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ID:36536933
大小:62.00 KB
页数:18页
时间:2019-05-11
《CyclinE2和Survivin在急性白血病的表达及其相关性》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、CyclinE2和Survivin在急性白血病的表达及其相关性作者:王颖,徐世荣,林凤茹,郭晓楠,任金海【摘要】为了解细胞周期蛋白E2(cyclinE2)和存活蛋白(survivin)在急性白血病中基因表达及两者间的相关性,采用逆转录-聚合酶链反应的方法检测了84例成人急性白血病患者(16例复发患者,60例初治患者和8例持续缓解患者)和20例正常人的cyclinE2和survivinmRNA的表达。结果表明:①cyclinE2在急性白血病中表达的阳性率(70.24%)高于对照组(0%);survivin在急性白血病中表达的阳性率(72.62%)高于对照组(30%)
2、;②在急性白血病中cyclinE2的表达与survivin的表达呈正相关性,r=0.65;③cyclinE2阳性组缓解率(55.81%)低于cyclinE2阴性组(88.24%),cyclinE2阳性组复发率(41.67%)高于阴性组(20%);复发组cyclinE2表达率在三组中最高,持续缓解组cyclinE2表达率在三组中最低,④cyclinE2在急性髓系白血病患者表达率(59.32%)低于急性淋巴细胞白血病患者的表达率(96%);与发病时白细胞计数未见有统计学意义的相关。结论:首次证实cyclinE2在急性白血病中有异常表达,且对临床预后有不良影响;cycl
3、inE2在急性白血病中的表达与survivin有正相关,提示cyclinE2在急性白血病中有可能作为一种微小残留病变的检测指标。18【关键词】存活蛋白 Asamalignanthemophaty,acuteleukemia(AL),especially,acutelymphocyticleukemia(ALL)underwentahighrelapserateandashortdisease-freesurvival(DFS),inspiteoftheimprovementinclinicaloutcomebenefitedfromthedevelopmento
4、fhematopoieticstemcelltransplantation(HSCT)andchemicaltherapy.PreventingrelapseandprolongingDFSstillisthefocusofALtherapy.Minimalresidualdisease(MRD)becameaneffectiveindicationforthefoundationofpost-remissiontherapyregulationsincetheroutinemorphologicalexaminationoftheperipheralblooda
5、ndbonemarrowsamplefromtheremissionpatientwasnormal.ButthefusiongenesuchasAML1/MTG8andPML/RARαasMRDmarker,wasonlyusedinM2,M3,soitisvaluabletosearchanothernewMRDmarkerforleukemia.Ontheotherhand,RNAinterference(RNAi)asanewandprospectivegenetherapyforcancerhasbecomeanewfocusofthestudyofAL
6、therapy[1].Searchingforaneffectivenewtargetforatumor-specificRNAiisworthdevelopingforleukemiatherapy.Recently,asatypeofG1cyclin,cyclinE2wasfoundouttobethepotentialmarkerof18tumorssinceitpresentedapositiveexpressioninthecelllinesofsolidtumorsandanegativeexpressioninproliferatingnormalc
7、ells[2].However,therehasbeennoreportonitsexpressionandroleinAL.InordertofindouttheroleofcyclinE2intheprogressionandclinicaloutcomeofAlpatients,reversetranscriptionpolymerasechainreaction(RT-PCR)isadoptedtotesttheexpressionofcyclinE2andsurvivinmRNAin84adultpatientswithAL,20normalperson
8、sasco
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