To explore the relationship of angiogenesis-related angiopoietin-2 gene and its receptor Tie2 with angiogenesis and the biology of hepatocellular carcinoma (HCC), angiopoietin-2 gene, Tie2 and CD34 protein expression ...To explore the relationship of angiogenesis-related angiopoietin-2 gene and its receptor Tie2 with angiogenesis and the biology of hepatocellular carcinoma (HCC), angiopoietin-2 gene, Tie2 and CD34 protein expression in 22 resected HCC, 8 cirrhotic and 8 control liver specimens were investigated by in situ hybridization and immunohistochemistry respectively, and the level of angiopoietin-2 and Tie2 expression in HCC were compared in terms of tumor biological parameters. It was found that CD34 was not expressed in control liver, expressed scarcely in cirrhotic liver (17 8±13 5/HP), but intensively expressed in HCC (86. 3±34. 8/HP, P<0. 01). Tie2 receptor was not expressed in controls, expressed at low level in cirrhotic liver (11. 3±8. 7/HP), while strongly positive in the microvascular endothelia of HCC (52. 4±16. 7/HP, P<0. 01). The level of Tie2 receptor expression in HCC was closely related with tumor diameter, angiogenesis and portal invasion. Angiopoietin-2 gene was not expressed in control liver, expressed mildly in cirrhotic liver (11. 2±9. 7/HP), but extensively in tumor zone (36. 4±17. 5/HP), the level of angiopoietin-2 expression was closely related with angiogenesis, portal invasion and histological grading of HCC. It is concluded that angiogenesis is increased in HCC; angiopoietin-2/Tie2 expression in human hepatic carcinoma is closely related with angiogenesis, which are probably involved in the HCC angiogenesis regulation, promoting the development and metastasis of human hepatic cancer.展开更多
目的探讨血管生成素-2(Ang-2)及其受体内皮细胞特异性酪氨酸激酶受体(Tie-2)在宫颈癌组织中发生、发展和临床病理学特征的关系。方法采用免疫组织化学、RT-PCR及Western blot分别检测Ang-2及Tie-2在60例正常宫颈及宫颈癌组织中的组织定...目的探讨血管生成素-2(Ang-2)及其受体内皮细胞特异性酪氨酸激酶受体(Tie-2)在宫颈癌组织中发生、发展和临床病理学特征的关系。方法采用免疫组织化学、RT-PCR及Western blot分别检测Ang-2及Tie-2在60例正常宫颈及宫颈癌组织中的组织定位、基因差异表达及蛋白差异表达;采用Spearman法分析Ang-2及Tie-2的表达相关性。结果宫颈癌组织中Ang-2及Tie-2的阳性表达率明显高于正常宫颈组织,差异均有统计学意义(均P<0.05)。Ang-2及Tie-2在淋巴结发生转移或临床分期Ⅲ~Ⅳ级的患者中的表达明显高于未发生淋巴结转移或临床分期Ⅰ~Ⅱ级的患者(均P<0.05)。宫颈癌组织中Ang-2及Tie-2 m RNA及蛋白表达水平均明显高于正常宫颈组织,差异均有统计学意义(均P<0.01)。Tie-2与Ang-2在宫颈癌组织中的表达呈正相关(r=0.847 9,P<0.01)。结论 Ang-2及Tie-2的表达水平与宫颈癌临床分期和有无淋巴结转移密切相关,且Ang-2、Tie-2 m RNA及蛋白在宫颈癌组织中的表达明显高于正常宫颈组织,Ang-2及Tie-2可能在宫颈癌发生、发展过程中发挥重要作用。展开更多
文摘To explore the relationship of angiogenesis-related angiopoietin-2 gene and its receptor Tie2 with angiogenesis and the biology of hepatocellular carcinoma (HCC), angiopoietin-2 gene, Tie2 and CD34 protein expression in 22 resected HCC, 8 cirrhotic and 8 control liver specimens were investigated by in situ hybridization and immunohistochemistry respectively, and the level of angiopoietin-2 and Tie2 expression in HCC were compared in terms of tumor biological parameters. It was found that CD34 was not expressed in control liver, expressed scarcely in cirrhotic liver (17 8±13 5/HP), but intensively expressed in HCC (86. 3±34. 8/HP, P<0. 01). Tie2 receptor was not expressed in controls, expressed at low level in cirrhotic liver (11. 3±8. 7/HP), while strongly positive in the microvascular endothelia of HCC (52. 4±16. 7/HP, P<0. 01). The level of Tie2 receptor expression in HCC was closely related with tumor diameter, angiogenesis and portal invasion. Angiopoietin-2 gene was not expressed in control liver, expressed mildly in cirrhotic liver (11. 2±9. 7/HP), but extensively in tumor zone (36. 4±17. 5/HP), the level of angiopoietin-2 expression was closely related with angiogenesis, portal invasion and histological grading of HCC. It is concluded that angiogenesis is increased in HCC; angiopoietin-2/Tie2 expression in human hepatic carcinoma is closely related with angiogenesis, which are probably involved in the HCC angiogenesis regulation, promoting the development and metastasis of human hepatic cancer.
文摘目的探讨血管生成素-2(Ang-2)及其受体内皮细胞特异性酪氨酸激酶受体(Tie-2)在宫颈癌组织中发生、发展和临床病理学特征的关系。方法采用免疫组织化学、RT-PCR及Western blot分别检测Ang-2及Tie-2在60例正常宫颈及宫颈癌组织中的组织定位、基因差异表达及蛋白差异表达;采用Spearman法分析Ang-2及Tie-2的表达相关性。结果宫颈癌组织中Ang-2及Tie-2的阳性表达率明显高于正常宫颈组织,差异均有统计学意义(均P<0.05)。Ang-2及Tie-2在淋巴结发生转移或临床分期Ⅲ~Ⅳ级的患者中的表达明显高于未发生淋巴结转移或临床分期Ⅰ~Ⅱ级的患者(均P<0.05)。宫颈癌组织中Ang-2及Tie-2 m RNA及蛋白表达水平均明显高于正常宫颈组织,差异均有统计学意义(均P<0.01)。Tie-2与Ang-2在宫颈癌组织中的表达呈正相关(r=0.847 9,P<0.01)。结论 Ang-2及Tie-2的表达水平与宫颈癌临床分期和有无淋巴结转移密切相关,且Ang-2、Tie-2 m RNA及蛋白在宫颈癌组织中的表达明显高于正常宫颈组织,Ang-2及Tie-2可能在宫颈癌发生、发展过程中发挥重要作用。