HepG2细胞中SDR9C7蛋白的亚细胞定位研究  

Study on Subcellular Localization of SDR9C7 Protein in HepG2 Cells

作　　者：周洁[1,2] 曾志鹏 李金月 陈俏媛 林万华 ZHOU Jie;ZENG Zhipeng;LI Jinyue;CHEN Qiaoyuan;LIN Wanhua(Guangxi Universities Key Laboratory of Stem Cell and Biopharmaceutical Technology(Guangxi Normal University),Guilin Guangxi 541004,China;College of Life Sciences,Guangxi Normal University,Guilin Guangxi 541006,China)

机构地区：[1]广西高校干细胞与医药生物技术重点实验室(广西师范大学),广西桂林541004 [2]广西师范大学生命科学学院,广西桂林541006

出　　处：《广西师范大学学报（自然科学版）》2020年第1期102-106,共5页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家自然科学基金(31560248);广西自然科学基金(2016GXNSFAA380176);广西师范大学博士科研启动基金;广西“八桂学者”项目

摘　　要：前人研究发现SDR9C7蛋白在Hela细胞内呈颗粒状分布,但却发现它并没有亚细胞器(如过氧化物酶体、早期内涵体、线粒体、内质网或细胞核)共定位。为探讨SDR9C7蛋白的亚细胞定位,本文采用细胞免疫组化、激光共聚焦显微镜观察法,分别检测SDR9C7蛋白与油酸诱导单纯性肝脂肪变性HepG2细胞模型中的脂滴、饥饿诱导的HepG2细胞自噬模型中的自噬体和正常培养的HepG2细胞中的高尔基体的共定位情况。结果表明,SDR9C7蛋白为全细胞分散分布,没有呈颗粒状与脂滴、自噬体、高尔基体的共定位分布。Previous subcellular localization studies shows that SDR9 C7 protein showed a granular pattern in Hela cells, but counterstaining experiments showed neither peroxisomal, early endosome, endoplasmic reticulum(ER), cytoplasmic, nuclear nor mitochondrial co-localized with SDR9 C7 protein. In this study,the cellular immunofluorescence and confocal laser microscopy method were used to determine subcellular localization of SDR9 C7 protein with lipid droplets in the oleic acid induced hepatocyte steatosis model in HepG2 cells,autophagosomes in the starvation induced cellular autophagy model in HepG2 cells and Golgi apparatus in the HepG2 cells under normal culture in vitro. However, the results showed that SDR9 C7 protein distributed dispersally, and there was no granular SDR9 C7 protein co-localized with the lipid droplets, autophagosomes or Golgi apparatus.

关 键 词：SDR9C7 脂滴 自噬体 高尔基体 亚细胞定位 

分 类 号：Q28[生物学—细胞生物学]