Dysregulation of post-transcriptional regulation of gene expression has been found to influence various human disorders. Aberrant miRNA-based regulation of gene expression has been found to be associated with differen...Dysregulation of post-transcriptional regulation of gene expression has been found to influence various human disorders. Aberrant miRNA-based regulation of gene expression has been found to be associated with different cancers, including breast cancers. Very little information is available on the effect of dysregulation of miRNA-mediated regulation on luminal B breast cancer. This study was aimed at comprehending the regulation of gene expression through miRNA in luminal B breast cancers by comprehensive analysis of miRNA and mRNA expression data together. Negatively regulated miRNA-target gene pairs were identified, and the target genes were functionally enriched to identify critical pathways associated with luminal B breast cancer. Further, the prognostic significance of these miRNAs and target gene pairs was assessed to identify genes with prognostic value in luminal B breast cancer. A total of 266 differentially expressed miRNAs and 164 dysregulated miRNA-target gene pairs were identified. Four genes, including SRP9, DSN1, RACGAP1, and SLC10A6, and one miRNA, hsa-mir-421, showed significant influence on the prognosis of patients with luminal B breast cancer. Through additional experimental examination of these findings, a deeper comprehension of miRNA-based post-transcriptional regulation in luminal B breast tumors will be possible.展开更多
以高耐热玉米品种郑单958、低耐热玉米品种先玉335为材料,以正常生长条件为对照,在花期进行高温胁迫,通过miRNA高通量测序筛选玉米花粉中的差异表达miRNA,然后预测其靶基因,并对靶基因的本体特征和代谢通路进行富集分析。结果表明,共筛...以高耐热玉米品种郑单958、低耐热玉米品种先玉335为材料,以正常生长条件为对照,在花期进行高温胁迫,通过miRNA高通量测序筛选玉米花粉中的差异表达miRNA,然后预测其靶基因,并对靶基因的本体特征和代谢通路进行富集分析。结果表明,共筛选到818个miRNA前体序列。在郑单958高温胁迫花粉与对照花粉对比组(HT958 vs CK958)中共筛选到19个显著差异表达miRNA序列,其中15个miRNA序列上调表达,4个下调表达,3个miRNA序列达到极显著水平(P<0.01)。对这19个显著差异表达miRNA的靶基因进行预测,共获得了503个基因转录本,其富集较多的GO生物学过程条目分别为转录调控DNA-模板、微管生物学过程、磷酸化作用、RNA聚合酶Ⅱ正向调控转录过程、甲基化作用等,KEGG富集较显著的代谢通路分别是谷胱甘肽代谢、碳代谢、花生四烯酸代谢、糖酵解/糖异生、叶酸生物合成等。在先玉335高温胁迫花粉与对照花粉对比组(HT335 vs CK335)中共筛选到15个显著差异表达miRNA序列,其中7个miRNA序列上调表达,8个下调表达,1个miRNA序列达到了极显著水平(P<0.01)。对这15个显著差异表达miRNA的靶基因进行预测,共获得了454个基因转录本,其富集较多的GO生物学过程条目分别为转录调控DNA-模板、磷酸化作用、蛋白质磷酸化作用、蛋白质水解、DNA修复等,富集较显著的KEGG代谢通路分别是其他多糖降解、亚油酸代谢、代谢通路、硫胺素代谢、内质网内蛋白质加工过程等。在郑单958高温胁迫花粉与先玉335高温胁迫花粉对比组(HT985 vs HT335)中共筛选到85个显著差异表达miRNA序列,其中35个miRNA序列为上调表达,50个为下调表达,24个miRNA序列达到了极显著水平(P<0.01)。对这85个显著差异表达miRNA的靶基因进行预测,共获得了2 286个基因转录本,其富集较多的GO生物学过程条目分别为转录调控DNA-模板、磷酸化作用、蛋白质磷酸化、蛋白质水解、跨膜转运等,富集较显著的代谢通路分别是鞘脂类代谢、淀粉和蔗糖代谢、其他多糖降解、代谢通路、半胱氨酸及甲硫氨酸代谢等。在HT958 vs CK958与HT335 vs CK335对比组中共筛选到94个显著差异表达miRNA序列,其中(预测全新)PC-3p-10069_1143、(预测全新)PC-3p-18335_646、(玉米)zma-miR164f-5p等28个miRNA序列达到了极显著水平(P<0.01)。对这94个显著差异表达miRNA的靶基因进行预测,共获得了4 569个基因转录本,其富集较多的GO生物学过程条目分别为转录调控DNA-模板、磷酸化作用、蛋白质磷酸化、蛋白质转运、蛋白质水解等,其富集较显著的KEGG代谢通路分别是内质网内蛋白质加工过程、真核生物核糖体生物合成、剪接体、鞘脂类代谢、内吞作用等。展开更多
文摘Dysregulation of post-transcriptional regulation of gene expression has been found to influence various human disorders. Aberrant miRNA-based regulation of gene expression has been found to be associated with different cancers, including breast cancers. Very little information is available on the effect of dysregulation of miRNA-mediated regulation on luminal B breast cancer. This study was aimed at comprehending the regulation of gene expression through miRNA in luminal B breast cancers by comprehensive analysis of miRNA and mRNA expression data together. Negatively regulated miRNA-target gene pairs were identified, and the target genes were functionally enriched to identify critical pathways associated with luminal B breast cancer. Further, the prognostic significance of these miRNAs and target gene pairs was assessed to identify genes with prognostic value in luminal B breast cancer. A total of 266 differentially expressed miRNAs and 164 dysregulated miRNA-target gene pairs were identified. Four genes, including SRP9, DSN1, RACGAP1, and SLC10A6, and one miRNA, hsa-mir-421, showed significant influence on the prognosis of patients with luminal B breast cancer. Through additional experimental examination of these findings, a deeper comprehension of miRNA-based post-transcriptional regulation in luminal B breast tumors will be possible.
文摘以高耐热玉米品种郑单958、低耐热玉米品种先玉335为材料,以正常生长条件为对照,在花期进行高温胁迫,通过miRNA高通量测序筛选玉米花粉中的差异表达miRNA,然后预测其靶基因,并对靶基因的本体特征和代谢通路进行富集分析。结果表明,共筛选到818个miRNA前体序列。在郑单958高温胁迫花粉与对照花粉对比组(HT958 vs CK958)中共筛选到19个显著差异表达miRNA序列,其中15个miRNA序列上调表达,4个下调表达,3个miRNA序列达到极显著水平(P<0.01)。对这19个显著差异表达miRNA的靶基因进行预测,共获得了503个基因转录本,其富集较多的GO生物学过程条目分别为转录调控DNA-模板、微管生物学过程、磷酸化作用、RNA聚合酶Ⅱ正向调控转录过程、甲基化作用等,KEGG富集较显著的代谢通路分别是谷胱甘肽代谢、碳代谢、花生四烯酸代谢、糖酵解/糖异生、叶酸生物合成等。在先玉335高温胁迫花粉与对照花粉对比组(HT335 vs CK335)中共筛选到15个显著差异表达miRNA序列,其中7个miRNA序列上调表达,8个下调表达,1个miRNA序列达到了极显著水平(P<0.01)。对这15个显著差异表达miRNA的靶基因进行预测,共获得了454个基因转录本,其富集较多的GO生物学过程条目分别为转录调控DNA-模板、磷酸化作用、蛋白质磷酸化作用、蛋白质水解、DNA修复等,富集较显著的KEGG代谢通路分别是其他多糖降解、亚油酸代谢、代谢通路、硫胺素代谢、内质网内蛋白质加工过程等。在郑单958高温胁迫花粉与先玉335高温胁迫花粉对比组(HT985 vs HT335)中共筛选到85个显著差异表达miRNA序列,其中35个miRNA序列为上调表达,50个为下调表达,24个miRNA序列达到了极显著水平(P<0.01)。对这85个显著差异表达miRNA的靶基因进行预测,共获得了2 286个基因转录本,其富集较多的GO生物学过程条目分别为转录调控DNA-模板、磷酸化作用、蛋白质磷酸化、蛋白质水解、跨膜转运等,富集较显著的代谢通路分别是鞘脂类代谢、淀粉和蔗糖代谢、其他多糖降解、代谢通路、半胱氨酸及甲硫氨酸代谢等。在HT958 vs CK958与HT335 vs CK335对比组中共筛选到94个显著差异表达miRNA序列,其中(预测全新)PC-3p-10069_1143、(预测全新)PC-3p-18335_646、(玉米)zma-miR164f-5p等28个miRNA序列达到了极显著水平(P<0.01)。对这94个显著差异表达miRNA的靶基因进行预测,共获得了4 569个基因转录本,其富集较多的GO生物学过程条目分别为转录调控DNA-模板、磷酸化作用、蛋白质磷酸化、蛋白质转运、蛋白质水解等,其富集较显著的KEGG代谢通路分别是内质网内蛋白质加工过程、真核生物核糖体生物合成、剪接体、鞘脂类代谢、内吞作用等。
