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时间:2019-01-31
《wnt3a对小鼠破骨细胞分化调控的影响》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、第35卷第5期第三军医大学学报Vol.35,No.54122013年3月15日JThirdMilMedUnivMar.152013论著文章编号:10005404(2013)05041204Wnt3a对小鼠破骨细胞分化调控的影响1,21,21,21,21,31李红丽,申利红,芦永良,冯涛,黄佳(400016重庆,重庆医科大学:分子医学与肿瘤研究中心,生物化23学与分子生物学教研室,病理生理学教研室)[摘要]目的探讨Wnt3a对小鼠破骨细胞分化调控的影响。方法将细胞分为4组:阴性对照组(即空白组)、实验对照组(感染AdGFP组)、阳性对照
2、组(50ng/mlRANKL诱导组)、实验组(感染AdWnt3a组)。分别给予处理因素后常规细胞培养6d,通过酒石酸抗酸性磷酸酶(TRAP)染色观察破骨细胞的分化成熟情况;Westernblot检测TRAP、CathepsinK蛋白的表达;分别于处理因素后3、6、9d提取细胞总RNA,荧光定量Realtime(RTPCR)检测核因子κB受体(RANK)、抗酒石酸酸性磷酸酶(TRAP)、组织蛋白酶K(CathepsinK)、基质金属蛋白酶9(MMP9)基因的表达。结果TRAP染色显示50ng/mLRANKL诱导组能成功诱导RAW264.
3、7成多核(核≥10),空白组和AdGFP组有少量多核细胞(3≤核≤5),AdWnt3a组为单核有个别双核;Westernblot检测显示AdWnt3a组TRAP、CathepsinK蛋白表达降低,差异具有统计学意义(P<0.05);RTPCR检测AdWnt3a组能下调RANK、TRAP、CathepsinK、MMP9基因的表达。结论Wnt3a能抑制RAW264.7分化成成熟的破骨细胞。[关键词]Wnt3a,RAW264.7,RANKL,TRAP[中图法分类号]R322.71;R329.28;R394.2[文献标志码]AEffecto
4、fWnt3aonregulationofmouseosteoclastdifferentiation1,21,21,21,21,31LiHongli,ShenLihong,LuYongliang,FengTao,HuangJiayi(CenterInstituteofMolecularMedicineand23TumorResearch,DepartmentofBiochemistryandMolecularBiology,DepartmentofPathophysiology,CollegeofBasicMedicalSciences,Cho
5、ngqingMedicalUniversity,Chongqing,400016,China)[Abstract]ObjectiveToexploretheregulatoryroleofWnt3ainthedifferentiationofmouseosteoclasts.MethodsCellsweredividedintoanegativecontrolgroup(blank),anexperimentalcontrolgroup(AdGFPtransfection),apositivecontrolgroup(50ng/mLRANK
6、Linduction),andanexperimentalgroup(AdWnt3atransfection).Allthecellswereconventionallyculturedfor6d.Tartrateresistantacidphosphatase(TRAP)stainingwasappliedtoobserveosteoclastdifferentiationandmaturation,andWesternblotanalysiswasappliedtodetecttheproteinexpressionofTRAPandc
7、athepsinK.TotalcellularRNAwasextractedaftertreatmentfor3,6and9d,andquantitativerealtimePCRwasappliedtodeterminetheexpressionofreceptoractivatorofnuclearfactorκB(RANK),TRAP,cathepsinKandmatrixmetalloproteinase(MMP)9.ResultsTRAPstainingshowedthat50ng/mlRANKLcouldsuccessfull
8、yinduceRAW264.7cellsintomultinucleatedcells(nuclear≥10).Afewmultinucleatedc
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