欢迎来到天天文库
浏览记录
ID:34387380
大小:640.64 KB
页数:5页
时间:2019-03-05
《k-ras抗原致敏的dc诱导ctl对胰腺癌体内杀伤活性的研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、2010年第37卷第8期国肿瘤临421·基础研究·K—ras抗原致敏的DC诱导0TL对胰腺癌体内杀伤活性的研究米谭广徐立①方艳秋②陶钢③王忠裕谭岩②摘要目的:研究K—ms多肽的致敏树突状细胞(DC)活化的特异性细胞毒性T淋巴细胞(CTL)对胰腺癌的体内外杀伤作用。方法:联合应用粒细胞一巨噬细胞集落刺激因子和白细胞介素一4诱导培养外周血DC。表达K—ras突变体的胰腺癌细胞株全瘤、单纯K—ras突变体多肽和K—ras突变体表位肽阳离子纳米颗粒分别致敏DC。致敏DC刺激T淋巴细胞得到肿瘤抗原特异的细胞毒性T淋巴细胞(CTL)。Patu8988、SW1
2、990细胞系制备荷瘤裸鼠模型评价CTL体内抗肿瘤活性。结果:负载全瘤抗原的DC其诱导产生的CTL对胰腺癌有较好的抑制,负载单纯K—ras(12一Va1)突变体多肽、K—ras(12一Va1)突变体表位肽阳离子纳米颗粒的DC其诱导产生的CTL对表达K—ras(12一Va1)突变体阳性(Patu8988)的胰腺癌有较特异的抑制作用,而对K—ras(12一Va1)突变体阴性(SW1990)的胰腺癌的抑制作用与对照组比较无显著性差异。结论:负载肿瘤抗原的DC诱导的CTL可显著提高对荷瘤裸鼠的生存时间,抑制肿瘤的生长速度,并显示其可增加抗肿瘤特异性。关键词
3、胰腺癌树突状细胞K—i'aS多肽细胞毒T淋巴细胞doi:10.3969~.issn.1000-8179.2010.08.001Anti-tumorEffectofSpecificCytotoxicTLymphocytesActiviatedbyDendriticCellsPulsedwithK-rasAntigenonPancreaticCancerTANGuang’,XULi,FANGYanqiu。,TAOGang,WANGZhongyu’,TANYan。Correspondingauthor:TANGuang,E—mail:tanguang0
4、09@sina.corn’DepartmentofGeneralSurgery,TheFirstAffiliatedHospitalofDalianMedicalUniversity,Dalian116011,ChinaDepartmentofGeneralSurgery,TheSecondHospitalofJilinUniversity,Changchun130021,ChinaCentralLaboratoryofTheFirstHospitalofJilinUniversity,Changchun130021,ChinaThe210thH
5、ospitalofPLA,Dalian116021,ChinaGrantsuppo~:NationalNaturalScienceFoundationofChina(39470739)AbstractObjective:Toinvestigatetheanti—tumorefectofcytotoxicTlymphocytes(CTLs)activatedbydendriticcells(DCs)pulsedwithK—rasantigen.Methods:DCsweregeneratedfr0mPBMCinthepresenceofGM-CSF
6、andIL_4invitro.DCsweresensitizedwithpancreaticcancercelllineexpressingK-rasmutant,K—ras(12-Va1)mutantpeptide,K-ras(12-Va1)mutantpeptidewiththesurfaceofcationicnanoparticle.ThematureDCswerecoculturedwithautologousTcellstoobtainantigenspecificCTL.Theanti—tumoractivityofCTLinviv
7、owasevaluatedinBALB/cnudemicebearingPatu8988(K—ras+)andSWl990(K—ras-)pancreaticcancer.Results:CTLscoculturedwithDCswiththewholetumorantigensignificantlyinhibitedthegrowthoftransplantedpancreaticcancer(Patu8988andSW1990)innudemice.InvivoexperimentsshowedthatDCswithK—ras(12一Va1
8、)mutantpeptideandK-rasmutantpeptidewiththesurfaceofcationicnanoparti
此文档下载收益归作者所有