目的:探讨联合培养根尖牙乳头干细胞(stem cells from the apical papilla,SCAPs)和人脐静脉血管内皮细胞(human umbilical vein endothelial cells,HUVECs)对牙髓组织血管形成能力的影响。方法:分别使用α-MEM培养基和成骨、成脂、成...目的:探讨联合培养根尖牙乳头干细胞(stem cells from the apical papilla,SCAPs)和人脐静脉血管内皮细胞(human umbilical vein endothelial cells,HUVECs)对牙髓组织血管形成能力的影响。方法:分别使用α-MEM培养基和成骨、成脂、成神经诱导培养基处理SCAPs,采用油红O染色、茜素红染色、βIII-Tubulin免疫荧光染色,分别检测SCAPs的成脂、成骨和神经向分化能力。取单独SCAPs、HUVECs细胞以及联合培养SCAPs和HUVECs细胞进行小管形成实验,分别在3、6、9 h检测各组小管形成的长度、节点数目和结合区面积。采用SPSS16.0软件包对数据进行统计学分析。结果:染色结果显示,实验组SCAPs形成了更多的矿化结节、红色脂滴和神经样细胞。小管形成实验结果表明,联合培养组细胞可以更快地形成类血管状结构,差异显著。结论:SCAPs具有成骨、成脂和神经向诱导分化能力,联合培养SCAPs和HUVECs可以加速血管结构的形成。展开更多
AIM： To explore the possibility of human umbilical cord mesenchymal stem cells（h UCMSCs）, human umbilical vein endothelial cells（h UVECs）, human dental pulp stem cells（h DPSCs） and human periodontal ligament st...AIM： To explore the possibility of human umbilical cord mesenchymal stem cells（h UCMSCs）, human umbilical vein endothelial cells（h UVECs）, human dental pulp stem cells（h DPSCs） and human periodontal ligament stem cells（h PDLSCs） serving as feeder cells in co-culture systems for the cultivation of limbal stem cells.METHODS： Different feeder layers were cultured in Dulbecco＇s modified Eagle＇s medium（DMEM）/F12 and were treated with mitomycin C. Rabbits limbal stem cells（LSCs） were co-cultured on h UCMSCs, h UVECs, h DPSCs, h PDLSCs and NIH-3T3, and then comparative analysis were made between each group to see their respective colony-forming efficiency（CFE） assay and immunofluorescence（IPO13,CK3/12）.RESULTS： The efficiency of the four type cells in supporting the LSCs morphology and its cellular differentiation was similar to that of NIH-3T3 fibroblasts as demonstrated by the immunostaining properties analysis, with each group exhibiting a similar strong expression pattern of IPO13, but lacking CK3 and CK12 expression in terms of immunostaining. But h UCMSCs, h DPSCs and h PDLSCs feeder layers were superior in promoting colony formation potential of cells when compared to h UVECs and feedercell-free culture.CONCLUSION： hUCMSCs, hDPSCs and hPDLSCs can be a suitable alternative to conventional mouse NIH-3T3 feeder cells, so that risk of zoonotic infection can be diminished.展开更多
基金Supported by the Project Plan of Science and Technology Assistance in Xinjiang Autonomous Region(No.201491171)
文摘AIM： To explore the possibility of human umbilical cord mesenchymal stem cells（h UCMSCs）, human umbilical vein endothelial cells（h UVECs）, human dental pulp stem cells（h DPSCs） and human periodontal ligament stem cells（h PDLSCs） serving as feeder cells in co-culture systems for the cultivation of limbal stem cells.METHODS： Different feeder layers were cultured in Dulbecco＇s modified Eagle＇s medium（DMEM）/F12 and were treated with mitomycin C. Rabbits limbal stem cells（LSCs） were co-cultured on h UCMSCs, h UVECs, h DPSCs, h PDLSCs and NIH-3T3, and then comparative analysis were made between each group to see their respective colony-forming efficiency（CFE） assay and immunofluorescence（IPO13,CK3/12）.RESULTS： The efficiency of the four type cells in supporting the LSCs morphology and its cellular differentiation was similar to that of NIH-3T3 fibroblasts as demonstrated by the immunostaining properties analysis, with each group exhibiting a similar strong expression pattern of IPO13, but lacking CK3 and CK12 expression in terms of immunostaining. But h UCMSCs, h DPSCs and h PDLSCs feeder layers were superior in promoting colony formation potential of cells when compared to h UVECs and feedercell-free culture.CONCLUSION： hUCMSCs, hDPSCs and hPDLSCs can be a suitable alternative to conventional mouse NIH-3T3 feeder cells, so that risk of zoonotic infection can be diminished.
