目的探讨肿瘤相关抗原中肾因子(midkine,MK)调控的长链非编码RNA(lncRNAs)和微小RNA(miRNAs)对卵巢癌的临床应用价值。方法采用基因芯片(miRNAs芯片和lncRNAs芯片)分析MK过表达的SKOV3-MK细胞及其SKOV3-Con对照细胞中差异的miRNAs和lncR...目的探讨肿瘤相关抗原中肾因子(midkine,MK)调控的长链非编码RNA(lncRNAs)和微小RNA(miRNAs)对卵巢癌的临床应用价值。方法采用基因芯片(miRNAs芯片和lncRNAs芯片)分析MK过表达的SKOV3-MK细胞及其SKOV3-Con对照细胞中差异的miRNAs和lncRNAs,筛选卵巢癌潜在的生物学标志物,并在卵巢癌患者血清和卵巢癌组织中用RT-qPCR进一步验证,结合临床数据,分析其临床应用价值。结果与对照SKOV3-Con细胞相比,MK过表达可以显著促进SKOV3细胞中11个miRNAs和7个lncRNAs的表达(比值>3倍,P<0.01),下调8个miRNAs和13个lncRNAs的表达(比值<0.3,P<0.01)。RT-qPCR验证结果表明,相对于对侧良性卵巢组织,卵巢癌组织中miR489的表达水平显著降低,而HOTAIR则显著升高(P<0.05);卵巢癌患者血清中HOTAIR的表达水平显著高于同年龄段健康人对照组(0.036±0.024 vs 0.019±0.020,P=0.002)。此外,当cut-off值为0.0176时,HOTAIR作为卵巢癌血清筛查指标的AUC ROC为0.749,特异性为66.7%,敏感性为75.6%。结论长链非编码RNA HOTAIR可以作为卵巢癌血清的筛查标志物之一。展开更多
AIM： To investigate the capacity of potentially probiotic strains from six bacterial genera to induce cytokine production alone or in combinations in order to identify potential enhancing or synergistic effects in or...AIM： To investigate the capacity of potentially probiotic strains from six bacterial genera to induce cytokine production alone or in combinations in order to identify potential enhancing or synergistic effects in order to select probiotic bacteria for in vivo purposes.METHODS： Cytokine production in human peripheral blood mononuclear cells （PBMC） in response to stimulation with eleven different potentially probiotic bacterial strains from Streptococcus, Lactobacillus, Bifidobacterium, Lactococcus, L euconostoc a n d Propionibacterium genera was analysed. Production and mRNA expression of TNF-α, IL-12, IFN-y and IL-10 were determined by ELISA and Northern blotting, respectively.RESULTS： All tested bacteria induced TNF-α production. The best inducers of Thl type cytokines IL-12 and IFN-y were Streptococcus and Leuconostoc strains. All BiHdobacterium and Propionibacterium strains induced higher IL-IO production than other studied bacteria. Stimulation of PBMC with any bacterial combinations did not result in enhanced cytokine production suggesting that different bacteria whether gram-positive or gram- negative compete with each other during host cell interactions.CONCLUSION： The probiotic S. thermophilus and Leuconostoc strains are more potent inducers of Thl type cytokines IL-12 and IFN-γ than the probiotic Lactobacillus strains. Bacterial combinations did not result in enhanced cytokine production.展开更多
AIM:To analyze the association of three IL28B single nucleotide polymorphisms with response to therapy in Chilean patients infected with hepatitis C virus CV.METHODS:We studied two groups of patients with chronic CV i...AIM:To analyze the association of three IL28B single nucleotide polymorphisms with response to therapy in Chilean patients infected with hepatitis C virus CV.METHODS:We studied two groups of patients with chronic CV infection genotype 1,under standard combined treatment with pegylated interferon plus ribavirin.One group consisted of 50 patients with sustained virological response,whereas the second group consisted of 49 null responders.In order to analyze the IL28B single nucleotide polymorphisms rs12979860,rs12980275 and rs8099917,samples were used for polymerase chain reaction amplification,and the genotyping was performed by restriction fragment lengthpolymorphism.RESULTS:The IL28B rs12979860 CC,rs12980275 AA and rs8099917 TT genotypes were much more frequently found in patients with sustained virological response compared to null responders 38%,44% and 50% vs 2%,8.2% and 8.2%,respectively.These differences were highly significant in all three cases(P < 0.0001.CONCLUSION:The three IL28B polymorphisms studied are strongly associated with sustained virological response to therapy in Chilean patients with chronic CV genotype 1.展开更多
As a specific gene of fish,cytochrome P450c17-Ⅱ(CYP17-Ⅱ) gene plays a key role in the growth,development and reproduction level of fish.In this study,the single-stranded conformational polymorphism(SSCP) technique w...As a specific gene of fish,cytochrome P450c17-Ⅱ(CYP17-Ⅱ) gene plays a key role in the growth,development and reproduction level of fish.In this study,the single-stranded conformational polymorphism(SSCP) technique was used to characterize polymorphisms within the coding region of CYP17-Ⅱ gene in a population of 75 male Japanese flounder(Paralichthys olivaceus).Three single nucleotide polymorphisms(SNPs) were identified in CYP17-Ⅱ gene of Japanese flounder.They were c.G594A(p.G188R),c.G939A and c.G1502A(p.G490D).SNP1(c.G594A),located in exon 4 of CYP17-Ⅱ gene,was significantly associated with gonadosomatic index(GSI).Individuals with genotype GG of SNP1 had significantly lower GSI(P < 0.05) than those with geno-type AA or AG.SNP2(c.G939A) located at the CpG island of CYP17-Ⅱ gene.The mutation changed the methylation of exon 6.Indi-viduals with genotype AA of SNP2 had significantly lower serum testosterone(T) level and hepatosomatic index(HSI) compared to those with genotype GG.The results suggested that SNP2 could influence the reproductive endocrine of male Japanese flounder.How-ever,the SNP3(c.G1502A) located in exon 9 did not affect the four measured reproductive traits.This study showed that CYP17-Ⅱ gene could be a potentially useful candidate gene for the research of genetic breeding and physiological aspects of Japanese flounder.展开更多
文摘目的探讨肿瘤相关抗原中肾因子(midkine,MK)调控的长链非编码RNA(lncRNAs)和微小RNA(miRNAs)对卵巢癌的临床应用价值。方法采用基因芯片(miRNAs芯片和lncRNAs芯片)分析MK过表达的SKOV3-MK细胞及其SKOV3-Con对照细胞中差异的miRNAs和lncRNAs,筛选卵巢癌潜在的生物学标志物,并在卵巢癌患者血清和卵巢癌组织中用RT-qPCR进一步验证,结合临床数据,分析其临床应用价值。结果与对照SKOV3-Con细胞相比,MK过表达可以显著促进SKOV3细胞中11个miRNAs和7个lncRNAs的表达(比值>3倍,P<0.01),下调8个miRNAs和13个lncRNAs的表达(比值<0.3,P<0.01)。RT-qPCR验证结果表明,相对于对侧良性卵巢组织,卵巢癌组织中miR489的表达水平显著降低,而HOTAIR则显著升高(P<0.05);卵巢癌患者血清中HOTAIR的表达水平显著高于同年龄段健康人对照组(0.036±0.024 vs 0.019±0.020,P=0.002)。此外,当cut-off值为0.0176时,HOTAIR作为卵巢癌血清筛查指标的AUC ROC为0.749,特异性为66.7%,敏感性为75.6%。结论长链非编码RNA HOTAIR可以作为卵巢癌血清的筛查标志物之一。
基金The Research Council for Health of the Academy of Finland,the Sigrid Juselius Foundation and Valio Research Centre
文摘AIM： To investigate the capacity of potentially probiotic strains from six bacterial genera to induce cytokine production alone or in combinations in order to identify potential enhancing or synergistic effects in order to select probiotic bacteria for in vivo purposes.METHODS： Cytokine production in human peripheral blood mononuclear cells （PBMC） in response to stimulation with eleven different potentially probiotic bacterial strains from Streptococcus, Lactobacillus, Bifidobacterium, Lactococcus, L euconostoc a n d Propionibacterium genera was analysed. Production and mRNA expression of TNF-α, IL-12, IFN-y and IL-10 were determined by ELISA and Northern blotting, respectively.RESULTS： All tested bacteria induced TNF-α production. The best inducers of Thl type cytokines IL-12 and IFN-y were Streptococcus and Leuconostoc strains. All BiHdobacterium and Propionibacterium strains induced higher IL-IO production than other studied bacteria. Stimulation of PBMC with any bacterial combinations did not result in enhanced cytokine production suggesting that different bacteria whether gram-positive or gram- negative compete with each other during host cell interactions.CONCLUSION： The probiotic S. thermophilus and Leuconostoc strains are more potent inducers of Thl type cytokines IL-12 and IFN-γ than the probiotic Lactobacillus strains. Bacterial combinations did not result in enhanced cytokine production.
基金Supported by The grant OAIC 394/10(to M.V.)from Hospital Clínico Universidad de Chile
文摘AIM:To analyze the association of three IL28B single nucleotide polymorphisms with response to therapy in Chilean patients infected with hepatitis C virus CV.METHODS:We studied two groups of patients with chronic CV infection genotype 1,under standard combined treatment with pegylated interferon plus ribavirin.One group consisted of 50 patients with sustained virological response,whereas the second group consisted of 49 null responders.In order to analyze the IL28B single nucleotide polymorphisms rs12979860,rs12980275 and rs8099917,samples were used for polymerase chain reaction amplification,and the genotyping was performed by restriction fragment lengthpolymorphism.RESULTS:The IL28B rs12979860 CC,rs12980275 AA and rs8099917 TT genotypes were much more frequently found in patients with sustained virological response compared to null responders 38%,44% and 50% vs 2%,8.2% and 8.2%,respectively.These differences were highly significant in all three cases(P < 0.0001.CONCLUSION:The three IL28B polymorphisms studied are strongly associated with sustained virological response to therapy in Chilean patients with chronic CV genotype 1.
基金supported by the Natural Science Foun-dation of Shandong Province,China(No.ZR2009DQ011)the New Teacher Special Fund of Doctor of the Ministry of Education of China(No.20090132120006)the Postdoctoral Innovative Projects of Shandong Province,China(No.200702039)
文摘As a specific gene of fish,cytochrome P450c17-Ⅱ(CYP17-Ⅱ) gene plays a key role in the growth,development and reproduction level of fish.In this study,the single-stranded conformational polymorphism(SSCP) technique was used to characterize polymorphisms within the coding region of CYP17-Ⅱ gene in a population of 75 male Japanese flounder(Paralichthys olivaceus).Three single nucleotide polymorphisms(SNPs) were identified in CYP17-Ⅱ gene of Japanese flounder.They were c.G594A(p.G188R),c.G939A and c.G1502A(p.G490D).SNP1(c.G594A),located in exon 4 of CYP17-Ⅱ gene,was significantly associated with gonadosomatic index(GSI).Individuals with genotype GG of SNP1 had significantly lower GSI(P < 0.05) than those with geno-type AA or AG.SNP2(c.G939A) located at the CpG island of CYP17-Ⅱ gene.The mutation changed the methylation of exon 6.Indi-viduals with genotype AA of SNP2 had significantly lower serum testosterone(T) level and hepatosomatic index(HSI) compared to those with genotype GG.The results suggested that SNP2 could influence the reproductive endocrine of male Japanese flounder.How-ever,the SNP3(c.G1502A) located in exon 9 did not affect the four measured reproductive traits.This study showed that CYP17-Ⅱ gene could be a potentially useful candidate gene for the research of genetic breeding and physiological aspects of Japanese flounder.
