细胞周期调控因子P16INK4、P57kip2和K i67在肝癌中的表达及意义

摘要

目的：探讨细胞周期调控因子P16INK4、P57kip2和Ki67在肝癌中的表达水平及其意义。方法收集正常肝组织标本21例，肝细胞肝癌标本48例及对应的癌旁组织标本48例为研究对象，通过免疫组织化学和Western blot分析P16INK4、P57kip2和Ki67的表达水平。结果 P16INK4及 P57kip2蛋白肝癌组织中的表达与癌旁组织及正常肝脏组织比较显著降低，阳性率分别为49．3％和34．2％，K i67蛋白肝癌组织中的表达水平显著升高，其阳性率为91．7％，与癌旁组织及正常肝脏组织比较差异均有统计学意义（P＜0．05），结果与Western blot结果一致；高、低分化组P57kip2、Ki67及P16INK4的表达水平比较差异均有统计学意义（P＜0．05）。结论 P16INK4、P57kip2表达降低及Ki67的高表达在肝细胞癌的发生、发展过程中可能有重要的作用。%Objective Analysis the expression and significance of P16INK4 ,P57kip2 and Ki67 in hepatocellular carcinoma .Meth-ods 21 normal liver tissue ,48 hepatocellular carcinoma tissues and 48 corresponding adjacent tissue were collected for this study . Immunohistochemical analysis the expression levels of P16INK4 ,P57kip2 and Ki67 .Results P16INK4 and P57kip2 in hepatocellular carci-noma tissue were significantly lower ,the positive rates were 49 .3% and 34 .2% respectively ,Ki67 was significantly higher than the normal liver tissue and corresponding adjacent tissue ,the difference was statistically significant(P<0 .05) ,the results were consist-ent with the Western blot ;different differentiated group p57kip2 ,Ki67 expression and P16INK4 were significant differences(P<0 .05) . Conclusion Low expression of P16INK4 and P57kip2 ,the higher expression of Ki67 play an important role in the development of hepa-tocellular carcinoma .