项目名称: 新疆汉族及维吾尔族前列腺癌发病与PI3K/AKT/mTOR信号通路遗传易感基因的关联研究及机制研究
项目编号: No.81460513
项目类型: 地区科学基金项目
立项/批准年度: 2015
项目学科: 医药、卫生
项目作者: 李巧新
作者单位: 新疆医科大学
项目金额: 65万元
中文摘要: 近年来我国前列腺癌的发病率有明显提高的趋势,研究发现新疆维吾尔族和汉族的前列腺癌存在流行病学的差异。PI3K/AKT/mTOR信号通路是调控细胞增殖、维持细胞恶性的重要信号通路之一。我们的前期研究发现mTOR基因多态性位点显著提高了汉族前列腺癌的发病风险,在此基础上我们提出假说:该通路中基因的遗传变异可能会引起信号通路调控异常,并与前列腺癌的发生有关。为了验证这一假说,我们采取第二代测序技术及SNP分型芯片,并探讨该信号通路易感基因标签单核苷酸多态性位点与前列腺癌发病风险的关系,同时进行民族相关性分析。通过运用双荧光素酶报告基因活性分析、real-time PCR、染色质免疫沉淀等方法,并分组进行mTOR抑制剂干预效果比较研究,从分子、细胞、组织等不同层面验证人群宏观研究结果。本研究对揭示不同民族中mTOR信号通路易感基因参与前列腺癌发病的分子遗传学研究具有重要意义。
中文关键词: 前列腺癌;易感性;基因多态性;mTOR通路
英文摘要: Prostate cancer is one of the rapidly increased malignancy in China with significant ethnic differences in susceptibility and clinical features, but the exact mechanism is still unestablished. The phosphoinositide-3 kinase (PI3K)-AKT-mammalian target of rapamycin (mTOR) pathway is a key pathway controlling cell proliferation and tumorigenesis. Genetic variations of key genes in PI3K/AKT/mTOR pathway may cause abnormal signaling pathway- based approach to systemically evaluate potentially functional single-nucleotide polymorphisms (SNPs) of key genes in the PI3K/AKT/mTOR pathway as predictorsof prostate cancer risk in a hospital-based case-control study. Besides, we further investigated these differencebetween Han and Uygur in Xinjiang province. Further functional assay analyses were utilized to identify whether genetic variants alter its target gene expressions and transcriptional regulation. This study may give an insight in biological mechanism of PI3K/AKT/Mtor pathway in development of prostate cancer and provide biomarkers for the disease risk predication.
英文关键词: prostate cancer;susceptibility;polymorphism;mTOR pathway