南方医科大学学报 ›› 2017, Vol. 37 ›› Issue (05): 614-.

• • 上一篇    下一篇

球状脂联素对卵巢微血管内皮细胞增殖、迁移及管状结构形成的影响

陈雷,卢小圣,李雅兰,毛周飞,肖銮娟,禹艳红   

  • 出版日期:2017-05-20 发布日期:2017-05-20

Effect of globular adiponectin on proliferation, migration and tube formation of ovarian microvascular endothelial cells

  • Online:2017-05-20 Published:2017-05-20

摘要: 目的分离并鉴定小鼠卵巢微血管内皮细胞,并利用卵巢微血管内皮细胞研究球状脂联素对小鼠卵巢血管新生的影响。 方法采用Percoll密度梯度离心法分离纯化小鼠卵巢微血管内皮细胞,并采用免疫荧光检测细胞表面的卵泡刺激素受体、黄体 生成素受体以及血管内皮细胞标记vWF;通过血管生成因子(VEGFA)处理检测卵巢微血管内皮细胞在Matrigel上的毛细管形 成特性。重组的球状脂联素蛋白处理卵巢微血管内皮细胞,通过MTS检测细胞增殖;细胞划痕愈合法检测细胞迁移;Matrigel 基质胶的血管形成,Western blot检测单磷酸腺苷活化蛋白激酶(AMPK)磷酸化激活。结果分离出的细胞表现为卵泡刺激素 受体阴性,黄体生成素受体阳性,vWF阳性,且VEGFA能够促进血管生长,具有卵巢特异的血管内皮生长特性。高剂量浓 度(1 μg/mL 和3 μg/mL)的重组的脂联素球状结构域蛋白处理后卵巢微血管内皮细胞数量分别增加(158.72±14.50)%和 (186.50±4.20)%,促进细胞增殖(P<0.01);高剂量浓度(1 μg/mL和3 μg/mL)的重组的脂联素球状结构域蛋白处理后卵巢微血管 划痕愈合率分别为(49.43±3.43)%(P<0.05)和(69.67±1.2)%(P<0.01);3 μg/mL的脂联素处理卵巢微血管内皮细胞形成的毛细 管状长度为对照组的7.63±0.66倍(P<0.01)。3 μg/mL的球状脂联素蛋白处理饥饿处理后的卵巢微血管内皮细胞培养15 min后 pAMPK/AMPK、30 min后pAMPK/AMPK显著高于未加入蛋白处理的对照(P<0.01)。Compound C抑制了球状脂联素促进的 卵巢微血管内皮细胞的管状结构形成及AMPK磷酸化激活。结论成功分离了卵巢微血管内皮细胞,球状脂联素蛋白能够通 过激活AMPK信号途径促进卵巢微血管内皮细胞的血管新生。

Abstract: Objective To analyze the effect of globular adiponectin on angiogenesis of ovarian microvascular endothelial cells (OMECs). Methods Mouse OMECs were isolated and purified by density gradient centrifugation with Percoll and identified by immunofluorescence analysis of follicle-stimulating hormone receptor (FSHR), luteinizing hormone receptor (LHR), and endothelial cell marker von Willebrand factor (vWF). The capillary-like tube formation of OMECs was determined by vascular endothelial growth factor A (VEGFA) treatment in Matrigel matrix. OMECs treated with recombinant globular adiponectin protein were examined for cell proliferation with MTS assay and cell migration with scratch wound healing assay, and capillary-like tube formation was tested in Matrigel matrix. Western blotting was performed to detect the effect of globular adiponectin on AMPK phosphorylation. Results The signals of LHR and vWF, but not that of FSHR, were detected in the isolated cells. VEGFA treatment of the cells induced capillary-like tube formation, indicating their properties of ovarian-specific endothelial cells. Treatment with 1 and 3 μg/mL of recombinant globular adiponectin significantly increased the number of OMECs by (158.72±14.50) % and (186.50±4.20)% (P<0.01) and resulted in scratch wound closure rates of (49.43±3.43)% (P<0.05) and (69.67±1.2) % (P<0.01) respectively. The cells treated with 3 μg/mL globular adiponectin formed a capillary-tube length 6.63± 0.66 folds greater than that formed by the control cells (P<0.01). Treatment of the cells with 3 μg/mL globular adiponectin for 15 and 30 min resulted in pAMPK/ AMPK ratios of 0.86 ± 0.08 and 0.66 ± 0.13, respectively significantly higher than that in the control cells (0.13 ± 0.12, P<0.01). Compound C obviously suppressed the tube formation and AMPK phosphorylation induced by globular adiponectin. Conclusion Globular adiponectin promotes angiogenesis of OMECs through activation of the AMPK signal pathway.