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时间:2018-09-13
《人骨髓基质细胞软骨诱导分化及其与细胞载体体外复合》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、第18卷第3期汕头大学医学院学报Vol.18No.32005JournalofShantouUniversityMedicalCollege2005人骨髓基质细胞软骨诱导分化及其与细胞载体体外复合胡军1),张爱斌1),陈永松1),杨佩璇1),宋建新1),刘晓岚2)(1汕头大学医学院第一附属医院骨科,广东汕头515041;2第一人民医院脊柱外科,湖南郴州423000)[摘要]目的:观察出生后人骨髓基质细胞(hBMSCs)在体外培养条件下增殖与分化的特点,探讨其向成软骨方向分化及机制。研究诱导细胞体外与PDLLA/
2、壳聚糖多孔材料复合。方法:密度梯度离心法进行hBMSCs体外培养。应用传五代细胞,经化学限定培养基诱导细胞,设实验对照组。采用倒置显微镜观察细胞增殖及形态变化,甲苯胺蓝染色观察诱导细胞合成细胞外基质中的蛋白多糖,RT-PCR检测Ⅱ型胶原mRNA的表达。将诱导的细胞分别与多孔羟基磷灰石、PDLLA/壳聚糖多孔材料复合,应用扫描电镜观察其在细胞载体表面的生长情况。结果:传五代hBMSCs经化学限定培养基诱导后转化成圆形肥大细胞,甲苯胺蓝染色阳性,Ⅱ型胶原mRNA表达与对照组比较有统计学意义。扫描电镜发现hBMSCs
3、在PDLLA/壳聚糖多孔材料表面增殖良好并分泌大量细胞基质。结论:体外培养hBMSCs经化学限定培养基诱导后可向成软骨方向分化,可作为软骨组织工程种子细胞。PDLLA/壳聚糖多孔复合材料是组织工程良好的细胞载体,有利于细胞的黏附与增殖。[关键词]人骨髓基质细胞;成软骨分化;组织工程;细胞培养[中图分类号]Q813.11;R318.1[文献标识码]A[文章编号]1007-471(62005)03-0135-04TheHumanBoneMarrowStromalCellsDifferentiateintoChond
4、roblastandCultureonPDLLA/ChitosanandHydroxyapatiteScaffoldinvitroHUJun1,ZHANGAi-bin1,CHENYong-song1,YANGPei-xuan1,SONGJian-xin1,LIUXiao-lan2(1DepartmentofOrthopaedics,TheFirstAffiliatedHospital,ShantouUniversityMedicalCollege,Shantou515041,China;2Departmento
5、fSpineSurgery,TheFirstPeople'sHospital,Chenzhou423000,China)[Abstract]Objective:Toexaminethepropertyandproliferationabilityofprimaryculturehumanbonemarrowstromalcell(shBMSCs),andtoinvestigatetheeffectofhBMSCsdifferentiationintochondroblast.Experimentonthepos
6、sibilityofPDLLA/chitosanporousmaterialaschondroblastmatrixscaffold,steptorevealtheroleforPDLLA/chitosan.Meth-ods:hBMSCsweresourceofthebonemarrowcollectedfromhealthyhumandonorsandculturedaccordingtoMajumdar’smethodinvitro,thecellsoffifthsubculturewerecultured
7、bychemicaldefinitionmedium,examinedbyinvertmicro-scope.ToluidinebluestainandRT-PCRwereusedtotestthetypeⅡcollagenmRNA.ToimplanthBMSCsoffifthgenerationonPDLLA/chitosanandHAwasobservedbyscanningelectronmicroscope.Results:ThehBMSCscouldbedifferentiatedintochondr
8、oblast,andRT-PCRshowedtheycouldsynthesistypeⅡcollagen.Scanningelectronmicro-scopeshowedthecellsproliferatedquicklyinPDLLA/chitosanscaffold.Conclusion:hBMSCscankeepproliferationanddifferentiation
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