过表达富组氨酸糖蛋白质粒在体外抑制MHCC-97H肝癌细胞增殖

摘要

目的：检测原发性肝癌组织富组氨酸糖蛋白(HRG)的表达，及其在体外研究过表达富组氨酸糖蛋白质粒对肝癌细胞增殖能力的影响。方法采用免疫组化法检测8例肝癌组织HRG表达情况，采用Western blot法检测11例手术切除的肝癌组织和癌旁组织HRG表达的差异；在人肝癌细胞株MHCC-97H细胞中转染稳定过表达HRG质粒，使用流式细胞仪分析肝癌细胞的增殖能力。结果8例原发性肝癌组织HRG表达量较非肿瘤组织明显减少；另11例癌组织HRG表达量为（0.14±0.17），癌旁组织HRG相对表达量为（1.39±2.08），两者差异有统计学意义（P<0.05）；稳定过表达HRG的人肝癌细胞株MHCC-97H细胞增殖比例为（1.72±1.19）%，显著低于对照组[（14.3±2.99）%，P<0.01]。结论原发性肝癌癌组织HRG表达明显减少，过表达HRG的肿瘤细胞增殖能力降低。%Objective To investigate the expression of histidine-rich glycoprotein (HRG) in hepatocellular carcinoma (HCC) and its impact on HCC cell proliferation. Methods Immunohistochemistry was used to detect the expression of HRG in 8 HCC specimens and Western blot to evaluate the expression of HRG in 11 surgical cancerous and its non-cancerous specimens. The cell proliferation was analyzed by flow cytometry after stable overexpression of HRG in MHCC-97H cells. Results Declined expression of HRG was found in all 8 cancerous tissues as compared to the non-tumor tissues;Similar results were obtained in 11 pairs of HCC and its para-carcinoma tissues;The relative expression of HRG/β-actin was(1.39±2.08) in para-carcinoma tissues,and (0.14 ± 0.17) in tumor tissue,with a significant difference between them (P<0.05);The cell proliferation of MHCC-97H cells overexpressing HRG was remarkably inhibited as compared with the mock cells [(1.72 ±1.19)% vs.(14.3 ± 2.99)%,P<0.01]. Conclusion HRG is down-regulated in HCC and HRG overexpression can inhibit HCC cell proliferation in vitro.