Difference in the Types of Uterine Tumors between Heterozygous p53-deficient and Wild Type CBA Mice Treated with Ethinylestradiol after N-ethyl-N-nitrosourea Initiation
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概要
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To cast light on the mechanisms of rapid induction of endometrial stromal sarcomas in p53-deficient CBA mice [p53 (+/-) mice] treated with ethinylestradiol (EE) after a single injection of N-ethyl-N-nitrosurea (ENU), p53 (+/-) and CBA/JNCrj mice [CBA mice] were given diet containing 2.5 ppm EE for 26 and 50 weeks, respectively, after ENU-initiation, and the types of uterine tumors induced were compared. Endometrial adenocarcinomas and stromal sarcomas were induced in 7% and 73%, respectively, of the p53 (+/-) mice given ENU followed by EE. In contrast, the CBA mice demonstrated incidences of adenocarcinomas and sarcomas of 100% and 25%, respectively. These results suggest that the uterine stromal cell is a major target cell of ENU-initiation in p53 (+/-) mice with a role for the tumor suppressor in governing its response to genetic damage due to ENU. The uterine epithelial cell is another target cell but subsequent long-term EE treatment appears prerequisite for the development of adenocarcinomas. While endometrial stromal sarcomas in p53 (+/-) mice were negative for p21 immunohistochemistry, their counterparts in CBA mice were focally positive at a high incidence, suggesting differences in the processes leading to the tumor development in the two cases.
- 日本毒性病理学会の論文
- 2002-12-25
著者
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Imai Toshio
Division of Pathology, National Institute of Health Sciences
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Hirose Masao
Division of Pathology, National Institute of Health Sciences
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Mori H
Division Of Pathology National Institute Of Health Sciences
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Mitsumori Kunitoshi
東京大学医科学研究所 癌細胞シグナル分野
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UEDA Makoto
Division of Pathology, National Institute of Health Sciences
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ONODERA Hiroshi
Division of Pathology, National Institute of Health Sciences
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TAKAGI Hisayoshi
Division of Pathology, National Institute of Health Sciences
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TAMURA Toru
Division of Pathology, National Institute of Health Sciences
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MITSUMORI Kunitoshi
Division of Pathology, National Institute of Health Sciences
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Takizawa Tamotsu
東京農工大学
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Takizawa Tamotsu
Division Of Pathology National Institute Of Health
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Takizawa Tamotsu
Division Of Pathology National Institute Of Health Sciences
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Hirose Masao
国立医薬品食品衛生研究所 病理
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Tamura Toru
Division Of Pathology National Institute Of Health Sciences
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Tamura Toru
Toxicology Research Laboratory R & D Kissei Pharmaceutical Co. Ltd.
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Takagi Hisayoshi
国立医薬品食品衛生研究所
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Takagi Hisayoshi
Division Of Pathology National Institute Of Health Sciences
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Onodera Hiroshi
東京都健康安全研究センター
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小野寺 博志
Division Of Pathology National Institute Of Health Sciences
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Onodera Hiroshi
Pharmaceuticals And Medical Devices Agency
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Tamura Tomohide
Medical Oncology Division National Cancer Center Hospital
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Makita Hiroki
岐阜大学 第1病理
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Mitsumori Kunitoshi
Department Of Pathology National Institute Of Health Sciences
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Hirose Masao
Division Of Pathology National Institute Of Health Sciences
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Hirose Masao
Div. Pathol. Natl. Inst. Htlh. Sci.
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Mitsumori Kunitoshi
Division Of Pathology National Institute Of Health Sciences
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今井 淑夫
Division Of Pathology National Institute Of Health Sciences
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今井 淑夫
東京工業大学部有機材科工学科
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Ueda Makoto
Division Of Pathology National Institute Of Health Sciences
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Onodera H
Pharmaceuticals And Medical Devices Agency
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三森 国敏
Division Of Pathology National Institute Of Health Sciences
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Usami Makoto
Division Of Pharmacology Biological Safety Research Center National Institute Of Health Sciences
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今井 淑夫
東京工業大学
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Matsumoto K
Laboratory Of Veterinary Pathology Tokyo University Of Agriculture And Technology
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Usami M
Division Of Pathology National Institute Of Health Sciences
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Onodera Hiroshi
Dvision Of Pathology Biological Safety Research Center National Institute Of Health Sciences
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Imai Toshio
Division Of Oncological Pathology Aichi Cancer Center Research Institute
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Ueda Makoto
Division Of Mathematical Sciences Graduate School Of Science And Technology Chiba University
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Tamura Toru
Div. Of Pathology Nihs
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Tamura Toru
Division Of Pathology National Institute Of Health
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