Role of estrogen and its receptors in ovarian cancer of the hen

雌激素及其受体在母鸡卵巢癌中的作用

• 批准号: 7331874
• 负责人: LINDSEY Starr Trevino
• 金额: $ 3.75万
• 依托单位: CORNELL UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7331874
• 关键词: Cancer Etiology; Cessation of life; Contraceptive Agents; Cultured Cells; Disease Progression; Estradiol; Estrogen Nuclear Receptor; Estrogen Receptors; Estrogens; Etiology; Hormone replacement therapy; Human; Immunohistochemistry; In Vitro; Incidence; Lead; Malignant neoplasm of ovary; Mediating; Methods; Modeling; Molecular; Ovarian Tissue; Pathway interactions; Play; Polymerase Chain Reaction; Risk; Role; Techniques; Western Blotting; Woman; design; human disease; in vivo; ovarian neoplasm; pill; receptor; steroid hormone; tumor; tumor initiation

DESCRIPTION (provided by applicant): Project summary: Ovarian cancer is the fifth leading cause of cancer death among women. It is known that there is an increased risk of ovarian cancer in women who are on estrogen-only hormone replacement therapy and possible decreased risk in women who take the contraceptive pill, lending support to the idea that steroid hormones are playing a role in the etiology of ovarian cancer. This project is designed to clarify the role of estrogen and its receptors in ovarian cancer of the domestic hen. The hen is a good model because it develops ovarian cancer with a high spontaneous incidence. The specific aims of this study are to: 1) determine whether ovarian cancer in the hen is estrogen dependent; 2) determine if the estrogen receptor is differentially regulated in ovarian cancer; 3) characterize the non-nuclear estrogen receptor; and 4) determine downstream pathways associated with estrogen receptor mediated proliferation. These questions will be answered using a variety of molecular techniques including PCR, Western blot, immunohistochemistry and microarray analyses, in vitro methods including cell culture, ex vivo (or in ovo) methods including CAM grafts of normal and tumor ovarian tissue, and in vivo methods including treatment of hens with estradiol. Once these questions are answered, we will have a better understanding of the role of estrogen and its receptors in ovarian cancer. These answers will also allow us to understand the mechanism of estrogen action promoting the formation or proliferation of ovarian tumors in the hen, which may be correlated to the role estrogen and its receptors may play in human ovarian cancer. Furthermore, understanding estrogen's actions might lead to possible treatment options that could be applicable to human disease. Relevance: Ovarian cancer is the fifth leading cause of cancer death among women. Estrogens may promote ovarian tumor initiation or proliferation; therefore, it is important to understand its role in the origin or progression of the disease.

描述（由申请人提供）：项目概述：卵巢癌是女性癌症死亡的第五大原因。众所周知，仅接受雌激素替代疗法的女性患卵巢癌的风险增加，服用避孕药的女性患卵巢癌的风险可能降低，这支持了类固醇激素在卵巢癌病因学中发挥作用的观点。本项目旨在阐明雌激素及其受体在母鸡卵巢癌中的作用。母鸡是一个很好的模型，因为它患卵巢癌的自发发病率很高。本研究的具体目的是：1）确定母鸡的卵巢癌是否是雌激素依赖性的; 2）确定卵巢癌中雌激素受体是否受到差异调节; 3）表征非核雌激素受体; 4）确定与雌激素受体介导的增殖相关的下游途径。这些问题将使用多种分子技术来回答，包括PCR、Western印迹、免疫组织化学和微阵列分析，体外方法包括细胞培养，离体（或卵内）方法包括正常和肿瘤卵巢组织的CAM移植物，以及体内方法包括用雌二醇治疗母鸡。一旦这些问题得到解答，我们将更好地了解雌激素及其受体在卵巢癌中的作用。这些答案也将使我们了解雌激素促进母鸡卵巢肿瘤形成或增殖的作用机制，这可能与雌激素及其受体在人类卵巢癌中的作用有关。此外，了解雌激素的作用可能会导致可能适用于人类疾病的治疗选择。相关性：卵巢癌是女性癌症死亡的第五大原因。雌激素可能促进卵巢肿瘤的发生或增殖;因此，了解其在疾病起源或进展中的作用是很重要的。