Related Report
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[Journal Article] Depletion of Chk1 leads to premature activation of cdc2-cyclin B and mitotic catastrophy.2005
Author(s)
Niida, H., Tsuge, S., Katsuno, Y., Konishi, A., Takeda, N., Nakanishi, M.
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Journal Title
J. Biol. Chem. 280
Pages: 39246-39252
Description
「研究成果報告書概要(和文)」より
Related Report
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[Journal Article] A20 is a neeative regulator of interferon regulatory factor 3 signaling.2005
Author(s)
Saitoh, T., Yamamoto, M., Miyagi, M., Taira, K., Nakanishi, M., Fujita, T., Akira, S., Yamamoto, N., Yamaoka, S.
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Journal Title
J. Immunol. 174
Pages: 1507-1512
Description
「研究成果報告書概要(和文)」より
Related Report
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[Journal Article] NF-kappaB-activating kinase (NAK)-associated protein (NAP) 1 participates in Toll-like receptor (TLR)3/Toll-IL-1 homology domain-containing adapter molecule (TICAM)-1-mediated IRF3 activation.2005
Author(s)
Sasai, M., Oshiumi, H., Matsumoto, M., Inoue, N., Fujita, F., Nakanishi, M., Seya T.
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Journal Title
J. Immunol. 174
Pages: 27-30
Description
「研究成果報告書概要(和文)」より
Related Report
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[Journal Article] A20 is a negative regulator of interferon regulatory factor 3 signaling.2005
Author(s)
Saitoh, T., Yamamoto, M., Miyagi, M., Taira, K., Nakanishi, M.Fujita, T., Akira, S., Yamamoto, N., Yamaoka, S.
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Journal Title
J. Immunol. 174
Pages: 1507-1512
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Journal Article] NF-kappaB-activating kinase (NAK)-associated protein (NAP) 1 participates in Toll-like receptor (TLR)3/Toll-IL-1 homology domain-containing : adapter molecule (TICAM)-1-mediated IRF3 activation.2005
Author(s)
Sasai, M., Oshiumi, H., Matsumoto, M., Inoue, N., Fujita, F., Nakanishi, M., Seya T.
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Journal Title
J. Immunol. 174
Pages: 27-30
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Journal Article] Depletion of Chk1 leads to premature activation of cdc2-cyclin B and mitotic catastrophy.2005
Author(s)
Niida, H., Tsuge, S., Katsuno, Y., onishi, A., Takeda, N., Nakanishi, M.
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Journal Title
J.Biol.Chem. 280
Pages: 39246-39252
Related Report
-
-
[Journal Article] A20 is a negative regulator of interferon regulatory factor 3 signaling.2005
Author(s)
Saitoh, T., Yamamoto, M., Miyagi, M., Taira, K., Nakanishi, M., Fujita, T., Akira, S., Yamamoto, N., Yamaoka, S.
-
Journal Title
J.Immunol. 174
Pages: 1507-1512
Related Report
-
[Journal Article] NF-kappaB-activating kinase (NAK)-associated protein (NAP) 1 participates in Toll*like receptor (TLR)3/Toll-IL-1 homology domain-containing adapter molecule (TICAM)-1-mediated IRF activation.2005
Author(s)
Sasai, M., Oshiumi, H., Matsumoto, M., Inoue, N., Fujita, F., Nakanishi, M., Seya T.
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Journal Title
J.Immunol. 174
Pages: 27-30
Related Report