欢迎来到天天文库
浏览记录
ID:55099144
大小:664.12 KB
页数:5页
时间:2020-05-09
《沉默癌胚抗原相关细胞黏附分子1基因抑制SHG44人胶质瘤细胞增殖并促进其凋亡.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、细胞与分子免疫学杂志(ChinJCellMolImmuno1)2015,31(123·论著·文章编号:1007—8738(2015)01—0023—04沉默癌胚抗原相关细胞黏附分子1基因抑制SHG44人胶质瘤细胞增殖并促进其凋亡许刚柱',李文,张鹏,丁志斌,赵慧,张俊锋,王茂德(西安交通大学医学院第一附属医院神经外科,陕西西安710061;西安医学院第一附属医院神经外科,陕西西安710077;西安医学院临床医学院外科学教研室,陕西西安710021)[摘要】目的采用RNA干扰技术(RNAi)沉默癌胚抗原相关细胞黏附分子1(CEACAM1)基因的表达,观察沉默效果及沉默
2、CEACAM1表达后对SHG44人胶质瘤细胞增殖和凋亡的影响。方法设计并化学合成针对CEACAM1的3对小干扰RNA(siRNA),脂质体法瞬时转染SHG44细胞。流式细胞术(FCM)检测转染效率,采用实时定量PCR(qRT—PCR)检测siRNA转染前后SHG44细胞中CEACAM1mRNA的表达,Westernblot法检测CEACAM1蛋白的表达。CCK.8法检测SHG44细胞细胞增殖活性,armexinV—FITC/PI染色结合FCM检测SHG44细胞凋亡,Westernblot法检测cleavedcaspase一3和裂解型多聚腺苷酸二磷酸核糖聚合酶(cle
3、avedPARP)的变化。结果CEACAM1siRNA转染效率达85%。与空白对照组和阴性对照组比较,qRT—PCR及Westernblot结果显示,3组特异性siRNA转染48h后,在mRNA和蛋白水平上CEACAM1的表达均降低,以CEACAM1.siRNA3效果最明显。siRNA组SHG44细胞的增殖能力较正常对照组明显下降,凋亡细胞比例增加。沉默CEACAM1表达可以上调cleavedcaspase一3和cleavedPARP的表达。结论沉默CEACAM1基因表达可有效抑制SHG44胶质瘤细胞的增殖,促进细胞凋亡。[关键词]癌胚抗原相关细胞黏附分子1(CEA
4、CAM1);胶质瘤;RNA干扰;增殖;凋亡[中图分类号]R730.264,R392—33[文献标志码】ASilencingofcarcinoembryonicantigen·relatedcelladhesionmolecule1inhibitsproliferationandinducesapoptosisinhumangliomaSHG44cellsxuGangzhu’,LIWen,ZHANGPeng,DINGZhibin,ZHAOHui,ZHANGJunfeng,WANGMaodeDepartmentofNeurosurgery,FirstAfiliatedH
5、ospital,MedicalCollegeofXi’anJiaotongUniversity,Xi’an710061;DepartmentofNeumsurgery,FirstAffiliatedHospital,Xi’anMedicalUniversity,Xi’an710077;DepartmentofSurgery,ClinicalMedicalCollege,Xi’anMedicalUniversity,Xi’an710021,ChinaIAbstractlObjective3-oinvastigatetheefectofsiRNA.inducedsile
6、ncingofcarcinoembryonicantigen-relatedcelladhesionmolecule1(CE:.AM1)0nproliferationandapoptosisinhumangliomaSHG44cells.MethodsThreepairsofspecificsiRNAtargetingCEACAM1weredesignedandsynthesized.andthentransientlytransfectedintoSHG44celsviacationicIiposometransfectionmethod.Transfection
7、eficiencywasexaminedbyflowcytometry(FCM).Real-timequantitativePCR(qRT-PCR)andWeaternblottingwererespectivelyusedtodetectCEACAM1expressionatmRNAandproteinlevels.andtheproliferationabilityandapoptosisofSHG44cellsaftertransfectionwereassessedbvCCK-8assayandFCMjncombinationwithannexinV-F
此文档下载收益归作者所有