目的对结直肠癌5-FU敏感相关基因的临床资料进行分析,为寻找5-FU敏感相关关键基因提供参考。方法以Embase、Pubmed为文献检索数据库,对纳入的105篇文献分别对其出版年、国家、期刊、研究机构、作者及所研究基因进行计量学与生物信息学...目的对结直肠癌5-FU敏感相关基因的临床资料进行分析,为寻找5-FU敏感相关关键基因提供参考。方法以Embase、Pubmed为文献检索数据库,对纳入的105篇文献分别对其出版年、国家、期刊、研究机构、作者及所研究基因进行计量学与生物信息学分析。结果结直肠癌5-FU敏感相关基因文章在发表年限上呈波动式分布;发文量最多的国家、期刊、机构、作者分别为USA、Clin Cancer Res、University of Southern California;W.Ichikawa;其中TYMS是最为热点的基因(36篇);105篇文献共涉及57个结直肠癌5-FU敏感相关基因,其蛋白主要涉及细胞增殖、细胞周期调控、细胞周期等。Hub基因共有21个,bottleneck基因有16个。结论结直肠癌5-FU敏感相关基因已形成多基因预测模型趋势,TP53、YMS等基因在结直肠癌5-FU疗效预测中可能起关键作用。展开更多
Objective:We aimed to perform a preliminary study of the association between induced pluripotent stem cell(iPS)-related genes and biological behavior of human colorectal cancer(CRC) cells,and the potential for develop...Objective:We aimed to perform a preliminary study of the association between induced pluripotent stem cell(iPS)-related genes and biological behavior of human colorectal cancer(CRC) cells,and the potential for developing anti-cancer drugs targeting these genes.Methods:We used real-time reverse transcriptase polymerase chain reaction(RT-PCR) to evaluate the transcript levels of iPS-related genes NANOG,OCT4,SOX2,C-MYC and KLF4 in CRC cell lines and cancer stem cells(CSCs)-enriched tumor spheres.NANOG was knockdowned in CRC cell line SW620 by lentiviral transduction.3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT) assays,plate colony formation,and a mouse xenograft model were used to evaluate alterations in biological behavior in NANOG-knockdown SW620 cells.Also,mock-knockdown and NANOG-knockdown cells were treated with 5-fluorouracil(5-FU) and survival rate was measured by MTT assay to evaluate drug sensitivity.Results:A significant difference in the transcript levels of iPS-related genes between tumor spheres and their parental bulky cells was observed.NANOG knockdown suppressed proliferation,colony formation,and in vivo tumorigenicity but increased the sensitivity to 5-FU of SW620 cells.5-FU treatment greatly inhibited the expression of the major stemness-associated genes NANOG,OCT4,and SOX2.Conclusions:These results collectively suggest an overlap between iPS-related genes and CSCs in CRC.Quenching a certain gene NANOG may truncate the aggressiveness of CRC cells.展开更多
文摘目的对结直肠癌5-FU敏感相关基因的临床资料进行分析,为寻找5-FU敏感相关关键基因提供参考。方法以Embase、Pubmed为文献检索数据库,对纳入的105篇文献分别对其出版年、国家、期刊、研究机构、作者及所研究基因进行计量学与生物信息学分析。结果结直肠癌5-FU敏感相关基因文章在发表年限上呈波动式分布;发文量最多的国家、期刊、机构、作者分别为USA、Clin Cancer Res、University of Southern California;W.Ichikawa;其中TYMS是最为热点的基因(36篇);105篇文献共涉及57个结直肠癌5-FU敏感相关基因,其蛋白主要涉及细胞增殖、细胞周期调控、细胞周期等。Hub基因共有21个,bottleneck基因有16个。结论结直肠癌5-FU敏感相关基因已形成多基因预测模型趋势,TP53、YMS等基因在结直肠癌5-FU疗效预测中可能起关键作用。
基金Project supported by the National Natural Science Foundation of China (No.30973382)the Zhejiang Provincial International Scientific Technology Collaboration Key Project (No.2009C14010)
文摘Objective:We aimed to perform a preliminary study of the association between induced pluripotent stem cell(iPS)-related genes and biological behavior of human colorectal cancer(CRC) cells,and the potential for developing anti-cancer drugs targeting these genes.Methods:We used real-time reverse transcriptase polymerase chain reaction(RT-PCR) to evaluate the transcript levels of iPS-related genes NANOG,OCT4,SOX2,C-MYC and KLF4 in CRC cell lines and cancer stem cells(CSCs)-enriched tumor spheres.NANOG was knockdowned in CRC cell line SW620 by lentiviral transduction.3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT) assays,plate colony formation,and a mouse xenograft model were used to evaluate alterations in biological behavior in NANOG-knockdown SW620 cells.Also,mock-knockdown and NANOG-knockdown cells were treated with 5-fluorouracil(5-FU) and survival rate was measured by MTT assay to evaluate drug sensitivity.Results:A significant difference in the transcript levels of iPS-related genes between tumor spheres and their parental bulky cells was observed.NANOG knockdown suppressed proliferation,colony formation,and in vivo tumorigenicity but increased the sensitivity to 5-FU of SW620 cells.5-FU treatment greatly inhibited the expression of the major stemness-associated genes NANOG,OCT4,and SOX2.Conclusions:These results collectively suggest an overlap between iPS-related genes and CSCs in CRC.Quenching a certain gene NANOG may truncate the aggressiveness of CRC cells.
