人宫颈癌癌基因（human cervical cancer oncogene,HCCR）系由Ko等[1]用差异显示RT-PCR技术从人宫颈癌组织中筛选得到的基因。荧光原位杂交分析显示其定位于人染色体的12q,HCCR由于前体mRNA转录后选择性拼接不同而形成HCCR-1和HCCR-2两...人宫颈癌癌基因（human cervical cancer oncogene,HCCR）系由Ko等[1]用差异显示RT-PCR技术从人宫颈癌组织中筛选得到的基因。荧光原位杂交分析显示其定位于人染色体的12q,HCCR由于前体mRNA转录后选择性拼接不同而形成HCCR-1和HCCR-2两个亚型,HCCR-2比HCCR-1缺少了1个外显子,展开更多
Objective: To investigate the role of collagen IV and PAS positive substancesecreted by tumor cells in vasculogenic mimicry (VM) and the effects of VM on tumor cells expressingVEGF. Methods: 158 cases of bi-direction ...Objective: To investigate the role of collagen IV and PAS positive substancesecreted by tumor cells in vasculogenic mimicry (VM) and the effects of VM on tumor cells expressingVEGF. Methods: 158 cases of bi-direction differential malignant tumor specimens withparaffin-embedded were enrolled into our study and made tissue microarray which were dual-stainedwith CD31-PAS and stained with collagen IV. The difference of the areas and distribution withpattern surrounded by between CD31 and PAS positive respectively were identified via grid-counting,as well as the difference of VEGF expression with VE absent and present. Results: The basementmembrane of VM was both PAS and collagen IV positive. VEGF expression in the bi-directiondifferential malignant tumor was higher VM-absent than VM-present and the difference wasstatistically significance in malignant melanoma and alveolar rhabdomyosarcoma (P 【 0.05).Conclusion: PAS positive substance and collagen IV compose the wall of VE and VE could provide theoxygen and nutrition for tumor growth and progression.展开更多
文摘人宫颈癌癌基因（human cervical cancer oncogene,HCCR）系由Ko等[1]用差异显示RT-PCR技术从人宫颈癌组织中筛选得到的基因。荧光原位杂交分析显示其定位于人染色体的12q,HCCR由于前体mRNA转录后选择性拼接不同而形成HCCR-1和HCCR-2两个亚型,HCCR-2比HCCR-1缺少了1个外显子,
基金This work was partially supported by a grant from the National Natural Science Foundation of China (No. 30370378)
文摘Objective: To investigate the role of collagen IV and PAS positive substancesecreted by tumor cells in vasculogenic mimicry (VM) and the effects of VM on tumor cells expressingVEGF. Methods: 158 cases of bi-direction differential malignant tumor specimens withparaffin-embedded were enrolled into our study and made tissue microarray which were dual-stainedwith CD31-PAS and stained with collagen IV. The difference of the areas and distribution withpattern surrounded by between CD31 and PAS positive respectively were identified via grid-counting,as well as the difference of VEGF expression with VE absent and present. Results: The basementmembrane of VM was both PAS and collagen IV positive. VEGF expression in the bi-directiondifferential malignant tumor was higher VM-absent than VM-present and the difference wasstatistically significance in malignant melanoma and alveolar rhabdomyosarcoma (P 【 0.05).Conclusion: PAS positive substance and collagen IV compose the wall of VE and VE could provide theoxygen and nutrition for tumor growth and progression.
