【摘 要】
:
目的 探讨在肝卵圆细胞自我更新及增殖的调控中Bmi1是否通过Ink4a/Arf通路发挥作用.方法 利用前期构建的野生型小鼠、Bmi1肝脏特异性敲除(Bmi1alb-/-)小鼠以及Bmi1、Ink4a/Arf双基因肝脏特异敲除(Bmi1alb-/-;Ink4a/Arfalb-/-)小鼠,用PCR技术及Western印迹法对敲除效率做了验证(90%).通过给3种品系小鼠连续喂食3周0.1%DDC食物来
【机 构】
:
710032 第四军医大学西京消化病医院消化内科 北京生命科学研究所
【出 处】
:
The 14th Congress of Gastroenterology China(第十四届全国消化系病学术会议)
论文部分内容阅读
目的 探讨在肝卵圆细胞自我更新及增殖的调控中Bmi1是否通过Ink4a/Arf通路发挥作用.方法 利用前期构建的野生型小鼠、Bmi1肝脏特异性敲除(Bmi1alb-/-)小鼠以及Bmi1、Ink4a/Arf双基因肝脏特异敲除(Bmi1alb-/-;Ink4a/Arfalb-/-)小鼠,用PCR技术及Western印迹法对敲除效率做了验证(90%).通过给3种品系小鼠连续喂食3周0.1%DDC食物来诱导小鼠肝卵圆细胞扩增模型.利用免疫组织化学技术特异性地给小鼠肝卵圆细胞染色(肝脏卵圆细胞特异性标示物Epcam),并通过Epcam的表达情况来分析不同品系小鼠肝脏中卵圆细胞的扩增情况.结果 与没有喂食0.1%DDC食物的野生型小鼠相比,喂食3周0.1%DDC食物的野生型小鼠肝脏中卵圆细胞数目明显增加(P<0.05).在喂食3周0.1%DDC食物后,Bmi1alb-/-小鼠肝脏中肝卵圆细胞数明显少于野生型小鼠肝脏中卵圆细胞数(P<0.05);而Bmilalb-/-;Ink4a/Arfalb-/-小鼠肝脏中卵圆细胞数多于Bmi1alb-/-小鼠肝脏中卵圆细胞数(P<0.05),但少于野生型小鼠肝脏中卵圆细胞数(P<0.05).结论 Bmil促进肝脏卵圆细胞的自我更新及增殖是部分依赖Ink4a/Arf通路的,但除此之外还有其他通路有待发现.
其他文献
Aims The diagnosis of primary hepatic carcinoma (PHC) with low level of serum alpha-fetoprotein (AFP) is a big challenge.The present study was aimed to establish mathematical models with conventional
Aim A novel ECM protein, SRPX2, is overexpressed in gastrointestinal cancer with the exact role remains unknown.We explore the role of SRPX2 in colon cancer.Methods Firstly, the expression of SRPX2 wa
Aims With the development and wide application of gastrointestinal endoscopy technology, endoscopic resection of the polyps in digestive tract is the first-line treatment of gastrointestinal polyps.Ho
目的 寻找无创性诊断非酒精性脂肪性肝炎(NASH)的生物指标已成为世界性探究热点课题.验证组合细胞角蛋白18-M30片段(CK-18-M30)、成纤维细胞生长因子21(FGF-21)、IL-1受体拮抗剂(IL-1Ra)、色素上皮细胞衍生因子(PEDF)和骨保护素(OPG)诊断非酒精性脂肪性肝病(NAFLD)和NASH的效能.方法 前瞻性选取配套肝穿刺活组织病理学检查的242例NAFLD患者,随机分
Aim Previous studies have revealed anti-HBc levels as predictors of treatment response in HBeAg positive chronic hepatitis B (CHB) patients in both intefferon-α and nucleos(t)ide analogue therapy coho
Aims To the best of our knowledge, this is the first study addressing the use of glucocorticoids in a comparatively special populationthe pure primary biliary cirrhosis (PBC) patients who have high le
Aim To evaluate the efficacy and safety of the Spyglass Direct Visualization System in the management of biliary disorders.Methods A comprehensive literature search was conducted using PubMed and EMBA
Aim To evaluate the indications, success rate, diagnostic and therapeutic yields, and complications of endoscopic retrograde cholangiopancreatography (ERCP) performed in Chinese children.Methods A ret
Aim To study the phenotype and function of mouse mesenteric lymph nodes dendritic cells (MLNDCs) and their ability to secrete corticotrophin releasing factor (CRF).Methods The mice mesenteric lymph no
目的 检测血清肿瘤标志物AFP、Paternally expressed gene 10(PEG10)、细胞角蛋白19(CK19)在原发性肝癌、肝硬化和健康人血清中的水平,探讨其单独检测和联合检测对原发性肝癌的临床诊断价值,分析CK19、PEG10对AFP阴性原发性肝癌的诊断价值.方法 收集河南省人民医院2012年12月至2013年11月期间住院患者的血清标本156份,患者年龄为32~81岁,平均