基于PCR的消减杂交法克隆脑胶质瘤肿瘤相关基因和抑癌基因  

Cloning Tumor-related Genes and Tumor Suppressor Genes in Glioma with Polymerase Chain Reaction-based Subtractive Hybridization

作　　者：邓艳春[1] 王吉村[1] 刘新平[1] 季少平[1] 药立波[1] 

机构地区：[1]第四军医大学西京医院神经内科,陕西西安710032

出　　处：《癌症》2005年第6期680-684,共5页Chinese Journal of Cancer

摘　　要：背景与目的:脑胶质瘤是神经系统常见肿瘤,其发病机制尚不清楚。本研究运用基于PCR的消减杂交法克隆脑胶质瘤肿瘤相关基因和抑癌候选基因,并探讨胶质瘤的分子生物学发病机制。方法:从人脑胶质瘤组织标本中提取mRNA,反转录成cDNA,然后采用基于PCR的消减杂交法克隆脑胶质瘤肿瘤相关基因和抑癌基因。结果:在肿瘤相关候选基因组克隆到人星形细胞内富含的磷酸蛋白PEA15(phosphoproteinenrichedinastrocytesof15)和酸性纤维蛋白生长因子(acidfibroblastgrowthfactor,aFGF)同源物等基因,在抑癌候选基因组克隆到干扰素诱导蛋白17和ndr2等。ndr2在正常脑组织中广泛表达,在胶质瘤组织内无表达。结论:ndr2基因是抑癌候选基因,可能在胶质瘤的发生中起一定作用。BACKGROUND & OBJECTIVE: Glioma is a common tumor in central nervous system with no specific clinical therapy. Its pathogenesis is unclear. This study was to clone tumor-related genes and tumor suppressor genes in glioma with polymerase chain reaction (PCR)-based subtractive hybridization, and to explore the molecular biological mechanism of tumorigenesis of glioma. METHODS: mRNA was isolated from a sample of human glioma, and reversely transcribed into cDNA. PCR-based subtractive hybridization was used to clone tumor-related genes and tumor suppressor genes from it. RESULTS: In tumor-related candidate gene group, phospho-protein enriched in astrocytes of 15 (PEA15) and homology of acid fibroblast growth factor (aFGF) were picked up. Whereas, in tumor suppressor gene group, interferon-induced protein 17 and ndr2 were picked up. ndr2 was widely expressed in normal brain tissue, but absent in glioma tissue. CONCLUSION: ndr2 gene is a candidate tumor suppressor gene, and may play a role in tumorigenesis of glioma.

关 键 词：胶质瘤 PCR 消减杂交 肿瘤相关基因 抑癌基因 

分 类 号：R739.4[医药卫生—肿瘤]