神经纤毛蛋白2促进胰腺神经内分泌肿瘤血管生成作用的研究

目的 探讨神经纤毛蛋白2(NRP2)调控胰腺神经内分泌肿瘤(PNETs)血管生成的作用及意义.方法 干扰胰腺神经内分泌肿瘤BON-1细胞系NRP2表达,分别用对照组和干扰组的BON-1细胞培养上清液处理人脐静脉内皮细胞(HUVEC),CCK-8检测其细胞增殖,Tanswell检测迁移,小管形成实验检测其促血管生成.结果 CCK-8检测显示对照组和干扰组培养上清液处理的HUVEC细胞组间增殖差异无统计学意义(P>0.05):对照组吸光度为0.35±0.04,干扰组为0.32±0.04.Transwell实验显示干扰组细胞培养上清液处理的HUVEC细胞侵袭能力较对照组减弱,对照组(203±13)个/孔,干扰组(100±10)个/孔(P＜0.01);小管形成实验显示干扰组细胞培养上清液处理的HUVEC细胞小管形成减少,对照组为40±5,干扰组为24±3(P＜0.01).结论 干扰BON-1细胞NRP2表达可抑制与其共培养的HUVEC细胞的成管能力,提示NRP2可能具有促进PNETs相关血管生成的作用,是PNETs新的潜在治疗靶点.

Study of pro-angiogenesis effect of neuropilin-2 on pancreatic neuroendocrine tumors

Objective To investigate the role and significance of neuropilin-2(NRP2)for regulating the angiogenesis of pancreatic neuroendocrine tumors(PNETs).Methods The NRP2 expression in pancreatic neuroendocrine tumer BON-1 cell line was intevened.The BON-1 cells cultural supernatants in the control group and interference group were used to treat human umbilical vein endothelial cells(HUVEC).CCK-8 was used to detect the cell proliferation,Transwell was used to detected the cell migration and the tubule formation test was used detect the pro-angiogenesis.Results The CCK-8 detection showed that there was no statistically significant difference in the supernatant treated HUVEC proliferations between the interference group and control group medium(P>0.05):the absorbancy in the control group was 0.35±0.04,while which in the interference group was 0.32±0.04.The Transwell test showed that the invasion ability of HUVEC treated with cultural supernatants in the interference group was weakened compared with the control group,the control group was(203±13)/hole,while the interference group was(100±10)/hole(P＜0.01);the tubule formation test showed that HUVEC tubular formation treated by cultural supernatant in the interference group was decreased,the control group was 40±5,while the interference group was 24±3(P＜0.01).Conclusion Interfering NRP2 expression of BON-1 cells can inhibit the vessel formation ability of co-cultured HUVEC,suggesting that NRP2 may have the pro-angiogenesis effect of PNETs,and may be a potential new target for the treatment of PNETs.