Analysis of neoplastic cell-specific fatal effects with reactive oxygen species abnormality derived from compound from plant species, piperlongumine
Project/Area Number |
15K00537
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Risk sciences of radiation and chemicals
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Research Institution | Kyoto University |
Principal Investigator |
Tano Keizo 京都大学, 複合原子力科学研究所, 准教授 (00183468)
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Co-Investigator(Kenkyū-buntansha) |
増永 慎一郎 京都大学, 複合原子力科学研究所, 教授 (80238914)
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Research Collaborator |
NAGASAWA Hideko
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Project Period (FY) |
2015-04-01 – 2019-03-31
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Project Status |
Completed (Fiscal Year 2018)
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Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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Keywords | DNA損傷修復 / 細胞内微細環境 / 活性酸素種 |
Outline of Final Research Achievements |
We assessed genotoxic potentials of Piperlongumine (PL) and Tirapazamine (TPZ) by utilizing DT40 cell lines. Our result showed that PL sensitized the cells deficient in homologous recombination related genes. The increase in frequency of the chromosome breaks and the accumulation of the Rad51 protein to chromatin were observed. It indicates that PL is a clastogenic and cytotoxic chemical that induces DSBs. TPZ is converted to a radical intermediate in hypoxia and this intermediate interacts with intracellular macromolecules including DNA. tdp1, tdp2, parp1, and aptx1 cells displayed hyper-sensitivity to TPZ only in hypoxic conditions. These suggest that the accumulations of topo I or topo II-trapped DNA complex and abortive ligation products with 3'-AMP are the potential cause of TPZ-induced killing of hypoxic cells. We conclude that TPZ induces oxidative DNA damage both in normoxia and hypoxia, and introduces abortive topo-DNA complexes and unligatable DNA ends selectively in hypoxia.
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Academic Significance and Societal Importance of the Research Achievements |
腫瘍細胞特異的な致死効果を持つピペロングミンの解析結果は、正常細胞への影響を最小限に抑える新規抗がん剤の開発に繋がることが期待される。また、腫瘍細胞特有の微細環境(低グルコースや低酸素)に着目し、その環境下でのみ細胞致死効果が得られる薬剤の探索も同様の意義を持つと考える。低酸素下で特異的な致死効果をもたらすチラパザミンが、細胞内活性酸素種のアンバランスによりDNA損傷を誘発するとの結果は、腫瘍細胞内微細環境を利用した新規抗がん剤のスクリーニングにヒントを与えるものである。
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Report
(5 results)
Research Products
(20 results)
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[Journal Article] Selective cytotoxicity of the anti-diabetic drug, metformin, in glucose-deprived chicken DT40 cells2017
Author(s)
Kadoda K, Moriwaki T, Tsuda M, Sasanuma H, Ishiai M, Takata M, Ide H, Masunaga S, Takeda S and Tano K
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Journal Title
PLOS ONE
Volume: 12
Issue: 9
Pages: e0185141-e0185141
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Effect of Tirapazamine, Metformin or Mild Hyperthermia on Recovery from Radiation-Induced Damage in Pimonidazole-Unlabeled Quiescent Tumor Cells2017
Author(s)
Masunaga S, Tano K, Sanada Y, Sakurai Y, Tanaka H, Suzuki M, Kondo N, Watanabe T, Takata T, Maruhashi A and Ono K
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Journal Title
World J. Oncol.
Volume: 8
Issue: 5
Pages: 137-146
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Effect of oxygen pressure during incubation with a 10B-carrier on 10B uptake capacity of cultured p53 wild-type and mutated tumor cells: dependency on p53 status of tumor cells and types of 10B-carriers2016
Author(s)
Masunaga S, Tatebe H, Nishimura Y, Tano K, Sanada Y, Moriwaki T, Sakurai Y, Tanaka H, Suzuki M, Kondo N, Maruhashi A and Ono K
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Journal Title
International Journal of Radiation Biology
Volume: 92
Issue: 4
Pages: 187-194
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] Anti-diabetic biguanide drugs, metformin and phenformin have genotoxicity upon glucose deprivation in chicken DT40 cells2016
Author(s)
Kadoda K, Moriwaki T, Fujiike H, Tsuda M, Sasanuma H, Takata M, Takeda S, Masunaga S, Tano K
Organizer
The 10th 3R Symposium
Place of Presentation
Hotel Ichihata, Matsue, Japan
Year and Date
2016-11-13
Related Report
Int'l Joint Research
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