肝细胞核因子4α抑制大鼠肝癌细胞增殖、侵袭能力和新生血管生成相关基因表达
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南京市医学科技发展项目(201308014)


Hepatocyte nuclear factor 4α inhibits the proliferation, invasiveness and expression of new angiogenesis related genes in rat hepatocellular carcinoma cells
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    摘要:

    目的:研究肝细胞核因子4α(hepatocyte nuclear factor 4α,HNF4α)在体内-体外实验中与大鼠肝癌新生血管生成相关基因表达之间的相互关系。方法:将过表达HNF4α腺病毒转染CBRH-7919细胞,采用CCK-8法检测细胞增殖效应,Transwell法检测细胞侵袭能力,RT-PCR和Western blot检测血管生成素2(angiopoietin-2,Ang-2)-血管内皮生长因子(vascular endothelial grouth factor,VEGF)的表达情况。体内试验建立肝大部切除模型(70%),分别在残肝上注入CBRH-7919细胞(空白组)或转染空载体腺病毒CBRH-7919细胞(阴性对照组)或转染过表达HNF4α腺病毒的CBRH-7919细胞(实验组)。4周后处死大鼠,通过免疫组化来观察肝标本Ang-2-VEGF的表达情况。结果:转染过表达HNF4α腺病毒的CBRH-7919细胞增殖能力和侵袭能力较空白-阴性对照组均明显抑制(P < 0.05);实验组Ang-2-VEGF在基因-蛋白水平表达较空白-阴性对照组均明显抑制(P < 0.05)。体内实验大鼠肝脏组织免疫组织化学切片显示实验组Ang-2-VEGF蛋白表达水平较空白-阴性对照组均明显抑制(P < 0.05)。结论:HNF4a可以抑制大鼠肝癌7919的增殖-侵袭能力,并且抑制肝癌新生血管生成相关基因Ang-2-VEGF的表达。

    Abstract:

    Objective:To investigate the effect of hepatocyte nuclear factor 4α (HNF4α) on the angiogenesis related genes of CBRH-7919 in vitro and in vivo. Methods: CBRH-7919 cells were transfected with HNF4α adenovirus vector. CBRH-7919 cell proliferation was detected by cell counting kit-8 (CCK8) assay and the migration and invasion were assessed by Transwell assays. The expressions of Angiopoietin-2 (Ang-2) and vascular endothelial growth factor (VEGF) were detected by RT-PCR and Western blotting assay. In vivo, CBRH-7919 cells, CBRH-7919-Null-Vector cells and CBRH-7919-HNF4α cells were respectively injected into the rest of the liver after establishment of subtotal hepatectomy model (70%). Four weeks later, the expressions of Ang-2 and VEGF in the liver tissues were detected by immunohistochemical assay. Results: In vitro study indicated that after transfected with adenovirus vector LV-HNF4α,the proliferation of CBRH-7919 was significantly inhibited (P < 0.05) and the invasiveness was also significantly inhibited (P < 0.05)compared with the control group,respectively. The result of RT-PCR suggested that the expressions of Ang-2 and VEGF were inhibited after transfected with adenovirus vector. In vivo study showed similar finding that the expressions of Ang-2 and VEGF were inhibited after transfected with adenovirus vector(P < 0.05). Conclusion: HNF4α can significantly inhibit proliferation and metastasis capability of CBRH-7919, as well as inhibits the expression of Ang-2 and VEGF in CBRH-7919.

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张 勇,吴 宁,马 永,汪海天,李周骁,卞建民.肝细胞核因子4α抑制大鼠肝癌细胞增殖、侵袭能力和新生血管生成相关基因表达[J].南京医科大学学报(自然科学版),2016,(4):430-434

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  • 收稿日期:2015-07-27
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  • 在线发布日期: 2016-05-11
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