目的利用基因表达综合征(gene expressed omnibus,GEO)公共数据库筛选与卵巢癌分期相关的基因,并分析其临床意义。方法从GEO数据库的数据集GSE9891中筛选与临床分期相关差异基因,通过DAVID数据库对差异基因进行基因本体论(gene ontology...目的利用基因表达综合征(gene expressed omnibus,GEO)公共数据库筛选与卵巢癌分期相关的基因,并分析其临床意义。方法从GEO数据库的数据集GSE9891中筛选与临床分期相关差异基因,通过DAVID数据库对差异基因进行基因本体论(gene ontology,GO)和基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)富集分析。并且通过肿瘤基因组图谱(the cancer genome atlas,TCGA)对差异基因进行验证。结果分析数据集GSE9891得到23个与临床分期相关差异基因;GO富集分析发现有效靶基因参与胶原组织和细胞外基质合成;KEGG通路富集分析发现主要通过类固醇合成信号通路影响卵巢癌进展过程。临床分期相关差异基因在TCGA数据库中验证得到LUM、COL11A1、IGF1、TIMP3、COL10A1、FAP、COL8A1、EPYC、SFRP2、FABP4与临床分期相关(P<0.05,|log2FC|>1.5),其中COL8A1、COL11A1、COL10A1、FABP4和SFRP2等五个基因与卵巢癌的预后相关(P<0.05)。结论COL8A1、COL11A1、COL10A1、FABP4和SFRP2可能是影响卵巢癌进展的生物标志物。展开更多
A mRNA preferentially expressed in cotton fiber was cloned from fiber total RNA of normal upland cotton TM-1 (wild-type) by using RT-PCR and corresponding cDNA (signed as TM-E6) was sequenced. TM-E6 gene had no intron...A mRNA preferentially expressed in cotton fiber was cloned from fiber total RNA of normal upland cotton TM-1 (wild-type) by using RT-PCR and corresponding cDNA (signed as TM-E6) was sequenced. TM-E6 gene had no intron and contained an open reading frame of 771 bp long, and might encode a peptide of 246 amino acids. Other 4 genes, Fl-E6, Li-E6, N-E6 and Bl-E6, which were homologous to TM-E6 gene, were also isolated from 4 fiber mutants of Fiberless Xu-zhou 142, Ligon lintless, Naked seed and Brown lint, respectively. Sequence analysis of each of these mutant genes revealed many variations in structure and nu-cleotide composition of gene when compared with the sequence of TM-E6 gene. (i) There was a changeable repetitive segment in which GGCTCA (Gly-Ser) was repeated 3-5 times between the 82nd and the 93rd codons in different mutant genes. Since the change of Gly-Ser repetitive segment occurred not only in the mutants but also in the wild-type cotton, the repeat frequency might not be associated with the展开更多
文摘目的利用基因表达综合征(gene expressed omnibus,GEO)公共数据库筛选与卵巢癌分期相关的基因,并分析其临床意义。方法从GEO数据库的数据集GSE9891中筛选与临床分期相关差异基因,通过DAVID数据库对差异基因进行基因本体论(gene ontology,GO)和基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)富集分析。并且通过肿瘤基因组图谱(the cancer genome atlas,TCGA)对差异基因进行验证。结果分析数据集GSE9891得到23个与临床分期相关差异基因;GO富集分析发现有效靶基因参与胶原组织和细胞外基质合成;KEGG通路富集分析发现主要通过类固醇合成信号通路影响卵巢癌进展过程。临床分期相关差异基因在TCGA数据库中验证得到LUM、COL11A1、IGF1、TIMP3、COL10A1、FAP、COL8A1、EPYC、SFRP2、FABP4与临床分期相关(P<0.05,|log2FC|>1.5),其中COL8A1、COL11A1、COL10A1、FABP4和SFRP2等五个基因与卵巢癌的预后相关(P<0.05)。结论COL8A1、COL11A1、COL10A1、FABP4和SFRP2可能是影响卵巢癌进展的生物标志物。
基金This work was supported by the National Natural Science Foundation of China (Grant Nos. 39770473 and 39830240) and China National Program of Plant Gene Transfer.
文摘A mRNA preferentially expressed in cotton fiber was cloned from fiber total RNA of normal upland cotton TM-1 (wild-type) by using RT-PCR and corresponding cDNA (signed as TM-E6) was sequenced. TM-E6 gene had no intron and contained an open reading frame of 771 bp long, and might encode a peptide of 246 amino acids. Other 4 genes, Fl-E6, Li-E6, N-E6 and Bl-E6, which were homologous to TM-E6 gene, were also isolated from 4 fiber mutants of Fiberless Xu-zhou 142, Ligon lintless, Naked seed and Brown lint, respectively. Sequence analysis of each of these mutant genes revealed many variations in structure and nu-cleotide composition of gene when compared with the sequence of TM-E6 gene. (i) There was a changeable repetitive segment in which GGCTCA (Gly-Ser) was repeated 3-5 times between the 82nd and the 93rd codons in different mutant genes. Since the change of Gly-Ser repetitive segment occurred not only in the mutants but also in the wild-type cotton, the repeat frequency might not be associated with the
