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nm23-H1基因转染前后人大细胞肺癌细胞株抑制消减cDNA文库的构建 被引量:2

Construction of the suppression subtractive cDNA libraries of human large cell lung cancer line L9981 before and after transfection with nm 23-H1 gene
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摘要 背景与目的已有的研究表明,nm23-H1基因是一个重要的肺癌转移抑制基因,为了筛选与该基因表达相关的差异表达基因,本研究拟构建nm23-H1基因转染前后人大细胞肺癌细胞株(L9981和L9981-nm23-H1)差异表达基因的抑制消减cDNA文库,为进一步筛选、克隆与nm23-H1转移相关的基因奠定基础。方法利用抑制消减杂交(suppressive subtractive hybridization,SSH)技术构建nm23-H1基因转染前后人大细胞肺癌细胞株(L9981和L9981-nm23-H1)间差异表达基因的正向和反向消减cDNA文库,经蓝白菌落筛选克隆,并PCR反应鉴定。结果成功构建了该两株细胞株差异表达基因的正向和反向消减cDNA文库。经蓝白菌落筛选,正向消减文库总共获得约300个白斑克隆,反向消减文库总共获得约400个白斑克隆,从正反向消减文库中各挑选96个克隆进行PCR扩增检测是否有插入片段,结果显示在挑选的正向文库中有84个克隆有插入片段,反向文库中有83个克隆有插入片段,其片段大小范围为(300-750)bp。结论抑制消减杂交是克隆差异表达基因的有效方法,我们应用SSH法和T/A克隆技术成功建立了nm23-H1基因转染前后人大细胞肺癌细胞株(L9981和L9981-nm23-H1)差异表达基因的抑制消减cDNA文库。nm23-H1基因在肺癌细胞中的表达可能影响某些转移相关基因的差异表达。 Background and objective It has been proven that nm23-H1 gene is an important metastatic- suppressed gene of lung cancer. In order to screen the differential expression genes related to nm23-H1, we constructed the suppression subtractive cDNA libraries of human large cell lung cancer line L9981 transfected and untransfected with nm23-H1 gene by suppression subtractive hybridization (SSH) in this study, which lay a solid foundation for further screening and cloning metastatic-related genes of nm23-H1. Method...
出处 《中国肺癌杂志》 CAS 2008年第4期482-488,共7页 Chinese Journal of Lung Cancer
基金 国家自然科学基金重点项目(No.30430300) 国家自然科学基金面上项目(No.30571837)资助~~
关键词 肺肿瘤 NM23-H1基因 抑制消减杂交 CDNA文库 转移相关基因 Lung neoplasms nm23-H1 gene Suppression subtractive hybridization cDNA library Metastatic-related gene
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参考文献16

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