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[摘要]
目的 利用基因表达谱芯片研究人参多糖对体外培养的人红白血病K562细胞基因表达谱的影响。方法 人参多糖处理K562细胞48 h后,分别提取给药组和对照组K562细胞总RNA,将两组RNA纯化为mRNA,逆转录成cDNA,用2种不同的荧光染料Cy3和Cy5进行线性扩增标记,与Illumina全基因组表达谱基因芯片杂交,采用生物信息学方法分析人参多糖处理后K562细胞基因表达谱的改变。结果 共发现差异基因306个,其中上调基因220个,下调基因86个,并对其进行生物学功能分类。结论 诱导肿瘤细胞分化是多基因作用的综合结果,筛选的基因对研究肿瘤发生、发展与逆转分化,以及寻找潜在的抗肿瘤药物作用靶点可能有意义。
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[Abstract]
Objective To investigate the effect of ginseng polysaccharide on the gene expression profile of human erythroleukemia K562 cells cultured in vitro. Methods The total RNAs treated with ginseng polysaccharide for 48 h were extracted from both K562 cells and the control K562 cells. All the RNAs were purified into mRNA and then convened to double-stranded cDNAs by reverse transcription. The cDNAs were labeled with a fluorescence dye Cy3 or Cy5 and hybridized to a Illumina whole-genome oligonucleotide microarray. The change in the gene expression profile of K562 cells following treatment with ginseng polysaccharide was analyzed by using bioinformatics. Results A total of 306 differential genes were found. Of which 220 were up-regulated and 86 were down-regulated. Their biologic function was classified. Conclusion Tumor cell differentiation is multiple genes comprehensive results, the screening of the genes may be meaningful for understanding tumorigenesis, tumor development, reverse polarization, and finding potential drug targets.
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[基金项目]
国家自然科学基金资助项目(30873406)