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ID:30973306
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时间:2019-01-04
《htr反义寡核苷酸对结直肠癌sw480细胞的凋亡及凋亡诱导因子表达的影响》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、hTR反义寡核苷酸对结直肠癌SW480细胞的凋亡及凋亡诱导因子表达的影响李靓,李洋,王继见(400010重庆,重庆医科大学附属第二医院普外科)[摘要]目的探讨封闭人端粒酶RNA功能区的反义寡核苷酸(humantelomeraseRNAantisenseoligonucleotide,hTRASODN)对结直肠癌SW480细胞凋亡及凋亡诱导因子(apoptosisinducingfactor,AIF)表达的影响。方法通过脂质体将hTRASODN1次/d,连续3d转染入人结直肠癌SW480细胞,以未加ASODN的脂质体空白组及脂质体
2、转染的正义组为对照。荧光显微镜观察转染情况,流式细胞仪测定转染后SW480细胞的凋亡率,RT-PCR方法测定转染后AIF的表达情况。结果hTRASODN转染细胞后,倒置显微镜下观察各组细胞,细胞内有绿色荧光均匀分布表示转染良好。流式细胞仪测定转染24、48、72h后,各实验组凋亡率分别为:空白组(3.07±0.11)%、(3.71±0.63)%、(4.23±0.41)%,正义组(4.28±0.41)%、(4.49±0.56)%、(5.13±0.56)%),反义组(13.11±0.32)%、(22.04±0.21)%、(16.71
3、±0.82)%。反义组分别与空白组、正义组比较,差异有统计学意义(P<0.05);而正义组与空白组比较,差异无统计学意义(P>0.05)。空白组、正义组、反义组PCR产量分别为(0.1527±0.0021)、(0.1580±0.0078)、(0.3683±0.0109)。反义组分别与空白组、正义组比较,差异有统计学意义(P<0.05);正义组与空白组比较,差异无统计学意义(P>0.05)。结论hTRASODN具有明显的促进凋亡,抗肿瘤作用。[关键词]hTR;反义寡核苷酸;结直肠癌;凋亡;AIFDetectionofcellapo
4、ptosis,andexpressionofapoptosisinducingfactorincoloncarcinomacellsSW480treatedwithhTRantisenseoligodeoxynucleotideLiliangLiYangWangJijian(400010Chongqing,ChongqingMedicalUniversity:Generalsugeryofthesecondhospital)[Abstract]ObjectiveToexploretheeffectsofthehumantelom
5、eraseRNA(hTR)antisenseoligodeoxynueleotide(ASODN)oncellapoptosis,andtheexpressionofapoptosisinducingfactor(AIF)ofhumamcoloncancerSW480ce11.MethodsBythemethodofliposometransfection,hTRantisenseoligodeoxynueleotidewastransfectedintohumancoloncancerSW480cell,whatonceada
6、yandcontacttransfectionthreedays,andthecontrastsarethegroudwithoutASODNandthesenseoligodeoxynueleotidebyliposometransfection.Observingcircumstancesoftransfectionbyfluorescencemicroscopy,determinationtheapoptosisofSW480cellaftertransfectionbyflowcytometry,anddetermina
7、tiontheexpressionofAIFaftertransfectionbyRT-PCR.ResultsAfterhTRantisenseoligodeoxynueleotidetransfectedintocells,observedeverygroupcellsbyinvertedmicroscope,it'sgoodtransfectionforwhichhadgreenfluorescentequallydistributedintocells.After24、48、72h,menruratedthetransfe
8、ctionbyflowcytometry,theapoptoticpercentageofeverygroupseparate:theblankgroup(3.07±0.11)%、(3.71±0.63)%、(4.23±0.41)%,thesensegroup(4
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