|本期目录/Table of Contents|

[1]孙东君,霍 泉,李 婷,等.体外神经细胞过表达Mex3C-1对诱导性Fos表达的影响[J].宁夏医科大学学报,2019,(06):551-555.[doi:10.16050/j.cnki.issn1674-6309.2019.06.003]
 SUN Dongjun,HUO Quan,LI Ting,et al.Overexpression of Mex3C-1 Enhances and Prolongs the Expression of Induced Fos in Neuroblastoma Cells[J].Ningxia Medical University,2019,(06):551-555.[doi:10.16050/j.cnki.issn1674-6309.2019.06.003]





Overexpression of Mex3C-1 Enhances and Prolongs the Expression of Induced Fos in Neuroblastoma Cells
孙东君1 霍 泉1 李 婷1 翟思凡1 孙 婷2 杜 勇3
(1. 宁夏医科大学,银川 750004; 2. 宁夏医科大学总医院生物样本库,银川 750004; 3. 宁夏医科大学总医院小儿外科,银川 750004)
SUN Dongjun1 HUO Quan1 LI Ting1 ZHAI Sifan1 SUN Ting2 DU Yong3
(1. Ningxia Medical University,Yinchuan 750004,China; 2. Department of Biobank,the General Hospital of Ningxia Medical University,Yinchuan 750004,China; 3. Department of Pediatric Surgery, the General Hospital of Ningxia Medical University,Yinchuan 750004,China)
Mex3C-1 Fos lentiviral vector overexpression cell line
目的 探讨Mex3C-1对卡巴胆碱诱导的Fos表达的影响。方法 将具有可持续表达人Mex3C-1序列的质粒pLV-CMV-Mex3C(OE)在HEK293T细胞中包装成慢病毒载体,同时制备非特异性对照(NC)CmiR0001-MR03的慢病毒载体,分别感染人神经母细胞瘤细胞SH-SY5Y,经嘌呤霉素筛选后得到稳定高表达Mex3C-1和阴性对照细胞系,用Real time PCR和Western blot方法检测Mex3C-1的基因和蛋白表达效果。之后用卡巴胆碱诱导Fos表达,在诱导0、30、60、90和120min后分别提取mRNA,采用Real time PCR方法检测Fos mRNA的相对表达量。结果 Real time PCR检测结果显示,OE组的Mex3C-1 mRNA的相对表达量(21.11±0.60)高于NC组(1.03±0.13)(t=32.63,P=0.000)。Western blot结果显示,在82kDa处OE组的Mex3C-1蛋白表达量高于NC组(P<0.001)。Real time PCR检测不同干预时间两组Fos mRNA,除0min外各个时间点OE组均高于NC组,表明Mex3C-1的过表达可以明显上调Fos mRNA的表达;NC组于120min时已基本恢复至基础值,而OE组120min时Fos mRNA表达量仍然较高,Mex3C-1过表达可以延长Fos mRNA的半衰期,增强其稳定性,OE组与阴性对照NC组比较,Fos mRNA表达量差异有统计学意义(F=287.069,P=0.000)。结论 持续过表达Mex3C-1的人神经母细胞瘤SH-SY5Y细胞系建立成功,且Mex3C-1过表达能够明显增强卡巴胆碱诱导的Fos表达程度并增强其稳定性。
Objective To investigate the regulation of overexpressed Mex3C-1 on the expression of induced Fos. Methods HEK293T cells were cultured for transfection of pLV-CMV-Mex3C (OE) and its nontargeting control CmiR0001-MR03(NC) to produce lentivirus. Neuroblastoma cells SH-SY5Y were cultured for transduction of the lentivirus to build stable cell lines. Real time PCR and Western blot were then performed to detect Mex3C-1 expression. The mRNA was purified after 0,30,60,90,120 minutes of Fos induction by carbachol,and was reverse transcribed to cDNA for further Fos mRNA detection through Real time PCR to investigate the regulation of Mex3C-1 overexpression on induced Fos. Results The expression of Mex3C-1 mRNA in both OE and NC was detected by Real time PCR. The relative expression of Mex3C-1 mRNA in OE (21.11±0.60) was remarkably higher than NC(1.03±0.13) (t=32.63,P=0.000). Western blot found the protein expression of Mex3C-1 in OE cell line was obviously higher than that of NC cell line at 82kDa. The expression of induced Fos mRNA at different time was analyzed by Real time PCR, showing that except 0min, expression at each time in OE was higher than that of NC,and at 120min the expression of Fos mRNA in NC decreased to basic level while expression in NC was still high. The data revealed that overexpressed of Mex3C-1 increased the expression and half-life of induced Fos mRNA (F=287.069,P=0.000). Conclusion In neuroblastoma cell SH-SY5Y, overexpression of Mex3C-1 enhances and prolongs the expression of Fos induced by carbachol in vitro.


[1] Buchet-Poyau K,Courchet J,Le Hir H,et al. Identification and characterization of human Mex-3 proteins,a novel family of evolutionarily conserved RNA-binding proteins differentially localized to processing bodies[J]. Nucleic Acids Res,2007,35(4):1289–1300.
[2] Cano F,Bye H,Duncan LM,et al. The RNA-binding E3 ubiquitin ligase MEX-3C links ubiquitination with MHC-I mRNA degradation[J]. Embo J,2012,31(17):3596-3606.
[3] Jiao Y,George SK,Zhao Q,et al. Mex3c mutation reduces adiposity and increases energy expenditure[J]. Mol Cell Biol,2012,32(21):4350-4362.
[4] Han C,Jiao Y,Zhao Q,et al. Mex3c mutation reduces adiposity partially through increasing physical activity[J]. J Endocrinol,2014,221(3):457-468.
[5] Sheng M,Greenberg ME. The regulation and function of c-fos and other immediate early genes in the nervous system[J]. Neuron,1990,4(4):477-485.
[6] Dhillon H, Zigman JM, Ye C, et al. Leptin directly activates SF1 neurons in the VMH, and this action by leptin is required for normal body-weight homeostasis[J]. Neuron, 2006, 49(2):191-203.
[7] Cowley MA,Smart JL,Rubinstein M,et al. Leptin activates anorexigenic POMC neurons through a neural network in the arcuate nucleus[J]. Nature,2001,411(6836):480-484.
[8] Li X,Li Y,Liu C,et al. Oocyte-Specific expression of mouse MEX3C652AA in the ovary and its potential role in regulating maternal Fos mRNA[J]. Biol Reprod,2016,94(5):115.
[9] Yan J,Bishop CE,Baisong L. Mex3c regulates insulin-like growth factor 1(IGF1) expression and promotes postnatal growth[J]. Mol Biol Cell,2012,23: 1404-1413.
[10] Pin L,Huanhuan L,Ning L,et al. MEX3C interacts with adaptor-related protein complex 2 and involves in miR-451a exosomal sorting[J]. Plos One,2017,12(10):e018599.
[11] Cano F,Bye H,Duncan LM,et al. The RNA-binding E3 ubiquitin ligase MEX-3C links ubiquitination with MHC-I mRNA degradation[J]. Embo J,2012, 31(17):3596-3606.
[12] Kong D,Tong Q,Ye C,et al. GABAergic RIP-Cre neurons in the arcuate nucleus selectively regulate energy expenditure[J]. Cell,2012,15(1):645–657.
[13] Qiu J,Zhang C,Borgquist A,et al. Insulin excites anorexigenic proopiomelanocortin neurons via activation of canonical transient receptor potential channels[J]. Cell Metab,2014,19(4):682-693.
[14] Pedroso JA,Buonfiglio DC,Cardinali LI,et al. Inactivation of SOCS3 in leptin receptor-expressing cells protects mice from diet-induced insulin resistance but does not prevent obesity[J]. Mol Metab,2014,3(6):608–618.
[15] Cui MY,Hu CK,Pelletier C,et al. Ancient origins and evolutionary conservation of intracellular and neural signaling pathways engaged by the leptin receptor[J]. Endocrinology,2014,155(11):4202-4214.


[1]王 燕,乔立娇,陈耀平.靶向PRL-3基因的shRNA慢病毒载体的构建及鉴定[J].宁夏医科大学学报,2019,(01):28.[doi:10.13264/j.cnki.ysjskx.2019.01.006]
 WANG Yan,Qiao Lijiao,CHEN Yaoping.Construction and Identification of PRL-3 shRNA Lentiviral Vector[J].Ningxia Medical University,2019,(06):28.[doi:10.13264/j.cnki.ysjskx.2019.01.006]
[2]冯薛烟,丁向春,雒 夏,等.过表达ADH1B基因HepG2.2.15细胞株的建立[J].宁夏医科大学学报,2018,(08):869.[doi:10.16050/j.cnki.issn1674-6309.2018.08.001]
 FENG Xueyan,DING Xiangchun,LUO Xia,et al.Establishment of Stable HepG2.2.15 Cell Strain Overexpressing ADH1B Gene[J].Ningxia Medical University,2018,(06):869.[doi:10.16050/j.cnki.issn1674-6309.2018.08.001]
 LIU Kunmei,ZHANG Chun,GUO Le.Construction of Lentiviral Vector Carrying AEG-1 Gene and Packing of the Lentiviruse[J].Ningxia Medical University,2017,(06):740.[doi:10.16050/j.cnki.issn1674-6309.2017.07.002]
 RAN Linwu,ZHANG Wenwen,RONG Ruiqi,et al.Study on Generation of Transgenic Mice by Intratesticular Injection of Lentiviral Vector[J].Ningxia Medical University,2017,(06):34.[doi:10.16050/j.cnki.issn1674-6309.2017.01.009]
 JIANG Tao,MA Liyuan,LI Hai,et al.Construction of DGKζ Knock-down Lentivirus Vector and Validation of Their Infection to RKO Colon Cancer Cells[J].Ningxia Medical University,2017,(06):9.[doi:10.16050/j.cnki.issn1674-6309.2017.01.003]
 WANG Qing,JIA Li,LI Wang,et al.The Effect of MST1 Overexpression on Palmitic Acid-induced LipidDroplets in the Cell Model of Non-alcoholic Fatty Liver Disease[J].Ningxia Medical University,2016,(06):381.[doi:10.16050/j.cnki.issn1674-6309.2016.04.007]
 YUAN Haifeng,YANG Shengsen,HU Lihong,et al.[J].Ningxia Medical University,2015,(06):1375.[doi:10.16050/j.cnki.issn1674-6309.2015.12.002]
 LIANG Jin-ping,HAN Huai-qing,ZHOU Ya.Effects of Sophoridine on p38 MAPK/AP-1 Signaling Pathwaysin Mouse with Endotoxemia[J].Ningxia Medical University,2012,(06):1239.


更新日期/Last Update: 2019-06-30