项目名称: 二酰甘油激酶θ参与非酒精性脂肪肝的发生与缓解过程中的分子机制
项目编号: No.31470058
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 生物科学
项目作者: 蔡凯
作者单位: 陕西师范大学
项目金额: 30万元
中文摘要: 由DAG来源的三酰甘油(TAG)的蓄积和胰岛素抵抗是非酒精性脂肪肝(NAFLD)发生的重要诱因,但目前对NAFLAD的发病机制并不十分清楚。我们前期发现,在肝细胞中胆汁酸可通过激活DGKθ有效降低二酰甘油和葡萄糖的浓度,推测DGKθ可能在NAFLD发生和缓解过程中发挥着关键性的作用。本课题拟采用靶向基因组编辑技术建立针对 DGKθ基因敲除的小鼠肝癌Hepa1-6细胞系。通过分析所建细胞模型中糖、脂代谢相关生化指标的以及相关调节基因的变化,以确定DGKθ在NAFLD发生过程中的作用,为阐明DGKθ在NAFLD发生和缓解过程中的调控分子机制及NAFLD的预防与治疗奠定基础。
中文关键词: 非酒精性脂肪肝;胰岛素抵抗;三酰甘油蓄积;糖脂代谢;基因编辑技术
英文摘要: Diacylglycerol induced triglycerides(TAG)accumulation and insulin resistance are cosidered as the main risk factor of Non-alcoholic fatty liver disease (NAFLD). We previously found the bile acids reduced hepatic DAG and glucose concentration through a Diacylglycerol Kinasesθ (DGKθ)-dependent pathway. Therefore, DGKθ may be invloved in NAFLD pathogenesis and treatment. Here, we will utilize Cas9-sgRNA to knockout hepatic DGKθ in mice model and characterize the effect of silencing DGKθ on the hepatic steatosis and insulin sensitivity. Using genome-wide microarray analysis and molecular techonology, we will further identify the target genes of DGKθ involved in glucose and lipid metabolism. Finally, we will access the role of DGKθ in the bile acids improvement on NAFLD. The importance and novelty of our study is the possibility to identify the role of DGKθ in the mechanism of NAFLD, and proposes DGKθ as a new drug target for NAFLD treatment.
英文关键词: Non-alcoholic fatty liver disease;Insuin resistance;Triglycerides accumulation;Glucose and lipid metabolism;genome-editing