2016 Fiscal Year Annual Research Report
Analysis of signal path of reactions between model cells and quantified radicals
Project/Area Number |
26286072
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Research Institution | Meijo University |
Principal Investigator |
伊藤 昌文 名城大学, 理工学部, 教授 (10232472)
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Co-Investigator(Kenkyū-buntansha) |
竹田 圭吾 名古屋大学, 工学(系)研究科(研究院), 助教 (00377863)
太田 貴之 名城大学, 理工学部, 准教授 (10379612)
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Project Period (FY) |
2014-04-01 – 2017-03-31
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Keywords | 低温プラズマ / プラズマ理工学 / 農学応用 / 薬学応用 / 酸素ラジカル / 酸化窒素ラジカル / 酸素原子 / 一酸化窒素 |
Outline of Annual Research Achievements |
本研究では、リン酸緩衝生理食塩水(PBS)と脱イオン蒸留水(DDW)に対して定量化された酸素ラジカルを照射し、各溶液に生成された過酸化水素、次亜塩素酸、亜硝酸・硝酸イオン濃度などを定量し、液中での反応メカニズムを解明した。その結果、酸素ラジカルにより生成されたOHラジカルがPBS中の塩素イオンと反応し、次亜塩素酸を生成されることが判明した。1分間の酸素ラジカル照射で生成された次亜塩素酸により大腸菌は滅菌されるが、酵母は1桁程度の不活性化にとどまり次亜塩素酸に対する耐性が高いことが分かった。さらに30秒程度(酸素原子のドーズ量1×1017cm-3)の短時間照射の場合、酵母は殺菌ではなく20%程度増殖が促進されることが分かった。また、酸化窒素ラジカルを選択的に照射した実験ではNOのドーズ量が1×1019㎝-3の時20%程度の増殖促進が見られ、酸素ラジカル照射とは異なりPBS溶液中だけでなくDDW中でも同様な増殖促進が見られることが分かった。これらの結果から増殖促進には次亜塩素酸ではなく他の活性種が寄与している可能性が明らかとなった。さらに培養細胞である胎児マウスの線維芽細胞に対しても20%以上の増殖促進が見られることが判明し、皮膚細胞の増殖時間を短縮できる可能性を得ることに成功した。また、酸素ラジカル照射した培養液をメラノーマ細胞に作用させ不活性化されるシグナルパスを検証した結果、酸化ストレスによりミトコンドリアの膜電位が下がり、カスパーゼ9と3が活性化されることでアポトーシスが誘導され不活性化されているということが明らかとなった。
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Research Progress Status |
28年度が最終年度であるため、記入しない。
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Strategy for Future Research Activity |
28年度が最終年度であるため、記入しない。
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Causes of Carryover |
28年度が最終年度であるため、記入しない。
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Expenditure Plan for Carryover Budget |
28年度が最終年度であるため、記入しない。
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[Journal Article] How plasma induced oxidation, oxygenation, and de-oxygenation influences viability of skin cells2016
Author(s)
J.-S. Oh, X. Strudwick, R. D. Short, K. Ogawa, A. Hatta, H. Furuta, N. Gaur, S.-H. Hong, A. J. Cowin, H. Fukuhara, K. Inoue, M. Ito, C. Charles, R. W. Boswell, J. W. Bradley, D. B. Graves and E. J. Szili
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Journal Title
Applied Physics Letters
Volume: 109
Pages: 203701 1-5
DOI
Peer Reviewed / Int'l Joint Research
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[Presentation] Inactivation Mechanism of E. coli in Liquids Using Oxygen Radical Source2017
Author(s)
T. Kobayashi, J. Oh, H. Hashizume, T. Ohta, K. Ishikawa, M. Hori, M. Ito
Organizer
Taiwan- Japan Joint Workshop of 5th International Workshop for Nano-Carbon Workshop (IWNC) and 7th International Workshop for Plasma-bio Science and Technology (IWPBST)
Place of Presentation
Nagoya Dome-Mae Campus, Meijo University, Nagoya
Year and Date
2017-03-06 – 2017-03-07
Int'l Joint Research
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[Presentation] Measurement of reactive oxygen/nitrogen species in plasma-treated water2017
Author(s)
K. Yamamasu, K. Yamashita, T. Ohta, M. Ito, M. Hori
Organizer
Taiwan- Japan Joint Workshop of 5th International Workshop for Nano-Carbon Workshop (IWNC) and 7th International Workshop for Plasma-bio Science and Technology (IWPBST)
Place of Presentation
Nagoya Dome-Mae Campus, Meijo University, Nagoya
Year and Date
2017-03-06 – 2017-03-07
Int'l Joint Research
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[Presentation] Dependence of mold spores on oxidative stress through oxygen atoms2017
Author(s)
Y. Tanaka, H. Hashizume, J. Oh, K. Ishikawa, T. Ohta, M. Hori, and M. Ito
Organizer
9th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials/10th International Conference on Plasma-Nano Technology & Science
Place of Presentation
Chubu University, Kasugai, Aichi
Year and Date
2017-03-01 – 2017-03-05
Int'l Joint Research
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[Presentation] Interaction of Plasma with Cells for Agriculture and Biomedical Applications2017
Author(s)
M. Hori, M. Sekine, K. Ishikawa, H. Kondo, K. Takeda, H. Hashizume, H. Tanaka, F. Kikkawa, M. Mizuno and M. Ito
Organizer
3rd International Workshop on Advanced Plasma Technology and Applications
Place of Presentation
Nong Lam University, Hochiminh, Vietnam
Year and Date
2017-01-11 – 2017-01-14
Int'l Joint Research / Invited
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[Presentation] Bioscience and applications using plasmas2016
Author(s)
M. Ito
Organizer
Taiwan-Japan Joint Workshop of 4th International Work shop for Nano-Carbon and Workshop and 6th International Workshop for Plasma-bio Science and Technology
Place of Presentation
Chung-Yuan Christian University and National Taiwan University of Science & Technology, Taiwan
Year and Date
2016-11-03 – 2016-11-06
Int'l Joint Research
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[Presentation] Oxygen radical reactions in liquid phase for inactivating microorganisms2016
Author(s)
T. Kobayashi, J.-S. Oh, H. Hashizume, T. Ohta, K. Ishikawa, M. Hori, M. Ito
Organizer
Taiwan-Japan Joint Workshop of 4th International Work shop for Nano-Carbon and Workshop and 6th International Workshop for Plasma-bio Science and Technology
Place of Presentation
Chung-Yuan Christian University and National Taiwan University of Science & Technology, Taiwan
Year and Date
2016-11-03 – 2016-11-06
Int'l Joint Research
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[Presentation] Proliferative effects of nitric oxide irradiation on budding yeast cells2016
Author(s)
M. Okachi, J.-S. Oh, H. Hashizume, M. Hori, M. Ito
Organizer
Taiwan-Japan Joint Workshop of 4th International Work shop for Nano-Carbon and Workshop and 6th International Workshop for Plasma-bio Science and Technology
Place of Presentation
Chung-Yuan Christian University and National Taiwan University of Science & Technology, Taiwan
Year and Date
2016-11-03 – 2016-11-06
Int'l Joint Research
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[Presentation] Apoptosis pass of melanoma cells in medium irradiated by oxygen radicals2016
Author(s)
T. Koizumi, T. Murata, M. Hori, M. Ito
Organizer
Taiwan-Japan Joint Workshop of 4th International Work shop for Nano-Carbon and Workshop and 6th International Workshop for Plasma-bio Science and Technology
Place of Presentation
Chung-Yuan Christian University and National Taiwan University of Science & Technology, Taiwan
Year and Date
2016-11-03 – 2016-11-06
Int'l Joint Research
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[Presentation] Cell response of fungi spores to oxygen radical irradiation2016
Author(s)
Y. Tanaka, H. Hashizume, J.-S. Oh, T. Ohta, M. Hori, M. Ito
Organizer
Taiwan-Japan Joint Workshop of 4th International Work shop for Nano-Carbon and Workshop and 6th International Workshop for Plasma-bio Science and Technology
Place of Presentation
Chung-Yuan Christian University and National Taiwan University of Science & Technology, Taiwan
Year and Date
2016-11-03 – 2016-11-06
Int'l Joint Research
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[Presentation] Dynamic behavior of HeLa Cells in plasma-activated medium2016
Author(s)
R. Furuta, H. Hashizume, K. Ishikawa, H. Tanaka, K. Takeda, T. Ohta, H. Kondo, M. Ito, M. Sekine, M. Hori
Organizer
6th International Conference on Plasma Medicine
Place of Presentation
Bratislava, Slovakia
Year and Date
2016-09-04 – 2016-09-09
Int'l Joint Research
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[Presentation] Molecular Vibrational Imaging of Plasma-Induced Biological Samples2016
Author(s)
R. Furuta, H. Hashizume, K. Ishikawa, H. Tanaka, K. Takeda, T. Ohta, H. Kondo, M. Ito, M. Sekine, M. Hori
Organizer
7th International Workshop on Plasma Spectroscopy
Place of Presentation
Inuyama, Aichi
Year and Date
2016-06-26 – 2016-06-29
Int'l Joint Research
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