乙肝病毒X蛋白结合蛋白通过下调PEPCK的表达抑制肝脏糖异生(英文)
发布时间:2021-05-14 16:47
乙肝病毒X蛋白结合蛋白(hepatitis B X-interacting protein,HBXIP)可以调节乳腺癌中糖代谢重编程.为了研究HBXIP在生理条件下对糖代谢的调节作用及机制,本研究利用Cre/lox P重组酶系统成功构建了肝脏组织中HBXIP特异敲除小鼠.当小鼠接受刺激后,与正常组小鼠相比,肝脏HBXIP敲除小鼠表现基础糖代谢功能异常,如葡萄糖、丙酮酸;相对于对照小鼠,肝脏HBXIP敲除小鼠对糖异生和胰岛素耐受性减弱. RT-PCR、Western blot实验和免疫组化实验结果表明,HBXIP敲除小鼠肝脏组织中糖异生关键酶磷酸烯醇式丙酮酸羧化酶(phosphoenolpyruvate carboxykinase,PEPCK)表达显著增加. QRT-PCR分析30例临床肝组织中HBXIP m RNA和PEPCK m RNA表达水平发现,HBXIP与PEPCK表达水平呈负相关.荧光素酶报告基因实验和Ch IP实验结果表明HBXIP可以在基因转录水平调节PEPCK表达.以上结果表明,HBXIP通过调节糖异生关键酶PEPCK的表达参与调控小鼠肝脏糖异生.
【文章来源】:生物化学与生物物理进展. 2019,46(02)北大核心SCICSCD
【文章页数】:8 页
【文章目录】:
1 Introduction
2 Materials and methods
2.1 Liver specific HBXIP knockout mice
2.2 RT-PCR and qRT-PCR
2.3 Histological analyses
2.4 Cell culture
2.5 Western blot analysis and small interference RNA (siRNA)
2.6 Glucose tolerance test (GTT) and pyruate tolerance test (PTT)
2.7 Luciferase reporter gene assays
2.8 Chromatin immunoprecipitation (ChIP) assays
2.9 Statistical analysis
3 Results
3.1 Generation of liver-specific HBXIP-/-mice
3.2 LiverHBXIP-/-mice display glucose metabolism dysregulation involving gluconeogenesis
3.3 HBXIP is able to suppress PEPCK expression in liver
3.4 HBXIP inhibits PEPCK at transcriptional level in liver
4 Discussion
本文编号:3185988
【文章来源】:生物化学与生物物理进展. 2019,46(02)北大核心SCICSCD
【文章页数】:8 页
【文章目录】:
1 Introduction
2 Materials and methods
2.1 Liver specific HBXIP knockout mice
2.2 RT-PCR and qRT-PCR
2.3 Histological analyses
2.4 Cell culture
2.5 Western blot analysis and small interference RNA (siRNA)
2.6 Glucose tolerance test (GTT) and pyruate tolerance test (PTT)
2.7 Luciferase reporter gene assays
2.8 Chromatin immunoprecipitation (ChIP) assays
2.9 Statistical analysis
3 Results
3.1 Generation of liver-specific HBXIP-/-mice
3.2 LiverHBXIP-/-mice display glucose metabolism dysregulation involving gluconeogenesis
3.3 HBXIP is able to suppress PEPCK expression in liver
3.4 HBXIP inhibits PEPCK at transcriptional level in liver
4 Discussion
本文编号:3185988
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