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中华眼科医学杂志(电子版) ›› 2017, Vol. 07 ›› Issue (01) : 12 -17. doi: 10.3877/cma.j.issn.2095-2007.2017.01.003

所属专题: 文献

论著

VEGF诱导对翼状胬肉成纤维细胞血管生成拟态影响的研究
陈俊杰1, 蓝育青2,(), 吴共发3, 黄绮亭3, 曾宇婷3   
  1. 1. 511300 广东省 广州市增城区人民医院(中山大学孙逸仙纪念医院增城院区)眼科
    2. 510120 中山大学孙逸仙纪念医院眼科
    3. 511300 广东省 广州市增城区人民医院病理科
  • 收稿日期:2017-01-02 出版日期:2017-02-28
  • 通信作者: 蓝育青
  • 基金资助:
    广东省医学科研基金(A2016422); 广州市增城区人民医院优秀医学人才培育基金(2017-YX-01)

Study on fibroblasts in vasculogenic mimicry of pterygium induced by VEGF

Junjie Chen1, Yuqing Lan2,(), Gongfa Wu3, Qiting Huang3, Yuting Zeng3   

  1. 1. Department of ophthalmology, Zengcheng District People′s Hospital of Guangzhou, Guangzhou 511300, China
    2. Department of ophthalmology, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
    3. Department of Pathology, Zengcheng District People′s Hospital of Guangzhou, Guangzhou 511300, China
  • Received:2017-01-02 Published:2017-02-28
  • Corresponding author: Yuqing Lan
  • About author:
    Corresponding author: Lan Yuqing, Email:
引用本文:

陈俊杰, 蓝育青, 吴共发, 黄绮亭, 曾宇婷. VEGF诱导对翼状胬肉成纤维细胞血管生成拟态影响的研究[J]. 中华眼科医学杂志(电子版), 2017, 07(01): 12-17.

Junjie Chen, Yuqing Lan, Gongfa Wu, Qiting Huang, Yuting Zeng. Study on fibroblasts in vasculogenic mimicry of pterygium induced by VEGF[J]. Chinese Journal of Ophthalmologic Medicine(Electronic Edition), 2017, 07(01): 12-17.

目的

探讨血管内皮生长因子(VEGF)诱导对人翼状胬肉成纤维细胞血管生成拟态(VM)的影响。

方法

收集在广州市增城区人民医院行翼状胬肉手术的6例新鲜的初发性人翼状胬肉标本(年龄41~58岁)。将人翼状胬肉新鲜组织剪碎后进行体外贴壁细胞常规培养,并采用波形蛋白(Vimentin)免疫细胞化学染色和广谱细胞角蛋白(CK)染色对人翼状胬肉成纤维细胞进行鉴定。分别设置对照组和不同浓度的VEGF(1 ng/ml、10 ng/ml及100 ng/ml)组,取生长良好的3~5代翼状胬肉成纤维细胞进行分组培养。采用细胞计数试剂盒-8法检测各组成纤维细胞的增殖能力。应用细胞三维培养技术和糖原染色法观察各组VM的进展情况,采用蛋白质印迹法检测各组细胞的基质金属蛋白酶(MMP)-2和低氧诱导因子-1α(HIF-1α)蛋白的表达。各组吸光度(OD值)、MMP-2及HIF-1α的描述均采用均数±标准差(±s)表示,对照组与不同浓度VEGF组的比较采用单向方差分析,当差异有统计学意义时,进一步两两比较。双变量相关性分析采用Spearman′s等级相关分析。

结果

人翼状胬肉成纤维细胞鉴定结果显示,细胞爬片经苏木精-伊红染色后,在显示镜下细胞呈长梭形、三角形、扇形或不规则状。细胞免疫化学染色结果显示,细胞的胞浆呈Vimentin阳性表达,广谱CK阴性表达。细胞计数试剂盒-8法检测细胞增殖结果显示,对照组、1 ng/ml组、10 ng/ml组及100 ng/ml组细胞的OD值分别为0.57±0.023、0.59±0.012、0.77±0.024及1.014±0.035。对照组和1 ng/ml组比较差异无统计学意义(t=1.21,P>0.05);10 ng/ml组和100 ng/ml组的OD值均明显高于对照组和1 ng/ml组(t=14.78,12.34;P<0.05);100 ng/ml组的OD值最高,与对照组、1 ng/ml组及10 ng/ml组比较,差异有统计学意义(t=20.12,19.45,13.41;P<0.05)。细胞三维培养及糖染色显示,10 ng/ml组和100 ng/ml组均出现VM结构,而对照组和1 ng/ml组未发现VM结构。10 ng/ml组和100 ng/ml组VM结构的密度分别为4.40±1.14和12.40±2.07,差异有统计学意义(t=-7.899,P<0.05)。对照组、1 ng/ml组、10 ng/ml组及100 ng/ml组细胞的MMP-2值分别为0.26±0.038、0.29±0.013、0.39±0.013及0.73±0.014;对照组、1 ng/ml组、10 ng/ml组及100 ng/ml组细胞的HIF-1α值分别为0.087±0.0086、0.087±0.0031、0.15±0.0016及0.37±0.026。对照组和1 ng/ml组中MMP-2和HIF-1α灰度值的差异均无统计学意义(t=1.21,0.01;P>0.05);10 ng/ml组中MMP-2和HIF-1α灰度值均显著高于对照组和1 ng/ml组(t=7.92,6.85,17.64,17.82;P<0.05);100 ng/ml组的中MMP-2和HIF-1α灰度值均显著高于其他3组(t=28.48,26.45,18.72,25.31,24.78,15.45;P<0.05)。翼状胬肉成纤维细胞的血管生成拟态密度与MMP-2和HIF-1α表达呈显著正相关(r=0.509,0.503;P<0.05)。

结论

VEGF能够增强人翼状胬肉成纤维细胞的增殖能力、促进VM出现及促使MMP-2和HIF-1α表达增高。提示VEGF因素可能是翼状胬肉出现VM的分子机制,并协同增强MMP-2和HIF-1α表达一起影响翼状胬肉的进展。

Objective

To investigate the expression of vascular endothelial growth factor (VEGF) on human pterygium fibroblast angiogenesis induced by vasculogenic mimicry (VM) effect.

Methods

6 cases of primary pterygium were collected from Zengcheng District People′s Hospital of Guangzhou province (aged from 41 to 58). Cut fresh tissue of human pterygium, and in vitro adherent cell culture. The human pterygium fibroblasts were identified by immunocytochemical staining of Vimentin and cytokeratin. Groups were divided into control group and different concentrations of VEGF (1 ng/ml, 10 ng/ml and 100 ng/ml) group, take good growth of the 3 to 5 generations of pterygium fibroblasts were cultured. Cell counting kit-8 method was used to detect the proliferation ability of each component of the fibroblast cells, and the cell culture and PAS staining were used to observe the VM of each group, Western blotting was used to detect the expression of matrix metalloproteinase (MMP)-2 and hypoxia inducible factor -1α(HIF-1α) protein in the cells of each group of rats.Each absorbance(OD value), MMP-2, and HIF-1 alpha described by the mean and standard deviation (±s). Multiple groups were compared using one-way analysis of variance, when the difference was statistically significant, two further comparisons between the two. Bivariate correlation analysis using Spearman′s rank correlation analysis.

Results

Human pterygium fibroblasts identification results showed that the cell smear after hematoxylin eosin staining under the microscope in the display cell fusiform, triangle, fan-shaped or irregular shape. The results of immunocytochemical staining showed that the cytoplasm of the cells was positive for Vimentin, and the expression of CK was negative. The results of cell counting kit was used to detect cell proliferation showed that the OD value of control group and 1 ng/ml group, 10 ng/ml group and 100 ng/ml group cells were 0.57±0.023, 0.59±0.012, 0.77±0.024 and 1.014±0.035, differences in control group and 1 ng/ml group was not statistically significant (t=1.21, P>0.05). the OD value of 10 ng/ml group and 100 ng/ml group were higher than that of the control group and 1 ng/ml group (t=14.78, 12.34; P<0.05); the OD value of 100 ng/ml group is the highest, control group, 1 ng/ml and 10 ng/ml groups were significantly different (t=20.12, 19.45, 13.41; P<0.05). Three dimensional cell culture and PAS staining showed that 10 ng/ml group and the 100 ng/ml group had VM structure in the control group and the 1 ng/ml group, no VM appeared in the control group and group. 10 ng/ml group and the density of the 100 ng/ml were respectively 4.40±1.14 and 12.40±2.07, the difference was statistically significant (t=-7.899, P<0.05). The 1 ng/ml group, 10 ng/ml group and 100 ng/ml group cell MMP-2 values were 0.26±0.038, 0.29±0.013, 0.39±0.013 and 0.73±0.014 in the control group; and 1 ng/ml group, 10 ng/ml group and 100 ng/ml group cell HIF-1 values were 0.087±0.0086 and 0.087±0.0031, 0.15±0.0016 and 0.37±0.026 in control. The difference between MMP-2 and HIF-1 alpha gray value of 1 ng/ml group and control group had no statistical significance (t=1.21, 0.01; P>0.05); MMP-2 and HIF-1 alpha gray values were significantly higher than those in control group and 1 ng/ml group (t=7.92, 6.85, 17.64, 17.82; P<0.05); 100 ng/ml group of MMP-2 HIF-1 alpha and gray value were significantly higher than the other 3 groups (t=28.48, 26.45, 18.72, 25.31, 24.78, 15.45; P<0.05). Pterygium fibroblast cells in vasculogenic mimicry density and MMP-2 and HIF-1 expression was positively correlated, and closely correlated ( r=0.509, 0.503; P<0.05).

Conclusion

VEGF can promote cells proliferation and induce VM in human pterygium fibroblasts cells, also enhance the protein expression of MMP-2 and HIF-1α. VEGF may be the molecular mechanism of angiogenesis mimicry and synergistic enhancement MMP-2 and HIF-1α protein expression, thus influence the progress of pterygium.

图1 免疫细胞化学染色法鉴定人翼状胬肉成纤维细胞染色图 A 图显示人翼状胬肉成纤维细胞呈Vimentin阳性表达,表现为细胞胞浆呈黄褐色;B图显示人翼状胬肉成纤维细胞不表达广谱CK,无黄褐色着色(×200)
图2 10 ng/ml组和100 ng/ml组的细胞三维培养图像 倒置显微镜下观察出现管道状、网格状结构(×200)
图3 对照组与不同浓度VEGF组的诱导对翼状胬肉成纤维细胞MMP-2和HIF-1α蛋白表达的影响
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