张凌志,等Transwell小室筛选高侵袭性c6细胞MMP一2和TIMP一2的表达Transwell小室筛选高侵袭性C6细胞MMP一2和TIMP一2的表达《基础·临床研究l张凌志,邸菁,王运杰,赵昕。,张朝东1.中国医科大学附属第一医院(神经外科:张凌志,王运杰;神经内科:张朝东),辽宁沈阳1100012.中国医科大学人体解剖学教研室,辽宁沈阳1100013.沈阳军区总医院心内科,辽宁沈阳110014ExpressionsofMMP一2andTIMP-2in06cellswithhighinvasiveabilityselectedthroughTranswellchambersZHANGLing—zhi.DIJing.WANGYunjie,ZHAOXin。.ZHANGChaodong1.FirstAffiliatedHospitalofChinaMedicalUniversity,Shenyang110001.P.R.China2.DepartmentofAnatomy,ChinaMedicalUniversity,Shenyang110001,P.R.China3.DepartmentofCardiology,GeneralHospitalofShenyangMilitaryCommand,Shenyang110014,P.R.China【摘要】目的:通过观察Transwell小室筛选的高侵袭性c6细胞中组织金属蛋白酶抑制剂一2(tissueinhibitorofmetalloproteinase-2.TIMP-2)的表达,探讨基质金属蛋白酶一2(matrixmetalloproteinase-2,MMP一2)及TIMD2在胶质瘤侵袭中的作用机制。方法:通过Transwell小室筛选出一种更具有侵袭能力的C6一C。细胞,用细胞损伤愈合实验及Transwell小室评价其侵袭转移能力,用明胶酶谱、反向明胶酶谱及Westernblot等方法来检测MMP-2和TIMP-2的表达。结果:与同源C6细胞相比,这种体外筛选的C6一C。侵袭能力增加3倍多,增强了快速的单层细胞损伤愈合能力,MMP-2激活水平增加8O,TIMP2的蛋白表达水平增长2倍。结论:MMP一2的激活水平增加与胶质瘤的侵袭转移能力相关,并与TIMP-2的表达增高相关。TIMP-2表达增加促进了MMP一2的激活和细胞侵袭。肿瘤防治杂志,2005,12(10):742—745[ABSTRACT]OBJECTIVE:Toexploretherolesofmatrix-metallo—proteinase-2(MMP2)andtissueinhibitorofmetalloproteinase-2(TIMP-2)ingliomainvasionandmotilitybydetectingtheexpressionofTIMP-2inC6cellsselectedthroughTranswellchambers.NⅡH—OIlS:Transwellchamberswereusedtoselectforamorepotentlyinva—sivesubpopulationofC6cells.BothwoundhealingandTranswellinva—sionassaywereusedtoassaytheabilityoftheselectedinvasiveC6cells、ExpressionsofMMP一2andTIMP-2weredetectedbygelatinzy—mography,reversezymographyandWesternblot.RESULTS:Thesta—blepopulati...