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1、脂肪干细胞的分离提取、鉴定及与脂肪颗粒的混合移植研究[摘要]日的分离提取脂肪干细胞(ADSCs),对其进行成脂、成骨的鉴定,并与脂肪颗粒混合移植,观察移植后的脂肪组织的存活情况。方法取大鼠腹股沟脂肪,磷酸盐缓冲液清洗,0.1%I型胶原酶37°C消化1h,离心,取沉淀,用含10%血清的DMEM培养基进行培养、传代,取第3代ADSCs用于成脂、成骨鉴定;另取第3代ADSCs用于移植,分为两组:ADSCs(密度为5X107/mL)0.9mL+脂肪颗粒0.6mL组、脂肪颗粒1.5mL组,分别移植于大鼠背部两侧,共移植24只大鼠,分别于2周、1、3个月时脱
2、颈椎处死8只大鼠,再取出背部脂肪组织。结果大鼠ADSCs成脂、成骨诱导后,经油红0、茜素红染色呈阳性,移植2周、1个月时,两组取出的脂肪组织的体积变化不大;但移植3个月后,取背部脂肪组织,称重:脂肪颗粒1.5n±组平均重量为(0.4551±0.0024)g,而ADSCs(密度为5X107/mL)0.9mL+脂肪颗粒0.6mL组的平均重量为(0.7798±0.0033)g,两组脂肪组织的重量差异有统计学意义(P<0.05)o结论原代分离、培养的ADSCs生长状况良好,具有向成脂、成骨分化的能力,与脂肪颗粒混合移植后组织的存活率高,并能够改善脂肪颗粒
3、单独移植时的液化吸收情况。[关键词]脂肪干细胞;成脂诱导;成骨诱导;移植[中图分类号]R329[文献标识码]A[文章编号]1673-7210(2014)02(a)-0009-05Isolation,cultureandtransplantationofratadipose-derivedstemcellsYUANZhijianlHEWenjuanlZHOUHonglJIANGMeiling21.WuxiHigherHealthVocationalSchool,JiangsuProvince,Wuxi214028,China;2.ChinaPhar
4、maceuticalUniversity,JiangsuProvince,Nanjing210009,China[Abstract]ObjectiveToisolateandculturetheratadipose-derivedstemcelIs(ADSCs)andtoidentificateitsmultipotentdifferentiationabilityandtoobservethesurvivaloftransplantationofADSCswithadiposecomparedwithadiposeinthebackofther
5、ats.MethodsAdiposetissuewereobtainedfrominguinalregionandwashedinPBS,thendigestedwith0.1%collagenasetypeIat37°Cfor1hfollowedbycentrifugationandADSCspel1etwasresuspendedinDMEMwith10%fetalbovineserum(FBS)andseededinflasks,cellsatpassages3wereusedforadipogenicdifferentiationando
6、steogenicdifferentiation,bothsidesoftwenty-fourratswerereceivedsubcutaneously5X107/mLADSCsresuspendedin0.9mLofDMEMmedium+0.6mLofadiposeand1.5mLofadipose,tookouttheadiposetissueofeightratsaftertwoweeks,onemonthandthreemonthsrespectively.ResultsADSCsstainedpositivelyforoilred-0
7、andalizarinred,twoweeksandonemonthlater,theweightofadiposehadnodifferencewitheachother,however,afterthreemonths,theaverageweightof1.5mLofadiposegroupandthe5X107/mLADSCsresuspendedin0.9mLofDMEMmedium+0.6mLofadiposegroupwere(0.4551±0.0024)gand(0.7798±0.0033)grespectively,thus,t
8、hereweresignificantdifferencesbetweenthetwogroups(P[Keywords]Adipose