Long non-coding RNAs(lncRNAs) play a key role in craniocerebral disease, although their expression profiles in human traumatic brain injury are still unclear. In this regard, in this study, we examined brain injury ti...Long non-coding RNAs(lncRNAs) play a key role in craniocerebral disease, although their expression profiles in human traumatic brain injury are still unclear. In this regard, in this study, we examined brain injury tissue from three patients of the 101 st Hospital of the People's Liberation Army, China(specifically, a 36-year-old male, a 52-year-old female, and a 49-year-old female), who were diagnosed with traumatic brain injury and underwent brain contusion removal surgery. Tissue surrounding the brain contusion in the three patients was used as control tissue to observe expression characteristics of lncRNAs and mRNAs in human traumatic brain injury tissue. Volcano plot filtering identified 99 lncRNAs and 63 mRNAs differentially expressed in frontotemporal tissue of the two groups(P < 0.05, fold change > 1.2). Microarray analysis showed that 43 lncRNAs were up-regulated and 56 lncRNAs were down-regulated. Meanwhile, 59 mRNAs were up-regulated and 4 mRNAs were down-regulated. Gene Ontology(GO) and Kyoto Encyclopedia of Genes and Genomes(KEGG) analyses revealed 27 signaling pathways associated with target genes and, in particular, legionellosis and influenza A signaling pathways. Subsequently, a lncRNA-gene network was generated, which showed an absolute correlation coefficient value > 0.99 for 12 lncRNA-mRNA pairs. Finally, quantitative real-time polymerase chain reaction confirmed different expression of the five most up-regulated mRNAs within the two groups, which was consistent with the microarray results. In summary, our results show that expression profiles of mRNAs and lncRNAs are significantly different between human traumatic brain injury tissue and surrounding tissue, providing novel insight regarding lncRNAs' involvement in human traumatic brain injury. All participants provided informed consent. This research was registered in the Chinese Clinical Trial Registry(registration number: ChiCTR-TCC-13004002) and the protocol version number is 1.0.展开更多
Even though the nitrate assimilation operon has been extensively studied in Phormidium laminosum, some aspects still remain unclear. The genetic manipulation of this cyanobacterium is problematic that hinders the eluc...Even though the nitrate assimilation operon has been extensively studied in Phormidium laminosum, some aspects still remain unclear. The genetic manipulation of this cyanobacterium is problematic that hinders the elucidation of further aspects of nitrogen metabolism. To circumvent this, Thermosynechococcus elongatus BP-1 was selected as a surrogate host and its nirA gene was substituted by the homologous gene of P. laminosum. This process, based on Long Flanking Homology Polymerase Chain Reaction and the natural competence of T. elongatus BP-1, required an intermediate T. elongatus BP-1 ΔnirA::kat mutant, which carries a gene encoding a thermostable kanamycin nucleotidyl transferase in place of nirA_Te. In the presence of nirA_Pl, nirA defective mutants of T. elongatus BP-1 recovered the ability to grow with nitrate as the sole nitrogen source, and showed a phenotype similar to that observed in wild-type cells. The procedure could be useful to substitute other genes from T. elongatus BP-1 with the homologues from P. laminosum in order to study this particular operon. Furthermore, it may be used as a general tool to explore phenotypic changes due to the exchange of a single gene between cyanobacteria.展开更多
目的探究长链非编码RNA UC001kfo在宫颈癌病人中的表达情况及其临床指导意义。方法收集整理2012年4月2日至2017年2月2日云南省第二人民医院不同国际妇产科协会(International Federation of Gynecology and Obstetrics,FIGO)分期手术切...目的探究长链非编码RNA UC001kfo在宫颈癌病人中的表达情况及其临床指导意义。方法收集整理2012年4月2日至2017年2月2日云南省第二人民医院不同国际妇产科协会(International Federation of Gynecology and Obstetrics,FIGO)分期手术切除的宫颈癌及其癌旁组织标本共81例,采用实时荧光定量多聚核苷酸链式反应(qPCR)技术检测UC001kfo表达水平,分析UC001kfo的表达水平与临床病理特征和预后的关系。结果全组病人宫颈癌组织中UC001kfo的表达水平(4.694±1.378)明显高于癌旁组织(1.543±0.598)(P<0.01)。UC001kfo表达水平与宫颈癌病人的FIGO分期、淋巴结转移和肿瘤侵袭关系密切(P<0.05)。Kaplan?Meier分析显示UC001kfo高表达病人的总生存时间明显低于低表达病人(P<0.05)。Cox回归多因素分析显示UC001kfo表达水平、FIGO分期、淋巴结转移和肿瘤侵袭为影响宫颈癌病人总生存时间的独立因素(P<0.05)。结论UC001kfo在宫颈癌组织中高表达,UC001kfo高表达与宫颈癌病人的预后不良有关,UC001kfo或可成为宫颈癌病人潜在的预后标志物。展开更多
基金supported by the National Natural Science Foundation of China,No.81571939(to KX),81601719(to JZ)and 81772134(to KX)Key Research and Development Program of Hunan Province of China,No.2018SK2091(to KX)+1 种基金Wu Jie-Ping Medical Foundation of the Minister of Health of China,No.320.6750.14118(to KX)Teacher Research Foundation of Central South University of China,No.2014JSJJ026(to KX)
文摘Long non-coding RNAs(lncRNAs) play a key role in craniocerebral disease, although their expression profiles in human traumatic brain injury are still unclear. In this regard, in this study, we examined brain injury tissue from three patients of the 101 st Hospital of the People's Liberation Army, China(specifically, a 36-year-old male, a 52-year-old female, and a 49-year-old female), who were diagnosed with traumatic brain injury and underwent brain contusion removal surgery. Tissue surrounding the brain contusion in the three patients was used as control tissue to observe expression characteristics of lncRNAs and mRNAs in human traumatic brain injury tissue. Volcano plot filtering identified 99 lncRNAs and 63 mRNAs differentially expressed in frontotemporal tissue of the two groups(P < 0.05, fold change > 1.2). Microarray analysis showed that 43 lncRNAs were up-regulated and 56 lncRNAs were down-regulated. Meanwhile, 59 mRNAs were up-regulated and 4 mRNAs were down-regulated. Gene Ontology(GO) and Kyoto Encyclopedia of Genes and Genomes(KEGG) analyses revealed 27 signaling pathways associated with target genes and, in particular, legionellosis and influenza A signaling pathways. Subsequently, a lncRNA-gene network was generated, which showed an absolute correlation coefficient value > 0.99 for 12 lncRNA-mRNA pairs. Finally, quantitative real-time polymerase chain reaction confirmed different expression of the five most up-regulated mRNAs within the two groups, which was consistent with the microarray results. In summary, our results show that expression profiles of mRNAs and lncRNAs are significantly different between human traumatic brain injury tissue and surrounding tissue, providing novel insight regarding lncRNAs' involvement in human traumatic brain injury. All participants provided informed consent. This research was registered in the Chinese Clinical Trial Registry(registration number: ChiCTR-TCC-13004002) and the protocol version number is 1.0.
文摘Even though the nitrate assimilation operon has been extensively studied in Phormidium laminosum, some aspects still remain unclear. The genetic manipulation of this cyanobacterium is problematic that hinders the elucidation of further aspects of nitrogen metabolism. To circumvent this, Thermosynechococcus elongatus BP-1 was selected as a surrogate host and its nirA gene was substituted by the homologous gene of P. laminosum. This process, based on Long Flanking Homology Polymerase Chain Reaction and the natural competence of T. elongatus BP-1, required an intermediate T. elongatus BP-1 ΔnirA::kat mutant, which carries a gene encoding a thermostable kanamycin nucleotidyl transferase in place of nirA_Te. In the presence of nirA_Pl, nirA defective mutants of T. elongatus BP-1 recovered the ability to grow with nitrate as the sole nitrogen source, and showed a phenotype similar to that observed in wild-type cells. The procedure could be useful to substitute other genes from T. elongatus BP-1 with the homologues from P. laminosum in order to study this particular operon. Furthermore, it may be used as a general tool to explore phenotypic changes due to the exchange of a single gene between cyanobacteria.
文摘目的探究长链非编码RNA UC001kfo在宫颈癌病人中的表达情况及其临床指导意义。方法收集整理2012年4月2日至2017年2月2日云南省第二人民医院不同国际妇产科协会(International Federation of Gynecology and Obstetrics,FIGO)分期手术切除的宫颈癌及其癌旁组织标本共81例,采用实时荧光定量多聚核苷酸链式反应(qPCR)技术检测UC001kfo表达水平,分析UC001kfo的表达水平与临床病理特征和预后的关系。结果全组病人宫颈癌组织中UC001kfo的表达水平(4.694±1.378)明显高于癌旁组织(1.543±0.598)(P<0.01)。UC001kfo表达水平与宫颈癌病人的FIGO分期、淋巴结转移和肿瘤侵袭关系密切(P<0.05)。Kaplan?Meier分析显示UC001kfo高表达病人的总生存时间明显低于低表达病人(P<0.05)。Cox回归多因素分析显示UC001kfo表达水平、FIGO分期、淋巴结转移和肿瘤侵袭为影响宫颈癌病人总生存时间的独立因素(P<0.05)。结论UC001kfo在宫颈癌组织中高表达,UC001kfo高表达与宫颈癌病人的预后不良有关,UC001kfo或可成为宫颈癌病人潜在的预后标志物。
