期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
全反式视黄酸通过RARγ蛋白直接调控PPARγ2蛋白抑制骨髓间充质干细胞成脂分化 被引量:3
1
作者 刘祖银 李清 +2 位作者 陈丽君 陈洁 刘友学 《上海交通大学学报(医学版)》 CAS CSCD 北大核心 2015年第5期682-687,共6页
目的研究高浓度全反式视黄酸(atRA)抑制大鼠骨髓间充质干细胞(r BMSCs)成脂分化过程中,视黄酸核受体γ(RARγ)对过氧化物酶体增殖激活受体γ2(PPARγ2)与CCAAT增强子结合蛋白α(C/EBPα)调控的机制。方法体外分离、培养、诱导r BMSCs。... 目的研究高浓度全反式视黄酸(atRA)抑制大鼠骨髓间充质干细胞(r BMSCs)成脂分化过程中,视黄酸核受体γ(RARγ)对过氧化物酶体增殖激活受体γ2(PPARγ2)与CCAAT增强子结合蛋白α(C/EBPα)调控的机制。方法体外分离、培养、诱导r BMSCs。成脂分化诱导液中,加入0.5、1.0μmol/L atRA持续作用15 d后,real-time PCR和Western blotting分别检测RARγ、C/EBPα、PPARγ2的mRNA和蛋白表达水平。重组腺病毒过表达RARγ(over-RARγ)、沉默RARγ(si-RARγ)分别感染BMSCs,采用real-time PCR及Western blotting检测RARγ、C/EBPα、PPARγ2的mRNA及蛋白表达水平。Co-IP检测1.0μmol/L atRA持续成脂诱导15 d后,明确RARγ与PPARγ2两者之间是否有相互作用。结果诱导15 d结束时,与对照组相比,加入0.5、1.0μmol/L atRA后,RARγ表达明显增加(P<0.01,P<0.001),而PPARγ2、C/EBPα表达明显降低(P<0.001)。over-RARγ组:RARγmRNA和蛋白表达均较对照组明显增加(P<0.01),而PPARγ2、C/EBPαmRNA和蛋白表达均较对照组明显降低(P<0.05,P<0.01)。si-RARγ组:RARγ蛋白表达较对照组明显减低,但PPARγ2、C/EBPα却无明显变化。Co-IP结果提示:RARγ与PPARγ2蛋白之间有直接作用,形成复合物,未发现其与视黄酸反应元件(RARE)相结合证据。结论高浓度atRA抑制r BMSCs成脂分化,是通过激活视黄酸信号通路RARγ而实现的。RARγ下调成脂分化通路PPARγ2、C/EBPα表达是通过直接作用于下游的PPARγ2蛋白而实现的。 展开更多
关键词 全反式视黄酸 RARγ PPARΓ2 骨髓间充质干细胞 Co-IP
下载PDF
Correlation between the Polymorphism of PPARγ-2 gene and the Susceptibility of Type 2 Diabetes Mellitus in Guangxi Bama Mini-pigs 被引量:1
2
作者 LIANG Jia-chong GUO Ya-fen +2 位作者 CHEN Jiang-wei YANG Liu LAN Gan-qiu 《Animal Husbandry and Feed Science》 CAS 2012年第6期254-257,共4页
[ Objective] The research aimed to discuss the relationship between the polymorphism of PPARy.2 gene and the susceptibility of type 2 diabetes mellitus (T2DM) in Guangxi Bama mini-pigs. [ Method] 24 Guangxi Bama min... [ Objective] The research aimed to discuss the relationship between the polymorphism of PPARy.2 gene and the susceptibility of type 2 diabetes mellitus (T2DM) in Guangxi Bama mini-pigs. [ Method] 24 Guangxi Bama mini-pigs were fed with high-fat and high-sucrose diet, and partial sequences of exon 2 of PPARy-2 gene were amplified by using PCR method. In addition, the contents of fasting blood glucose and insulin (INS) in Guangxi Bama mini-pigs were determined, and the glucose tolerance test (GTT) was also carried out. [ Result] There was one SNP site (19813A/G) Jn partial sequence of exon 2 of the cloned PPAFly-2 gene, and AA (7 pigs) and AG (17 pigs) genotype were detected. The contents of fasting insulin and 60-min blood glucose in GTT in AG-genotype Guangxi Bama mini-pigs were significantly higher than those of AA genotype ( P 〈0.05), while the incidence of T2DM in AG-genotype Guangxi Bama mini-pigs (71.4%) was obviously higher than that of AA gen- otype (5.9%). [ Conclusion] The polymorphism of 19813A/G in exon 2 of PPARy-2 gene was related with the susceptibility of T2DM in Guangxi Bama mini-pigs. 展开更多
关键词 Guangxi Bama mini-pig ppary-2 gene Type 2 diabetes mellitus (T2DM)
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部