Induction and repair of 4-OHEN-DNA adducts in human breast cancer cells by the metabolites of equine estrogens
马雌激素代谢物对人乳腺癌细胞中 4-OHEN-DNA 加合物的诱导和修复
基本信息
- 批准号:23510081
- 负责人:
- 金额:$ 3.41万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2011
- 资助国家:日本
- 起止时间:2011 至 2013
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Hormone replacement therapy (HRT) is widely used to decrease menopausal symptoms in post-menopausal women. However, long-term HRT increases the incidence of breast, ovarian and endometrial cancers. 4-Hydroxyequilenin (4-OHEN), a metabolite of equine estrogens present in common HRT formulations (Premarin), is capable of producing bulky 4-OHEN-DNA adducts. An immunological assay using our adduct-specific antibodies revealed that 4-OHEN-DNA adducts are repaired inefficiently in human breast cancer cells. MTS assay revealed that similar 4-OHEN sensitivities are observed between human normal and repair-deficient cells. Moreover, histones including human H1 competitively inhibited the binding of the antibodies to 4-OHEN-DNA adducts in a concentration-dependent manner, which are considered as a model of damage-recognising repair protein. Thus, the formation of DNA adducts with inefficient repair character might be involved in carcinogenesis process of Premarin-induced cancers.
激素替代疗法(HRT)被广泛用于减少绝经后妇女的绝经症状。然而,长期的HRT会增加乳腺癌、卵巢癌和子宫内膜癌的发病率。4-羟基奎尼宁(4-OHEN)是常见HRT制剂(倍美力)中存在的马雌激素的代谢物,能够产生体积庞大的4-OHEN-DNA加合物。使用我们的加合物特异性抗体的免疫学检测显示,4-OHEN-DNA加合物在人乳腺癌细胞中的修复效率低下。MTS检测显示,在人类正常细胞和修复缺陷细胞之间也观察到类似的4-OHEN敏感性。此外,包括人H1在内的组蛋白以浓度依赖的方式竞争性抑制抗体与4-OHEN-DNA加合物的结合,4-OHEN-DNA加合物被认为是损伤识别修复蛋白的模型。因此,具有低效修复特性的DNA加合物的形成可能参与了倍美力诱导的癌症的发生过程。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
NBS1 による損傷乗り越えDNA合成(TLS)の制御
NBS1 对损伤幸存 DNA 合成 (TLS) 的调节
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:柳原啓見;立石智;山田晃一;森俊雄;小林純也;小松賢志
- 通讯作者:小松賢志
M 期の凝縮した染色体における細胞における DNA 修復 : 効率的なゲノム全体の除去修復と不活性な転写共役修復
M期染色体浓缩的细胞中的DNA修复:高效的全基因组切除修复和非活性转录偶联修复
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:小村潤一郎;池畑広伸;森俊雄;小野哲也
- 通讯作者:小野哲也
HCMV-infected cells maintain efficient nucleotide excision repair of the viral genome while abrogating repair of the host genome.
- DOI:10.1371/journal.ppat.1003038
- 发表时间:2012
- 期刊:
- 影响因子:6.7
- 作者:O'Dowd JM;Zavala AG;Brown CJ;Mori T;Fortunato EA
- 通讯作者:Fortunato EA
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MORI Toshio其他文献
MORI Toshio的其他文献
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{{ truncateString('MORI Toshio', 18)}}的其他基金
Transform the antibodies against DNA lesions into the repair-enhancing reagents of them
将针对 DNA 损伤的抗体转化为其修复增强试剂
- 批准号:
16H02958 - 财政年份:2016
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
A Study of Systematization of Teaching and Learning Contents in Physical Education with an Activity Theory Approach
运用活动理论方法研究体育教学内容的系统化
- 批准号:
21300223 - 财政年份:2009
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
How do mutations in the XPD result in different skin cancer susceptibilities in patients with xeroderma pigmentosum or trichothiodystrophy?
XPD 突变如何导致着色性干皮病或毛发硫营养不良患者对皮肤癌的易感性不同?
- 批准号:
20591324 - 财政年份:2008
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
SENSORY EVALUATION AND VISUAL IMFORMATION OF COLOR TEXTURE AND FABRIC APPEARANCE USING IMAGE ANALYSIS
使用图像分析对颜色纹理和织物外观进行感官评估和视觉信息
- 批准号:
16500488 - 财政年份:2004
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Curriculum Management in Physical Education : Concerning Autopoiesis of Curriculum based on practices of teaching-learning procesSes
体育课程管理:关于基于教学过程实践的课程自创生
- 批准号:
15300228 - 财政年份:2003
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
The Total Amount of DNA Damage Determines Ultraviolet-Radiation-Induced Cytotoxicity after Uniform- or Localized Irradiation of Human Cells
DNA 损伤总量决定人体细胞均匀或局部照射后紫外线辐射诱导的细胞毒性
- 批准号:
13680632 - 财政年份:2001
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Do nucleotide excision repair proteins play a role in sensing DNA damage induced by UV.
核苷酸切除修复蛋白在感知紫外线引起的 DNA 损伤中发挥作用吗?
- 批准号:
11680554 - 财政年份:1999
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
-Dynamic relations which consist of subject matter, collaborative learning systemand problem solving act-
-由主题、协作学习系统和问题解决行为组成的动态关系-
- 批准号:
11480013 - 财政年份:1999
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
An Evaluation Research of School Counseling System
学校辅导制度评价研究
- 批准号:
10610100 - 财政年份:1998
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Three dimensional visualization of UV-induced DNA damage and repair enzymes in human fibroblasts.
人体成纤维细胞中紫外线诱导的 DNA 损伤和修复酶的三维可视化。
- 批准号:
09680533 - 财政年份:1997
- 资助金额:
$ 3.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)














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