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ID:17538887
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时间:2018-09-02
《rhGCSF对小鼠骨髓间充质干细胞的动员作用.doc》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、rhGCSF对小鼠骨髓间充质干细胞的动员作用作者:刘岐焕,程范军,陈龙,唐俊明,王家宁,高清平【摘要】为了研究rhGCSF体内应用对小鼠骨髓间充质干细胞(MSC)的动员作用,将30只小鼠随机分为2组:rhGCSF组和对照组,分别给予皮下注射rhGCSF80μg/(kg·d)和等量生理盐水,连续5天,在最后1次注射后分别于6,12和168小时取小鼠骨髓和外周血,以1×106单个核细胞(MNC)接种于12孔培养板14天,对形成的成纤维细胞集落(CFUF)进行计数,用胰蛋白酶消化后应用流式细胞术测定表面抗原并进行成脂,成骨诱导。结果表明:rhGCSF组骨髓形成的CFUF数
2、均较对照组明显增加(p<0.01)。6小时取材较12小时,168小时取材形成的CFUF数目多(p<0.01),12小时与168小时CFUF差异无统计学意义。流式细胞术检测骨髓CFUF显示CD34-、CD133-、CD90+、CD105+,骨髓CFUF具有成脂、成骨分化的能力。rhGCSF组6小时取材外周血具有类似骨髓的CFUF,出现的频率为(0.50±0.11)×10-6,与对照组比较差异有显著性(p<0.05)。结论:rhGCSF可使小鼠骨髓间充质干细胞增殖加速,但时间短暂,其高峰在rhGCSF应用5天后的6小时内。rhGCSF对小鼠间充质干
3、细胞也有动员能力,但作用较弱。【关键词】骨髓间充质干细胞EffectsofrhGCSFonMobilizationofMouseMesenchymalStemCellsAbstractToevaluatetheeffectsofrhGCSFonmobilizationofmesenchymalstemcells(MSCs)ofmousebonemarrowatdifferenttimepoint,thirtymicewererandomlydividedintorhGCSFtreatmentgroupandcontrolgroup.Themiceweresubcutaneo
4、uslyinjectedwithrhGCSFinadoseof80μg/kgorsalinefor5days.Thebonemarrowandperipheralbloodwereobtainedattimepointsof6,12,168hoursafterfinalinjectionofrhGCSForsaline.Bonemarrowmononuclearcells(BMMNCs)wereseededatdensityof1×106MNCsonto12wellplateforcultureexpansioninDMEMsupplementedwith10%FBS,an
5、dthenumberofcolonyformingunitfibroblast(CFUF)wascountedafter14days.ThecellswerecollectedbytrypsinizationandthesurfaceantigensCD34,CD133,CD90andCD105wereanalyzedbyflowcytometry.ThemultidifferentiationofMSCsweredoneinthecultureconditionofinducedadipocyteandosteocyte.PeripheralbloodMNCsexami
6、nationwassameasthebonemarrow.TheresultsindicatedthatthenumberofCFUFofbonemarrowinrhGCSFgroupwasmorethanthatincontrolgroup(p<0.01),thenumberofCFUFinrhGCSFgroupat6hourswasmorethanthatat12hoursand168hours,7respectively(p<0.01).TherewasnoobviousdifferencebetweenCFUFat12hoursandat168hou
7、rs(p>0.05).MSCswerepositiveforCD90,CD105andnegativeforCD34andCD133.MSCswerefoundtodifferentiateintoadipocyteandosteocyteinvitro.TheCFUFofPBMNCsobtainedandculturedinvitrointhesamecultureconditionscouldbeobservedaftertherhGCSFinjectionat6h
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