Corning® CellBIND®表面培养皿促进脐带源间充质干细胞生长

摘要

背景：培养体系微环境影响干细胞体外扩增，寻找有效的促进细胞贴壁和增殖的培养方法尤为重要。　　目的：比较不同细胞培养材质对细胞体外扩增的影响。　　方法：将5.0×104培养的人脐带源间充质干细胞分别接种于包被/不包被鸟氨酸Corning®聚苯乙烯培养皿或Corning® Cel BIND®表面培养皿中培养，分别观察细胞的贴壁、增殖状态、与细胞黏附和细胞增殖有关的蛋白的表达及细胞标志物的表达。　　结果与结论：与其他类型的培养皿相比，包被多聚鸟氨酸的Corning® Cel BIND®表面培养皿在24 h内能够促进人脐带源间充质干细胞贴壁，同时也能使培养的人脐带源间充质干细胞较早的进入对数生长期，细胞增殖数量相对较多，虽然对人脐带源间充质干细胞表面标志物CD73， CD90和CD105的表达没有影响，但能促进细胞中黏附蛋白的表达。且Corning® Cel BIND®表面培养皿较Corning®聚苯乙烯培养皿更能促进人脐带源间充质干细胞的贴壁和增殖，同时也对细胞表型的表达无影响。提示Corning® Cel BIND®表面培养皿能够促进细胞吸附，增加细胞数量，且对细胞周期蛋白以及细胞表型的表达没有影响，且包被多聚鸟氨酸能够进一步促进细胞的贴壁和增殖，并稳定表达人脐带源间充质干细胞的细胞表型。%BACKGROUND:Stem cells expansion technology in vitro is affected by the microenvironment of the culture system. So, to find an effective method is particularly important to promote celladherent and growth. OBJECTIVE:To compare the effects of different culture media on cellexpansion. METHODS:Human umbilical cord mesenchymal stem cells at a density of 5.0×104 cells/cm2 were inoculated into Corning® polystyrene culture dishes coated with or without poly-L-ornithine and Corning® cellBIND culture dishes. celladhesion and proliferation were observed, and expressions of celladhesion proteins and cellmarkers were detected. RESULTS AND CONCLUSION:celladhesion was promoted when cells were cultured in Corning® cellBIND® Surface medium coated with poly-L-ornithine for 24 hours, and the cultured cells grew at the logarithmic phase. The cellproliferation was also enhanced, and the cells expressed celladhesion protein but not the cellmarkers of CD73, CD90, CD105. Corning® cellBIND® Surface medium was superior to Corning® polystyrene culture medium in the improvement of celladhesion and proliferation. Additional y, both of these two media showed no influence on cellphenotype. These findings indicate that Corning® cellBIND® Surface medium can promote celladhesion and proliferation, but shows no effects on cyclin and cellphenotype. This medium coated with poly-L-ornithine can further accelerate celladhesion and proliferation, and stably express cellphenotype of human umbilical cord mesenchymal stem cells.