資源描述:
《《肺癌相關(guān)抗原RNA轉(zhuǎn)染樹突狀細胞誘導(dǎo)細胞因子誘導(dǎo)的殺傷細胞殺傷活力的體外研究》.pdf》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、醫(yī)技雜志2015年7月第22卷箜2J0塑££墮£iges!Y21!:22N011·695·肺癌相關(guān)抗原RNA轉(zhuǎn)染樹突狀細胞誘導(dǎo)細胞因子誘導(dǎo)的殺傷細胞殺傷活力的體外研究湖南省懷化市第二人民醫(yī)院(41800O)劉伯軒戴北鴻向啟德廖東承高細強吳玉蘭周頻【摘要】目的研究NCI.H1975人肺腺癌細胞株相關(guān)抗原RNA轉(zhuǎn)染的人樹突狀細胞(DCs)在體外誘導(dǎo)細胞因子誘導(dǎo)的殺傷細胞(CIK)對人肺腺癌細胞的殺傷活力。方法使用血細胞單采機采集外周血單個核細胞(PBMCs)并利用密度梯度離心法純化獲得的單個核細胞,細胞培養(yǎng)瓶貼壁獲得單核細胞,添加重
2、組人粒細胞、巨噬細胞集落刺激因子(rhGM—CSF)和重組人白細胞介素.4(rhIL.4)誘導(dǎo)為未成熟DCs,提取NCI.H1975細胞總RNA轉(zhuǎn)染DCs后誘導(dǎo)為成熟DCs。轉(zhuǎn)染誘導(dǎo)后成熟DCs與PBMCs培養(yǎng)的CIK細胞混合培養(yǎng)后誘導(dǎo),再次與靶細胞混合培養(yǎng)以觀察殺傷活力。實驗分轉(zhuǎn)染肺癌相關(guān)抗原RNA的DC—CIK組、未轉(zhuǎn)染DC—CIK組及轉(zhuǎn)染空脂質(zhì)體DC—CIK組,分別采用流式細胞分析法檢測DC及CIK細胞表面抗原表達、采用CSFE腆化丙啶(PI)熒光雙標(biāo)法檢測3組殺傷腫瘤活性的差異。結(jié)果轉(zhuǎn)染相關(guān)抗原RNA組、未轉(zhuǎn)染組及轉(zhuǎn)染空
3、脂質(zhì)體組的DC及CIK細胞表面抗原表達明顯上調(diào),轉(zhuǎn)染相關(guān)抗原RNA組與其他2組對肺癌原代細胞殺傷活力明顯增強。結(jié)論肺癌相關(guān)抗原RNA轉(zhuǎn)染DC誘導(dǎo)CIK細胞對靶細胞的殺傷活力明顯增強,可為臨床應(yīng)用個體化DC.CIK細胞過繼免疫治療提供新的方法?!娟P(guān)鍵詞】樹突細胞;細胞因子誘導(dǎo)殺傷細胞;免疫療法,過繼;腺癌,細支氣管肺泡StudyoflungcancerassociatedantigenRNA-transfectedDC-inducedcellkiltingactivityofCIK/nvitroLiuBoxuan,DaiBeiho
4、ng,XiangQide,LiaoDongcheng,GaoXiqiang,WuYulan,Zhoun.PeoplesHospitalofHuaihuaC,HuI/M,/t418000,China【Abstract】objectiveToinvestigatetheNCI.H1975humanlungadenocarcinomacel1lineassociatedantigenRNA—transfectedhumandendriticcells(DCs)irtvitrocytokine—inducedkiller(CIK)act
5、ivityinducedkillercellstocancercells.MethodsUsingbloodcellapheresismachinecollectingperipheralbloodmononuclearcells(PBMCs)andusingmononuclearcellsbydensitygradientcentrifugationpurified,celcultureflasksadherentmononuclearcells,addingrecombinanthumangranulocyte—macrop
6、hagecolony—stimulatingfactor(rhGM—CSF)andrecombinanthumaninterleukin一4(rhlL一4)toinduceimmatureDCs,extractionoftotalRNANCI.H1975cellsweretransfectedDCsinducedtomatureDCs.Atiertransfectioni~ducematureDCsandPBMCsculturedCIKcellsinducedmixedculture,mixedculturewithtarget
7、cellsagaintoobservethedestructionofvitality.TheexperimentalpointsassociatedantigenRNA.transfectedDC.CIKgroupoflungcancer,non—transfectedDC—CIKgroupandtransfectedwithemptyliposomesDC—CIKgroupweredetectedbyflowcytometryanalysisDCandCIKcellsurfaceantigenexpression,using
8、CSFE/PIdoublestainingwasusedtodetectdifferencesinanti—tumoractivityofthethreegroups.ResultsRNA.a(chǎn)ssociatedantigentransfectedgroup,DC