中文摘要
I 期鼻咽癌(NPC)患者放疗后 5 年生存率可达 90%,IV 期仅 20%,但就诊时早期患者约为 20%,所以提高早诊率是提高 NPC 5 年生存率的关键。早期诊断的基础依赖于癌变早期机制的阐明、早期标志物的鉴定及在诊断中的应用。因 NPC 活检标本小、早期标本难获取、无理想动物模型等因素,限制了 NPC早期标志物筛选。在 NPC 易感基因定位(Nature Genet 2002,Cancer Res 2006)、EBV 广东株全序列分析(J Virol 2005)、鼻咽上皮细胞原代培养、早期转化细胞株(Cancer Res 2006)及反映癌变过程三维培养模型等我们的研究基础上,建立来自同一个体 NPC 癌细胞和正常细胞、早期和晚期患者 NPC 癌细胞、非 NPC 正常上皮细胞以及鼻咽上皮细胞体外早期转化和恶性转化模型,继而筛选和鉴定 NPC 癌变过程中特异性分子标志,用于 NPC 的早诊并评价其诊断价值,致力于提高 NPC 的早诊率。
英文摘要
The 5-year survival rate for Stage I nasopharyngeal carcinoma patient is above 90%, but that for stage IV patients is around 20%. Thus, improving early diagnostic rate is critic for increasing 5-year survival rate for nasopharyngeal carcinoma patients. The basis for early diagnosis is dependent on the demonstration of molecular mechanism of early transformation, characterization and application of early molecular markers in the carcinogenesis. Due to the size limitation of tissue samples, few tissue samples with early stage available, and no idea animal model available, screening of NPC molecular markers was hindered. On the basis of our studies, such as localization and cloning of NPC susceptibility gene, whole genomic sequence analysis of NPC derived EBV, primary culture of nasopharyngeal epithelial cells, establishment of nasopharyngeal early transformed cells, as well as establishment of nasopharyngeal epithelial three-dimensional culture model, we plan to establish both tumor cells and normal epithelial cells from the same donor, tumor cells from patients with different stage, normal epithelial cells from non NPC patients, immortalized as well as transformed cell lines, then to screen and to characterize NPC specific molecular markers. Finally we will analysis the significances of the above molecular mark
结题摘要
I 期鼻咽癌(NPC)患者放疗后 5 年生存率可达 90%,IV 期仅 20%,但就诊时早期患者约为 20%,所以提高早诊率是提高 NPC 5 年生存率的关键。早期诊断的基础依赖于癌变早期机制的阐明、早期标志物的鉴定及在诊断中的应用。因 NPC 活检标本小、早期标本难获取、无理想动物模型等因素,限制了 NPC早期标志物筛选。在 NPC 易感基因定位(Nature Genet 2002,Cancer Res 2006)、EBV 广东株全序列分析(J Virol 2005)、鼻咽上皮细胞原代培养、早期转化细胞株(Cancer Res 2006)及反映癌变过程三维培养模型等我们的研究基础上,建立来自同一个体 NPC 癌细胞和正常细胞、早期和晚期患者 NPC 癌细胞、非 NPC 正常上皮细胞以及鼻咽上皮细胞体外早期转化和恶性转化模型,继而筛选和鉴定 NPC 癌变过程中特异性分子标志,用于 NPC 的早诊并评价其诊断价值,致力于提高 NPC 的早诊率。
