目的:探究解旋酶样转录因子(helicase like transcription factor,HLTF)基因在肝细胞癌(hepatocellular carcinoma,HCC)中潜在的调控机制。方法:构建HLTF基因稳定敲除的HCC细胞株。应用RNA测序法(RNA sequencing,RNA-seq)检测并分析肝...目的:探究解旋酶样转录因子(helicase like transcription factor,HLTF)基因在肝细胞癌(hepatocellular carcinoma,HCC)中潜在的调控机制。方法:构建HLTF基因稳定敲除的HCC细胞株。应用RNA测序法(RNA sequencing,RNA-seq)检测并分析肝癌细胞HLTF基因敲除前后的差异表达基因。应用转座酶可及性染色质测序法(assay for transposase-accessible chromatin using sequencing,ATAC-seq)检测HLTF基因敲除前后肝癌细胞染色质可及性的改变。采用RNA-seq和ATAC-seq多组学数据进行联合分析,寻找HLTF基因潜在的下游调控通路和关键基因。结果:癌症基因组图谱(the cancer genome atlas,TCGA)数据库分析表明HLTF基因在HCC组织中的表达水平升高,且其高表达与HCC预后不良有关联;RNA-seq分析结果显示,与野生型肝癌细胞相比,HLTF基因敲除细胞中有563个基因的表达水平上调,656个基因的表达水平下调;ATAC-seq分析结果显示,共27818个区域在HLTF基因缺失时染色质可及性发生显著改变,其中14225个区域染色质可及性增强,13593个区域染色质可及性减弱;对染色质可及性改变的区域进行motif富集分析,数据显示在染色质可及性增强的区域,Atf3、Fra1和BATF等被富集,在染色质可及性减弱的区域,Fra1、Fra2和JunB等被富集;RNA-seq和ATAC-seq多组学数据联合分析表明,重叠基因主要富集在花生四烯酸代谢通路、Wnt信号通路、钙离子信号通路和转化生长因子β(transforming growth factorβ,TGF-β)信号通路等。HLTF基因的缺失使核RNA输出因子3(nuclear RNA export factor 3,NXF3)基因表达水平升高。NXF3基因高表达的HCC患者的预后较NXF3基因低表达的HCC患者好。结论:在HCC中,HLTF基因可能参与调控花生四烯酸代谢通路、Wnt信号通路和TGF-β信号通路等,NXF3基因可能是HLTF基因的潜在下游基因。展开更多
Background: A dandelion is a common plant with a global growth distribution that has been used as a medicinal and food with no adverse effects. Purpose: In this article, the products and effects of dandelions are revi...Background: A dandelion is a common plant with a global growth distribution that has been used as a medicinal and food with no adverse effects. Purpose: In this article, the products and effects of dandelions are reviewed to help further in-depth studies and develop more products derived from dandelions in the future. Method: The literature about dandelion in various databases such as Pubmed is searched. Results: Dandelions have many effects, such as virus inhibition, anti-tumor activity, nutritional value, anti-aging, potential as a vaccine and alleviation of heat stress. The mechanism underlying these effects is analyzed and it was found that dandelions were regulated by RNA or DNA. Conclusion: As a medicinal and food, dandelions are safe and have many effects. Many products derived from dandelions have been developed. The metabolic regulation is related with ribonucleic acid or possibly deoxynucleic acid. Further in-depth studies should be conducted on the regulation of dandelions through RNA or DNA. There will likely be more products derived from dandelions in the future.展开更多
文摘目的:探究解旋酶样转录因子(helicase like transcription factor,HLTF)基因在肝细胞癌(hepatocellular carcinoma,HCC)中潜在的调控机制。方法:构建HLTF基因稳定敲除的HCC细胞株。应用RNA测序法(RNA sequencing,RNA-seq)检测并分析肝癌细胞HLTF基因敲除前后的差异表达基因。应用转座酶可及性染色质测序法(assay for transposase-accessible chromatin using sequencing,ATAC-seq)检测HLTF基因敲除前后肝癌细胞染色质可及性的改变。采用RNA-seq和ATAC-seq多组学数据进行联合分析,寻找HLTF基因潜在的下游调控通路和关键基因。结果:癌症基因组图谱(the cancer genome atlas,TCGA)数据库分析表明HLTF基因在HCC组织中的表达水平升高,且其高表达与HCC预后不良有关联;RNA-seq分析结果显示,与野生型肝癌细胞相比,HLTF基因敲除细胞中有563个基因的表达水平上调,656个基因的表达水平下调;ATAC-seq分析结果显示,共27818个区域在HLTF基因缺失时染色质可及性发生显著改变,其中14225个区域染色质可及性增强,13593个区域染色质可及性减弱;对染色质可及性改变的区域进行motif富集分析,数据显示在染色质可及性增强的区域,Atf3、Fra1和BATF等被富集,在染色质可及性减弱的区域,Fra1、Fra2和JunB等被富集;RNA-seq和ATAC-seq多组学数据联合分析表明,重叠基因主要富集在花生四烯酸代谢通路、Wnt信号通路、钙离子信号通路和转化生长因子β(transforming growth factorβ,TGF-β)信号通路等。HLTF基因的缺失使核RNA输出因子3(nuclear RNA export factor 3,NXF3)基因表达水平升高。NXF3基因高表达的HCC患者的预后较NXF3基因低表达的HCC患者好。结论:在HCC中,HLTF基因可能参与调控花生四烯酸代谢通路、Wnt信号通路和TGF-β信号通路等,NXF3基因可能是HLTF基因的潜在下游基因。
文摘Background: A dandelion is a common plant with a global growth distribution that has been used as a medicinal and food with no adverse effects. Purpose: In this article, the products and effects of dandelions are reviewed to help further in-depth studies and develop more products derived from dandelions in the future. Method: The literature about dandelion in various databases such as Pubmed is searched. Results: Dandelions have many effects, such as virus inhibition, anti-tumor activity, nutritional value, anti-aging, potential as a vaccine and alleviation of heat stress. The mechanism underlying these effects is analyzed and it was found that dandelions were regulated by RNA or DNA. Conclusion: As a medicinal and food, dandelions are safe and have many effects. Many products derived from dandelions have been developed. The metabolic regulation is related with ribonucleic acid or possibly deoxynucleic acid. Further in-depth studies should be conducted on the regulation of dandelions through RNA or DNA. There will likely be more products derived from dandelions in the future.