刘星伟 林志东 李毅
[摘要] 目的 探讨新型雌激素受体-G蛋白偶联受体与ERα、ERβ在甲状腺癌组织中的表达特征及其与患者临床资料的相关性。 方法 选取2014年2月~2017年9月我院普通外科85例甲状腺乳头状腺癌组织标本,平均年龄38.7(23~77)岁,对组织标本进行免疫组化染色,分析甲状腺癌组织中G蛋白偶联受体、ERα及ERβ的表达特征。 结果 甲状腺乳头状癌组织中GPER、ERα及ERβ阳性表达率分别为63.5%、71.8%、67.1%,呈高表达状态;但这三种雌激素受体表达的阳性率与患者年龄、性别、肿瘤分期、淋巴结转移状态、肿瘤大小等无明显相关;GPER与ERα及ERβ的表达呈正相关。 结论 三种雌激素受体包括G蛋白偶联受体、ERα及ERβ均與甲状腺癌的发生、发展密切相关,是极具研究价值的潜在治疗靶点。
[关键词] 甲状腺癌;雌激素受体;G蛋白偶联受体;ERα;ERβ;免疫组织化学
[中图分类号] R736.1 [文献标识码] A [文章编号] 1673-9701(2018)25-0020-03
[Abstract] Objective To investigate the expression characteristics of novel estrogen receptor-G protein coupled receptors, ERα and ERβ in thyroid carcinoma tissues and their correlation with clinical data. Methods A total of 85 specimens of thyroid papillary adenocarcinoma in the general surgery of our hospital from February 2014 to September 2017 were collected. The average age of patients was 38.7(23-77) years old. Immunohistochemical staining of tissue specimens was performed. Expression characteristics of G protein-coupled receptors, ERα and ERβ in the thyroid cancer tissues were analyzed. Results The positive expression rates of GPER, ERα and ERβ in papillary thyroid carcinoma were 63.5%, 71.8%, and 67.1%, respectively, showing high expression status. However, there was no significant correlation between the positive rates of these three estrogen receptors and age, gender, tumor stage, lymph node metastasis status, tumor size, etc. GPER was positively correlated with ERα and ERβ expression. Conclusion The three estrogen receptors including G protein-coupled receptors, ERα and ERβ are closely related to the occurrence and development of thyroid cancer, and are potential therapeutic targets with great research value.
[Key words] Thyroid carcinoma; Estrogen receptor; G protein-coupled receptor; ERα; ERβ; Immunohistochemistry
研究显示甲状腺恶性肿瘤在女性中的发病率高于男性,可达3~4倍,据此不难推断雌激素很可能与甲状腺癌的发生发展有密切关联[1,2]。部分研究证实雌激素可通过与两个雌激素受体(estrogen receptor)ERα及ERβ的相互作用来表现其生理和病理生理作用,ERα及ERβ是作为配体激活的转录因子[3],一种独立于核受体ERα和ERβ的新型雌激素受体-G蛋白偶联受体-GPER(G protein-coupled estrogen receptor)已被确定为ER家族的新成员,其能够以较高的亲和力结合雌激素,并通过下游级联介导反应触发对雌激素的反应[4,5]。为探讨它们在甲状腺癌尤其是甲状腺乳头状癌(papillary thyroid carcinoma PTC)中的作用,本研究通过免疫组织化学方法检测85例甲状腺乳头状癌组织中GPER、ERα及ERβ的表达,分析其与PTC临床病理特征之间的相关性,探讨不同雌激素受体与甲状腺乳头状癌发生、发展的关系。……