P16 gene expression was measured by immnohistochemical method in poor differentiated serous cystadenocarcinoma cell line, xenograft of highly metastasizing human ovarian carcinoma in nude mice and paramn embedded tiss...P16 gene expression was measured by immnohistochemical method in poor differentiated serous cystadenocarcinoma cell line, xenograft of highly metastasizing human ovarian carcinoma in nude mice and paramn embedded tissues from 69 patients with ovarian carcinoma. The result showed that P16 gene was positive expression in HO-8910 cell of mother line,HO8910PM cell line and xenograft of highly mcatstasizing human ovarian carcinoma in nude mice. However, P16gene in the metastatic cell had a weaker expression. P16gene positive expression were also found in sl cases of 69cases (73.9%) in the ovarian epithelial carcinoma paramn embedded tissues. Comparative studies showed that the positive rate of P16 gene expression markedly reduced with the increase of pathologic grade and clinical stage,metastasis in the lymph node and decrease of 5-year survival (P<0.05, p<0.01).P16 gene is not only a controller of cytokerastic cycle, but also a key member of tumorigenic suppresser:its absence and expression degree are also correlated with the ovarian carcinoma genesis and development,especially with the metastasis of the ovarian cancer.展开更多
Objective: To investigate multi gene expression in the highly metastasizing human ovarian cancer cell line HO 8910PM and its mother cell line HO 8910. Method: The expression of 9 kinds of gene products in HO 8910...Objective: To investigate multi gene expression in the highly metastasizing human ovarian cancer cell line HO 8910PM and its mother cell line HO 8910. Method: The expression of 9 kinds of gene products in HO 8910PM and its mother cell line HO 8910 was detected by S P immunohistochemical method. Result: Eight kinds oncogene products showed various degrees of positive expression in both HO 8910PM and HO 8910 cell lines except gene bax. The expression of P53, Cyclin D 1, CD 44 ν6 and EGFR in HO 8910PM was stronger than that in HO 8910. However, the expression of P16, nm23 in HO 8910PM was weaker than that in HO 8910. There was no significant difference on the expression of C erb B 2 and bcl 2 between the two cell lines. Conclusion: Stronger invasive and metastatic patential is found in HO 8910PM than that in HO 8910. Carcinogenesis is a result of multi oncogene and multiple step process cooperation.展开更多
目的:研究原癌基因c-myc、细胞周期调控蛋白(P21WAF1)、EB病毒潜伏膜蛋白1(Latent m embraneprote in 1)LMP-1与K i67在鼻咽癌(Nasopharyngeal carc inom a,NPC)中的表达及其相关性和临床意义。方法:应用免疫组织化学Envision二步法检...目的:研究原癌基因c-myc、细胞周期调控蛋白(P21WAF1)、EB病毒潜伏膜蛋白1(Latent m embraneprote in 1)LMP-1与K i67在鼻咽癌(Nasopharyngeal carc inom a,NPC)中的表达及其相关性和临床意义。方法:应用免疫组织化学Envision二步法检测35例经治疗后,生存时间<5年的鼻咽非角化性癌(Nonkeratin izing carc ino-m a,NKC),60例生存时间≥5年的NKC及对照组30例鼻咽黏膜慢性炎症组织(non-tumour nasopharyngeal tis-sue,NP)内c-myc,P21WAF1,LMP-1,K i67的表达水平。结果:(1)c-myc,LMP-1和K i67在生存时间<5年组、生存时间≥5年组及NP组中的阳性表达率依次递减(P<0.05);(2)P21WAF1在NKC生存时间<5年组,生存时间≥5年组及NP组中的阳性率依次递增(P<0.05);(3)c-myc的阳性表达与NKC的淋巴结转移有关(P<0.05)。LMP-1,K i67的阳性表达与NKC临床分期密切相关(P<0.05);(4)c-myc和LMP-1共同表达时较两者各自单独表达时,K i67的强表达率明显增强;(5)c-myc和LMP-1的阳性表达与K i67的强表达呈正相关关系,P21WAF1的阳性表达与K i67的强表达呈负相关关系。结论:c-myc,LMP-1的高表达及P21WAF1的低表达与NPC细胞的增殖密切相关,且前两者在NKC发生发展中存在协同作用;通过检测c-myc,P21WAF1,LMP-1及K i67的表达,有助于对NKC预后的评估。展开更多
目的探讨原发性胆囊癌组织中的基因组变化,寻找与胆囊癌相关的癌基因和抑癌基因的染色体候选区域。方法采用比较基因组杂交方法(CGH)分析28例原发性胆囊癌组织基因组的不平衡即 DNA 的扩增和丢失。结果胆囊癌常见的染色体扩增区域是7p...目的探讨原发性胆囊癌组织中的基因组变化,寻找与胆囊癌相关的癌基因和抑癌基因的染色体候选区域。方法采用比较基因组杂交方法(CGH)分析28例原发性胆囊癌组织基因组的不平衡即 DNA 的扩增和丢失。结果胆囊癌常见的染色体扩增区域是7p、7q、8q、17q、5p、11q、1q;常见的缺失染色体为17 p、9p、5q、6q、3p、15p、13p。结论胆囊癌中存在多条染色体拷贝数的改变,7p、7q、8q 和17p、9p 等部位可能分别存在与胆囊癌密切相关的癌基因和抑癌基因。展开更多
文摘P16 gene expression was measured by immnohistochemical method in poor differentiated serous cystadenocarcinoma cell line, xenograft of highly metastasizing human ovarian carcinoma in nude mice and paramn embedded tissues from 69 patients with ovarian carcinoma. The result showed that P16 gene was positive expression in HO-8910 cell of mother line,HO8910PM cell line and xenograft of highly mcatstasizing human ovarian carcinoma in nude mice. However, P16gene in the metastatic cell had a weaker expression. P16gene positive expression were also found in sl cases of 69cases (73.9%) in the ovarian epithelial carcinoma paramn embedded tissues. Comparative studies showed that the positive rate of P16 gene expression markedly reduced with the increase of pathologic grade and clinical stage,metastasis in the lymph node and decrease of 5-year survival (P<0.05, p<0.01).P16 gene is not only a controller of cytokerastic cycle, but also a key member of tumorigenic suppresser:its absence and expression degree are also correlated with the ovarian carcinoma genesis and development,especially with the metastasis of the ovarian cancer.
文摘Objective: To investigate multi gene expression in the highly metastasizing human ovarian cancer cell line HO 8910PM and its mother cell line HO 8910. Method: The expression of 9 kinds of gene products in HO 8910PM and its mother cell line HO 8910 was detected by S P immunohistochemical method. Result: Eight kinds oncogene products showed various degrees of positive expression in both HO 8910PM and HO 8910 cell lines except gene bax. The expression of P53, Cyclin D 1, CD 44 ν6 and EGFR in HO 8910PM was stronger than that in HO 8910. However, the expression of P16, nm23 in HO 8910PM was weaker than that in HO 8910. There was no significant difference on the expression of C erb B 2 and bcl 2 between the two cell lines. Conclusion: Stronger invasive and metastatic patential is found in HO 8910PM than that in HO 8910. Carcinogenesis is a result of multi oncogene and multiple step process cooperation.