项目名称: FSTL1在睡眠呼吸暂停模式间歇低氧促进肿瘤细胞肺转移过程中的作用和分子机制研究
项目编号: No.81500070
项目类型: 青年科学基金项目
立项/批准年度: 2016
项目学科: 医药、卫生
项目作者: 李莲
作者单位: 天津医科大学
项目金额: 17万元
中文摘要: 阻塞性睡眠呼吸暂停(OSA)是一个由多种病因导致患者睡眠中上气道异常狭窄和续发以间歇性低氧(IH)为主要病理特征的睡眠呼吸疾病,研究表明OSA患者肿瘤发病和死亡率增加,且与IH有关。目前关于OSA 模式 IH 促进肿瘤发生和进展病理机制尚不清楚。FSTL1是一个新的促炎症分子,前期研究发现Fstl1 mRNA在IH促进肿瘤细胞肺转移小鼠模型中上调,推测其可能在此过程中发挥重要作用。本课题拟在临床患者、动物和细胞三个水平,研究FSTL1表达及其在OSA模式IH促进肿瘤细胞肺转移中的作用和分子机制。研究以正常人和OSA患者为对照组,研究OSA并患有癌症患者中FSTL1表达并初步评估其与疾病进展关系;通过IH处理的肿瘤细胞模型和肺转移小鼠模型, 利用Fstl1突变体小鼠研究FSTL1下调或过表达对OSA模式IH促进肿瘤细胞肺转移的作用和机制。为预防肿瘤发生和对已发生肿瘤进行有效治疗,提供新靶点。
中文关键词: 阻塞性睡眠呼吸暂停;间歇低氧;滤泡素抑制素样蛋白1;肿瘤转移
英文摘要: Obstructive sleep apnea (OSA) is a common disorder characterized by repetitive intermittent hypoxia (IH) ventilation during sleep caused by recurrent upper airway collaps. Recently, several studies have demonstrated that patients with OSA had a higher prevalence of cancer and cancer-related mortality. However, the pathomechanism of IH in OSA inducing tumor metastasis is unclear. FSTL1 is a new proinflammatory molecule, Fstl1 mRNA is overexpressed in a mouse model of IH-induced tumor metastasis in previous study. FSTL1 may play important roles in this process of IH-induced tumor metastasis. In this study, we will explore the expression level of FSTL1 and its molecular mechanism and biological role in IH-induced tumor metastasis in three levels including clinical patients, mouse model and cell lines. In this study, we will use Fstl1 mutant mice and cell biology and molecular biology techniques to analyze the effect of FSTL1 downregulation or overexpression on IH-induced tumor metastasis by IH-induced tumor cell model and IH-induced tumor metastasis mouse model. The study may provide a new therapeutic target to prevent the occurrence of tumors and effective interventions in the treatment of cancer
英文关键词: obstructive sleep apnea;intermittent hypoxia; FSTL1;metastasis