DNA damage induced by near ultraviolet (UVA) and signal transduction
Project/Area Number |
23510063
|
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/Chemicals
|
Research Institution | Okayama University |
Principal Investigator |
NEGISHI Tomoe 岡山大学, 医歯(薬)学総合研究科, 准教授 (80116491)
|
Co-Investigator(Kenkyū-buntansha) |
IBUKI Yuko 静岡県立大学, 食品栄養科学部, 教授 (30236781)
|
Research Collaborator |
FANG Xing
TOYOOKA Tatsushi
|
Project Period (FY) |
2011-04-28 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
|
Keywords | 近紫外光 / 紫外線 / DNA傷害 / 活性酸素種 / ヒストンリン酸化 / ショウジョウバエ / DNA傷害修復 / UVA / 体細胞突然変異 / DNA二本鎖切断 / 酸化傷害 / 尿酸 / ピリミジン二量体 / 長波長紫外線 / 突然変異 / DNA損傷 / 染色体組換え / 細胞毒性 / シグナル伝達 |
Outline of Final Research Achievements |
We have investigated the involvement of UVA in mutations and DNA damage in somatic cells using Drosophila melanogaster larvae. 365-nm-LED (a high-dose-rate UVA source) was mutagenic in mei-41 than in mei-9. The mei-41 gene was shown to be an orthologue of the human ATR gene, which is involved in the repair of DSBs through phosphorylation of histone H2Ax. LED-UVA was mutagenic in the urate-null strain at doses that were non-mutagenic in the urate-positive strain. We also observed that reactive oxygen species were produced in larvae by LED-UVA irradiation. At higher doses of LED-UVA, levels of phosphorylated H2AvD (γ-H2AvD) increased significantly in the urate-null strain but not in wild-type. It was reported that ATR functions on DSB repair in D. melanogaster. Taken together, we propose a possible pathway for UVA-induced mutation, whereby DNA double-strand breaks resulting from oxidative stress might be responsible for UVA-induced mutation in somatic cells of D. melanogaster larvae.
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Report
(5 results)
Research Products
(28 results)
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[Journal Article] Somatic cell mutations caused by 365-nm LED-UVA due to DNA double-strand breaks through oxidative damage2014
Author(s)
Xing Fang, Naohiro Ide, Sho-ichi Higashi, Yasuhiro Kamei, Tatsushi Toyooka, Yuko Ibuki, Kazuaki Kawai, Hiroshi Kasai, Keinosuke Okamoto, Sakae Arimoto-Kobayashi, Tomoe Negishi
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Journal Title
Photochem. Photobiol. Sci.
Volume: 13
Issue: 9
Pages: 1338-1346
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Effects of Oral Administration of Non-genotoxic Hepato-hypertrophic Compounds on Metabolic Potency of Rat Liver2014
Author(s)
Fang, X., Nunoshiba, T., Yoshida, M., Nishikawa, A., Nemoto, K., Degawa, M., Arimoto, S., Okamoto, K., Takahashi, E., Negishi, T.
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Journal Title
Genes and Environment
Volume: 36
Issue: 1
Pages: 1-9
DOI
NAID
ISSN
1880-7046, 1880-7062
Related Report
Peer Reviewed / Open Access
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[Journal Article] Distinct pathways for repairing mutagenic lesions induced by methylating and ethylating agents2013
Author(s)
Taira, K., Kaneto, S., Nakano, K., Satanabe, S., Takahashi, E., Arimoto S., Okamoto, K., Schaaper, R.M., Negishi, K., Negishi, T.
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Journal Title
Mutagenesis
Volume: 28
Issue: 3
Pages: 341-350
DOI
Related Report
Peer Reviewed
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[Journal Article] Near ultraviolet radiation-mediated reaction between N-nitrosoproline and DNA: Isolation and identificatio of two new adducts, (R)- and (S)-8-(2-pyrrolidyl)-2’-deoxyguanosine2013
Author(s)
Aoyama, S., Sano, K., Asahi, C., Machida, M., Okamoto, K., Negishi, T, Kimura, S., Suzuki, T., Hatano, T., Arimoto-Kobayashi, S.
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Journal Title
J. Photochem. Photobilo. A: Chemistry
Volume: 276
Pages: 1-7
DOI
Related Report
Peer Reviewed
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[Journal Article] Novel Antimutagenic Proteins in The Edible Mushroom Agrocybe cylindracea2012
Author(s)
Yoneda, K., Shiozawa A., Kitahara, A., Takahashi, E., Arimoto, S., Okamoto K., Negishi, T.
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Journal Title
Genes & Environment
Volume: 34
Pages: 9-17
NAID
Related Report
Peer Reviewed
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[Journal Article] Effect of aflatoxin B1 on UDP-glucuronosyltransferase mRNA expression in HepG2 cells2012
Author(s)
Hanioka N., Nonaka, Y., Saito K., Negishi, T., Okamoto, K., Kataoka, H., Narimatsu, S.
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Journal Title
Chemosphere
Volume: 89
Issue: 5
Pages: 526-529
DOI
Related Report
Peer Reviewed
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[Journal Article] Exposure to Cigarette Smoke Increases Urate Level and Decreases Glutathione Level in Larval Drosophila melanogaster2011
Author(s)
Fujiwara, M., Hamatake, Y., Arimoto, S., Okamoto, K., Suzuki, T., Negishi, T.
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Journal Title
Genes & Environment
Volume: 33
Pages: 89-95
NAID
Related Report
Peer Reviewed
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