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Japanese

Study on Potentiation of Nitrosourea-Cytotoxicity by DNA Repair Enzyme Inhibitors in Human Brain Tumor Cells Masahito Fukuchi 1 , Katsuyoshi Mineura 1 , Masayoshi Kowada 1 , Isamu Terashima 2 , Kohfuku Kohda 2 1Neurosurgical Service, Akita University Hospital 2Faculty of Pharmaceutical Science, Nagoya City University Keyword: human brain tumor cells , nitrosourea , DNA repair enzyme inhibitors pp.521-528
Published Date 1997/6/1
DOI https://doi.org/10.11477/mf.1406901119
  • Abstract
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Nitrosoureas are antitumor alkylating agents widely used in the chemotherapy of malignant brain tumors. However, the effectiveness of adjuvant nitrosourea chemotherapy has proved inadequate, failing to provide any significant prolongation of survival time. One of the reasons for the poor results is a drug resistance system in the form of the DNA repair enzyme O6-methylguanine-DNA methyltrans-ferase (MGMT). O6-alkylguanine derivatives are well known to be inhibitors of MGMT, and inactiva-tion of MGMT by these derivatives leads to in-creased tumor cell sensitivity to nitrosoureas.


Copyright © 1997, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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