Summary: To investigate the expression and clinical significance of p27kip1 protein in primary liver cancer, the expression of p27kip1 protein and the relationship with clinicopathological factors were studied in prim...Summary: To investigate the expression and clinical significance of p27kip1 protein in primary liver cancer, the expression of p27kip1 protein and the relationship with clinicopathological factors were studied in primary liver cancer by using SABC immunohistochemical staining in specimens of 40 cases of primary liver cancer and 20 cases of liver cirrihosis. Our results showed that positive expression rate of p27kip1 protein in primary liver cancer was 37.5 % (15/40), which was lower than that in benign lesion of liver 80.0 % (16/20, P<0.01). The expression level of p27kip1 protein in primary liver cancer showed significant differences in tumor size, Edmonson histological grade, portal invasion, lymph node metastasis, TNM stage (P<0.05, for all), but not significantly correlated with patient's age and histological types. Log rank test showed that the p27kip1 expression was significantly related with prognosis of the patients (P<0.05), and the prognosis of the patients with p27kip1 positive expression was markedly better than that of those with p27kip1 negative expression. It is concluded that the expression of p27kip1 was significantly related clinicopathological factors of primary liver cancer. p27kip1 protein may be used as a novel tumor marker for primary liver cancer.展开更多
目的:研究结直肠癌中的PTEN、ERK2及p27^(kip1)蛋白的表达及相互关系,初步探讨他们在结直肠癌发生发展中的生物学意义.方法:用免疫组织化学染色快捷法,检测40例结直肠癌组织、18例结直肠腺瘤、13例结直肠正常黏膜中PTEN蛋白、p27^(kip1)...目的:研究结直肠癌中的PTEN、ERK2及p27^(kip1)蛋白的表达及相互关系,初步探讨他们在结直肠癌发生发展中的生物学意义.方法:用免疫组织化学染色快捷法,检测40例结直肠癌组织、18例结直肠腺瘤、13例结直肠正常黏膜中PTEN蛋白、p27^(kip1)和ERK2蛋白的表达,比较PTEN蛋白表达与临床病理指标的关系,及其与p27^(kip1)、ERK2蛋白表达的相关性.结果:结直肠癌癌组织PTEN,ERK2和p27^(kip1)蛋白表达的阳性率与腺瘤及正常组织间比较差异有显著性(57.5% vs 72.2%,100%;70.0% vs 61.1%,23.1%:62.5% vs 77.8%,100%;P<0.05):PTEN蛋白表达强度与ERK2蛋白表达强度之间呈负相关(r=-0.452,P<0.05),与p27蛋白表达强度呈正相关(r=0.379,P<0.05);PTEN,p27^(kip1)蛋白与结直肠癌分化程度、淋巴结转移及Dukes分期相关(P<0.05):ERK2蛋白随结直肠癌淋巴结转移、Dukes分期的进展而增高.结论:抑癌基因PTEN的表达与结直肠癌生物学行为密切相关;在结直肠癌发生、发展过程中,可能由于PTEN蛋白的低表达或失表达抑制p27^(kip1)蛋白表达及Ras/Raf/MEK/ERK信号通路的异常激活,使细胞发生癌变,并促进癌变细胞的浸润、转移.展开更多
文摘Summary: To investigate the expression and clinical significance of p27kip1 protein in primary liver cancer, the expression of p27kip1 protein and the relationship with clinicopathological factors were studied in primary liver cancer by using SABC immunohistochemical staining in specimens of 40 cases of primary liver cancer and 20 cases of liver cirrihosis. Our results showed that positive expression rate of p27kip1 protein in primary liver cancer was 37.5 % (15/40), which was lower than that in benign lesion of liver 80.0 % (16/20, P<0.01). The expression level of p27kip1 protein in primary liver cancer showed significant differences in tumor size, Edmonson histological grade, portal invasion, lymph node metastasis, TNM stage (P<0.05, for all), but not significantly correlated with patient's age and histological types. Log rank test showed that the p27kip1 expression was significantly related with prognosis of the patients (P<0.05), and the prognosis of the patients with p27kip1 positive expression was markedly better than that of those with p27kip1 negative expression. It is concluded that the expression of p27kip1 was significantly related clinicopathological factors of primary liver cancer. p27kip1 protein may be used as a novel tumor marker for primary liver cancer.
文摘目的:研究结直肠癌中的PTEN、ERK2及p27^(kip1)蛋白的表达及相互关系,初步探讨他们在结直肠癌发生发展中的生物学意义.方法:用免疫组织化学染色快捷法,检测40例结直肠癌组织、18例结直肠腺瘤、13例结直肠正常黏膜中PTEN蛋白、p27^(kip1)和ERK2蛋白的表达,比较PTEN蛋白表达与临床病理指标的关系,及其与p27^(kip1)、ERK2蛋白表达的相关性.结果:结直肠癌癌组织PTEN,ERK2和p27^(kip1)蛋白表达的阳性率与腺瘤及正常组织间比较差异有显著性(57.5% vs 72.2%,100%;70.0% vs 61.1%,23.1%:62.5% vs 77.8%,100%;P<0.05):PTEN蛋白表达强度与ERK2蛋白表达强度之间呈负相关(r=-0.452,P<0.05),与p27蛋白表达强度呈正相关(r=0.379,P<0.05);PTEN,p27^(kip1)蛋白与结直肠癌分化程度、淋巴结转移及Dukes分期相关(P<0.05):ERK2蛋白随结直肠癌淋巴结转移、Dukes分期的进展而增高.结论:抑癌基因PTEN的表达与结直肠癌生物学行为密切相关;在结直肠癌发生、发展过程中,可能由于PTEN蛋白的低表达或失表达抑制p27^(kip1)蛋白表达及Ras/Raf/MEK/ERK信号通路的异常激活,使细胞发生癌变,并促进癌变细胞的浸润、转移.
