张鸿晖 刘清泉 熊秋生
【摘要】 目的:探究色素衍生上皮因子(PEDF)在肝癌組织中表达的临床意义。方法:选取2013年1月-2017年10月本院接诊的80例肝癌患者为肝癌组及80例健康人作为对照组。检测比较两组及肝癌不同分期PEDF、血管内皮生长因子(VEGF)、人血小板反应蛋白1(TSP-1)、基质金属蛋白酶9(MMP-9)和微血管密度(MVD)、瘤坏死因子-α(TNF-α)、白细胞介素2(IL-2)、血栓调节蛋白(TM)、白细胞介素8(IL-8)水平,分析各指标间的相关关系。结果:肝癌组VEGF、MMP-9、TNF-α、TM、IL-8及MVD水平均高于对照组,而PEDF、TSP-1、IL-2水平均显著低于正常肝组织,比较差异均有统计学意义(P<0.05);VEGF、MMP-9、TNF-α、TM、IL-8和MVD水平随分化程度的下降而呈升高趋势,而PEDF、TSP-1和IL-2水平随分化程度的下降而呈下降趋势,比较差异均有统计学意义(P<0.05);PEDF与VEGF、TM和MVD呈负相关(P<0.05),与TSP-1呈正相关(P<0.05);VEGF与MMP-9、TM、MVD呈正相关(P<0.05),与TSP-1呈负相关(P<0.05);TSP-1与MVD、TM呈负相关(P<0.05);MMP-9、IL-8与MVD呈正相关(P<0.05),IL-2与MVD呈负相关(P<0.05);MMP-9与TM呈正相关(P<0.05)。结论:PEDF和TSP-1可能通过拮抗VEGF和MMP-9对肿瘤血管生成的调节作用来抑制TM和MVD,从而起到抗癌的作用,其在肝癌的治疗方面必将有广泛的用途。
【关键词】 PEDF; 肝癌; 作用机制
【Abstract】 Objective:To investigate the clinical significance of pigment derived epithelial factor(PEDF) expression in liver cancer tissue.Method:A total of 80 patients with liver cancer were selected as liver cancer group and 80 healthy people as control group from January 2013 to October 2017 in our hospital were selected.The levels of PEDF,vascular endothelial growth factor(VEGF),human platelet reactive protein 1(TSP-1),matrix metalloproteinase 9(MMP-9),microvessel density(MVD),tumor necrosis factor-α(TNF-α),interleukin 2(IL-2),thrombomodulin(TM),interleukin 8(IL-8) in different stages of liver cancer and two groups were compared,and analyze the correlation between the indicators.Result:The levels of VEGF,MMP-9,TNF-α,TM,IL-8 and MVD in liver cancer group were higher than those of control group,while the levels of PEDF,TSP-1 and IL-2 were significantly lower than those of control group,the differences were statistically significant(P<0.05).The levels of VEGF,MMP-9,TNF-α,TM,IL-8 and MVD increased with the decrease of differentiation,while the levels of PEDF,TSP-1 and IL-2 decreased with the decrease of differentiation,the differences were statistically significant(P<0.05).PEDF was negatively correlated with VEGF,TM and MVD(P<0.05),and positively correlated with TSP-1(P<0.05).VEGF was positively correlated with MMP-9,TM and MVD(P<0.05),and negatively correlated with TSP-1(P<0.05).TSP-1 was negatively correlated with MVD and TM(P<0.05).MMP-9 and IL-8 were positively correlated with MVD(P<0.05),and IL-2 was negatively correlated with MVD(P<0.05).MMP-9 was positively correlated with TM(P<0.05).Conclusion:PEDF and TSP-1 may inhibit TM and MVD by antagonizing the regulatory effect of VEGF and MMP-9 on tumor angiogenesis and it may play a role in anticancer.It will be widely used in treatment of liver cancer.
【Key words】 PEDF; Liver cancer; Mechanism of action
First-authors address:The First Affiliated Hospital of Gannan Medical University,Ganzhou 341000,China
doi:10.3969/j.issn.1674-4985.2018.31.001
原发性肝癌是高度恶性的肿瘤,其死亡率高居我国肿瘤死亡率的第二位,严重影响着人们的生命健康[1-2]。幸运的是,因色素上皮衍生因子(pigment epithelium derived factor,PEDF)的发现给肝癌患者带来了希望,其在多种恶性肿瘤中均起了重要的抑癌作用[3-4]。并且现多项研究表明PEDF是一种天然的高效的新生血管抑制剂,因PEDF减少肿瘤微血管的密度,故可被用于抑制肿瘤新生血管形成,从而抑制肿瘤的生长[5-6]。故应用分子生物学技术检测肝癌组织中PEDF及相关细胞因子的表达水平,并结合临床资料分析PEDF表达与肝癌分期、分级、转移及预后的关系;从而探讨PEDF在肝癌发生、发展过程中的作用,对进一步提高我国肝癌的防治水平具有重要意义和必要性。鉴于此,本院选取2013年1月-2017年10月接诊的80例肝癌患者为研究对象,研究PEDF抑制肝癌发生发展的作用。现报道如下。
1 资料与方法
1.1 一般资料 选取2013年1月-2017年10月本院接诊的80例肝癌患者为肝癌组,根据美国癌症联合委员会(AJCC)制定的第8版癌症分期系统[7]:Ⅰ期14例、Ⅱ期19例、Ⅲ期21例、Ⅳ期26例。……