目的:通过观察apelin-13对体外培养的猴脉络膜/视网膜内皮细胞(RF/6A)增殖、迁移和毛细血管样管腔形成的影响,探讨apelin-13是否对视网膜新生血管的发生具有促进作用. 方法:取生长状况良好的RF/6A细胞,分为对照组、低剂量组(0.1μmol/L apelin-13)和高剂量组(1μmol/L apelin-13).培养细胞24h后采用MTT法检测细胞增殖,细胞划痕法检测细胞迁移,基质胶法检测管腔形成. 结果:不同浓度apelin-13作用24h的细胞增殖强于对照组,差异有统计学意义(P<0.05),不同浓度apelin-13组RF/6A细胞24h的迁移距离大于对照组,差异有统计学意义(P<0.05),不同浓度apelin-13组毛细血管样管腔形成数明显多于对照组,差异有统计学意义(P<0.05),且细胞增殖、迁移和管腔形成均随着apelin-13浓度的升高而增加.结论:Apelin-13能够明显促进RF/6A细胞的血管生成过程,提示apelin-13是一种促视网膜新生血管形成的重要因子.%AIM: To investigate the effects of apelin-13 on proliferation, migration and capillary-like tube formation of a monkey choroid / retinal endothelial cell line, RF/6A, to clarify whether apelin-13 could promote retinal angiogenesis in vitro.METHODS: RF/6A cells in good conditions were administrated with DMSO (the control group), apelin-13 at 0.1μmol/L (low dose group) or apelin-13 at 1μmol/L (high dose group).Cell proliferation, migration and capillary-like tube formation were detected by using the MTT assay, scratch assay and matrigel assay, respectively, at 24h after plating the cells.RESULTS: Cell proliferation was promoted in both low and high dose apelin-13 groups compared to the control cells (P<0.05);the cell migration distance of both apelin-13 groups was significantly greater than that of the control group (P<0.05);and the number of capillary-like tube structures of both apelin-13 groups was significantly larger than that of the control cells (P<0.05).In addition, cell proliferation, migration and tube formation increased as the concentration of apelin-13 increased.CONCLUSION: Apelin-13 could obviously promote the angiogenesis capacity of RF/6A cells, suggesting that apelin-13 was an important pro-angiogenic factor in retinal endothelial cells.
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