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Position: Home > Articles > Effects of Porcine Rotavirus NSP4 on Cellular Localization and Cell Apoptosis Progress in Veterinary Medicine 2015 (10) 1-4

猪轮状病毒NSP4的细胞定位及在细胞凋亡中的作用

作  者:
建琛瑶;王静;董望;张彦明
单  位:
西北农林科技大学动物医学院
关键词:
猪小肠上皮细胞;猪轮状病毒;非结构蛋白4;viroporin;细胞凋亡
摘  要:
为研究猪轮状病毒非结构蛋白NSP4的细胞定位及其蛋白功能,将构建的重组质粒pNSP4-EGFP,pviroporin-EGFP和pEGFP-N1空载体质粒转染到SIEC02细胞株,通过与内质网定位蛋白的共聚焦分析、实时荧光定量PCR检测和Western blot分析,发现NSP4主要分布于内质网,少数定位于细胞核;NSP4蛋白可显著上调Bax基因水平(P<0.01)和caspase-3蛋白表达水平。说明猪轮状病毒NSP4蛋白具有类似viroporin的功能,主要定位于内质网上;NSP4依赖或部分依赖caspase的激活和Bax的活化促进细胞凋亡。
译  名:
Effects of Porcine Rotavirus NSP4 on Cellular Localization and Cell Apoptosis
作  者:
JIAN Chen-yao;WANG Jing;DONG Wang;ZHANG Yan-ming;College of Veterinary Medicine,Northwest A & F University;
关键词:
swine intestinal epithelial cells;;Porcine rotavirus;;NSP4;;viroporin;;cell apoptosis
摘  要:
The study was to explore the localization of porcine rotavirus nonstructural protein 4(NSP4)in the immortalized swine intestinal epithelial cells(SIEC02)established by our laboratory,as well as its protein function.The eukaryotic recombinant plasmids pNSP4-EGFP,pViroporin-EGFP,and pEGFP-N1 vector were transfected transiently into SIEC02 cells.By means of confocal microscopic analysis with endoplasmic reticulum(ER)positioning vector,real-time fluorescent quantitative PCR and Western blot analysis,the results showed that NSP4 were mainly localized in the ER and few were localized in the cell nucleus;the relative mRNA levels of Bax and the protein expression of caspase-3were upregulated significantly in the group of NSP4overexpression(P<0.01).This illustrates that porcine rotavirus NSP4 has similar function with viroporin,mainly localized in the ER;NSP4-induced apoptosis at least partly depended on the caspase and Bax activation in the immortalized swine intestinal epithelial cells.

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