摘要
肿瘤基因组中常有大片段的 DNA扩增 ,鉴定这些扩增片段中的基因是寻找与特定肿瘤发生发展密切相关癌基因的策略之一。通过微阵列比较基因组杂交和限制性内切酶标记位点基因组扫描分析等 ,可以发现肿瘤中扩增的 DNA片段 ,其中所包含的扩增的基因及其 m RNA和蛋白水平的变化可采用定量 PCR和组织芯片免疫组织化学等方法加以检测。筛选出与特定肿瘤相关的扩增基因后 ,使用细胞转染、RNA干扰、c DNA芯片或逆转录多重连接依赖的探针扩增等方法进一步研究将有助于明确目的基因在特定肿瘤发生发展中所起的作用。
Amplification of genomic DNA is often observed in tumors. The identification of genes in amplified regions may be helpful to the discovery of oncogenes associated with a specific tumor. Array-based comparative genomic hybridization and restriction landmark genomic scanning are applicable to the definition of such regions. The copy number alterations of target genes present in these regions and the levels of their mRNA and protein can be characterized by quantitative PCR and tissue microarray staining with immunohistochemistry. Transfection, RNA interference, cDNA microarray or reverse transcription-multiplex ligation-dependent probe amplification will facilitate demonstrating the role of such amplified genes in the pathogenesis of a specific tumor.
出处
《中华医学遗传学杂志》
CAS
CSCD
2004年第5期474-478,共5页
Chinese Journal of Medical Genetics
基金
国家杰出青年科学基金 (30 1 2 50 2 6)
863计划重大专项基金 (2 0 0 2 BA71 1 A0 6 )
教育部高等学校博士学科点基金(2 0 0 1 0 0 2 30 1 6)~~
