目的探讨EBV mi R-BART17-3p影响原发免疫性血小板减少症(ITP)患儿Treg/Th17平衡的机制。方法收集ITP患儿(ITP组,20例)和健康儿童(对照组,20例)外周血并分离CD_(4)^(+)T细胞。采用实时荧光定量聚合酶链式反应法、Western blot法、酶联...目的探讨EBV mi R-BART17-3p影响原发免疫性血小板减少症(ITP)患儿Treg/Th17平衡的机制。方法收集ITP患儿(ITP组,20例)和健康儿童(对照组,20例)外周血并分离CD_(4)^(+)T细胞。采用实时荧光定量聚合酶链式反应法、Western blot法、酶联免疫吸附法检测EBV mi R-BART17-3p、T细胞免疫球蛋白黏蛋白3(Tim-3)、叉头框蛋白P3(Fox P3)、白细胞介素17A(IL-17A)和转化生长因子-β(TGF-β)的m RNA、蛋白表达水平及含量。采用双荧光素酶报告基因实验考察EBV mi R-BART17-3p对Tim-3表达水平的影响。将15只BALB/C小鼠随机分为空白对照组、模型组、观察组,各5只。腹腔注射抗血小板抗体MWReg30以复制ITP小鼠模型,建模4 d后观察组小鼠予尾静脉注射携带EBV mi R-BART17-3p inhibitor的腺病毒载体。细胞染色并观察形态,检测外周血中TGF-β、IL-17A含量及血小板计数,采用流式细胞仪分别检测CD_(4)^(+)T细胞中Th17和Treg水平,并计算二者百分比。结果与对照组比较,ITP组患儿外周血EBV mi R-BART17-3p表达水平显著升高,Tim-3和TGF-βm RNA表达水平显著降低(P<0.05);Tim-3 m RNA表达水平与EBV mi R-BART17-3p表达水平呈显著负相关(r=-0.732,P<0.001)。Tim-3慢病毒载体p LKO.1-sh-Tim-3(sh-Tim-3)可显著降低Tim-3、Fox P3、TGF-β水平(P<0.05)。mi R-BART17-3p mimic显著升高了CD_(4)^(+)T细胞中mi R-BART17-3p的表达水平,并显著降低了Tim-3、Fox P3、TGF-βm RNA和蛋白表达水平(P<0.05);mi R-BART17-3p mimic可显著降低TGF-β含量,Tim-3+mi R-BART17-3p过表达逆转了mi R-BART17-3p mimic对TGF-β的抑制作用。动物实验结果显示,沉默EBV mi R-BART17-3p可促进Treg分化,减少脾脏和骨髓组织中的巨核细胞计数,并显著增加外周血中血小板计数。结论EBV mi R-BART17-3p可通过Fox P3/Tim-3途径调节ITP患儿Treg/Th17的免疫失衡。展开更多
目的研究肺腺癌(lung adenocarcinoma,LA)患者血清中微核糖核酸(miRNA)在肺腺癌患者及正常人群组血清中的表达水平,分析其在肺腺癌诊断中的临床价值。方法收集60例肺腺癌及40例正常人群血清,通过实时荧光定量聚合酶链反应(quantitative ...目的研究肺腺癌(lung adenocarcinoma,LA)患者血清中微核糖核酸(miRNA)在肺腺癌患者及正常人群组血清中的表达水平,分析其在肺腺癌诊断中的临床价值。方法收集60例肺腺癌及40例正常人群血清,通过实时荧光定量聚合酶链反应(quantitative real time PCR,qRT PCR)检测各组血清miR-498,miR-339-5p和miR-210-3p的表达情况。统计分析各组miRNA的表达差异以及单个miRNA在肺腺癌诊断中的价值,进一步用统计学方法分析三者联合检测的诊断价值。结果相比正常人群,肺腺癌患者血清中miR-210-3p表达增加(6.41±1.85 vs 4.52±1.45),miR-498(2.09±0.88vs 3.01±0.69)和miR-339-5p(0.8±0.53 vs 1.24±0.58)表达下降,差异有统计学意义(t=4.72,1.34,2.75,均P<0.05)。受试者工作特征曲线下面积(AUC)分析结果显示,miR-498,miR-339-5p和miR-210-3p的AUC分别为0.788(95%CI0.695~0.864),0.715(95%CI 0.616~0.801)和0.799(95%CI 0.707~0.872);三者联合检测在肺腺癌诊断中AUC值为0.902(95%CI 0.826~0.952),三者联合检测优于单个miRNA的检测,差异有统计学意义(t=14.09~18.65,均P<0.05)。结论miR-498,miR-339-5p和miR-210-3p在肺腺癌患者血清中的表达情况改变,对肺腺癌具有一定的临床诊断价值。展开更多
AIM To investigate the potential role of micro RNA-30 a(mi R-30 a) in esophageal squamous cell carcinoma(ESCC).METHODS Expression of mi R-30 a-3 p/5 p was analyzed using microarray data and fresh ESCC tissue samples. ...AIM To investigate the potential role of micro RNA-30 a(mi R-30 a) in esophageal squamous cell carcinoma(ESCC).METHODS Expression of mi R-30 a-3 p/5 p was analyzed using microarray data and fresh ESCC tissue samples. Both in vitro and in vivo assays were used to investigate the effects of mi R-30 a-3 p/5 p on ESCC cell proliferation. Furthermore,Kyoto Encyclopedia of Genes and Genomes analysis was performed to explore underlying mechanisms involved in ESCC,and then,assays were carried out to verify the potential molecular mechanism of mi R-30 a in ESCC.RESULTS Low expression of mi R-30 a-3 p/5 p was closely associated with advanced ESCC progression and poor prognosis of patients with ESCC. Knock-down of mi R-30 a-3 p/5 p promoted ESCC cell proliferation. Increased mi R-30 a-3 p/5 p expression inhibited the Wnt signaling pathway by targeting Wnt2 and Fzd2.CONCLUSION Down-regulation of mi R-30 a-3 p/5 p promotes ESCC cell proliferation by activating the Wnt signaling pathway through inhibition of Wnt2 and Fzd2.展开更多
目的:观察mi R-409-3b对胃癌细胞侵袭转移的影响,探讨mi R-409-3b通过下调表皮生长因子蛋白7(epidermal growth factor like domain protein 7,EGFL7)调节胃癌侵袭和转移的具体机制.方法:通过基因芯片技术筛选出胃癌及癌旁组织差异性表...目的:观察mi R-409-3b对胃癌细胞侵袭转移的影响,探讨mi R-409-3b通过下调表皮生长因子蛋白7(epidermal growth factor like domain protein 7,EGFL7)调节胃癌侵袭和转移的具体机制.方法:通过基因芯片技术筛选出胃癌及癌旁组织差异性表达的微小RNA(micro RNA m i R N A);采用生物学信息学技术预测E G F L7调控相关m i R N A,通过对比上述结果,筛选出mi R-409-3b;进一步以mi R-4093b慢病毒及mi R-409-3b mimics过表达mi R-409-3b后,用Western blot检测胃癌细胞中的EGFL7的表达变化;采用Transwell侵袭实验及划痕实验检测mi R-409-3b慢病毒感染后细胞体外侵袭能力的变化;q RT-PCR检测80例胃癌患者癌组织和癌旁组织中mi R-409-3b的表达差异,并分析mi R-409-3b的表达与胃癌患者临床病理之间的关系.结果:基因芯片及生物信息学预测发现m i R-409-3b在胃癌组织中低表达,同时又可能调控E G F L7,双荧光素酶实验证实m i R-409-3b可以结合在E G F L7上,m i R-409-3b慢病毒及mi R-409-3b mimics过表达m i R-409-3b都能在蛋白水平下调E G F L7;m i R-409-3b家族3条m i R N A的q RT-P C R结果表明癌旁组织相对含量高于胃癌组织;Tr a n s w e l l侵袭实验结果表明:m i R-409-3b与感染空载慢病毒相比感染能显著降低胃癌细胞穿的能力.体外划痕实验的结果表明,经LV-mi R-409-3b感染空载慢病毒比BGC-823细胞的迁移能力明显升高.进一步统计结果表明,mi R-409-3b与淋巴结转移有关(P<0.05),mi R-409-3b的C/P值在无远处转移的病例组织比具有远处转移的病例组织中明显升高(P<0.05).结论:mi R-409-3b可以在转录后水平调控EGFL7的表达,从而抑制胃癌细胞的侵袭和转移.展开更多
AIM To evaluate the levels of mi R-192-5 p in non-alcoholic fatty liver disease(NAFLD) models and demonstrate the role of mi R-192-5 p in lipid accumulation. METHODS Thirty Sprague Dawley rats were randomly divided in...AIM To evaluate the levels of mi R-192-5 p in non-alcoholic fatty liver disease(NAFLD) models and demonstrate the role of mi R-192-5 p in lipid accumulation. METHODS Thirty Sprague Dawley rats were randomly divided into three groups, which were given a standard diet, a high-fat diet(HFD), and an HFD with injection of liraglutide. At the end of 16 weeks, hepatic mi R-192-5 p and stearoyl-Co A desaturase 1(SCD-1) levels were measured. Mi R-192-5 p mimic and inhibitor and SCD-1 si RNA were transfected into Huh7 cells exposed to palmitic acid(PA). Lipid accumulation was evaluated by oil red O staining and triglyceride assays. Direct interaction was validated by dual-luciferase reporter gene assays.RESULTS The HFD rats showed a 0.46-fold decrease and a 3.5-fold increase in hepatic mi R-192-5 p and SCD-1 protein levels compared with controls, respectively, which could be reversed after disease remission by liraglutide injection(P < 0.01). The Huh7 cells exposed to PA also showed down-regulation and up-regulation of mi R-192-5 p and SCD-1 protein levels, respectively(P < 0.01). Transfection with mi R-192-5 p mimic and inhibitor in Huh7 cells induced dramatic repression and promotion of SCD-1 protein levels, respectively(P < 0.01). Luciferase activity was suppressed and enhanced by mi R-192-5 p mimic and inhibitor, respectively, in wild-type SCD-1(P < 0.01) but not in mutant SCD-1. Mi R-192-5 p overexpression reduced lipid accumulation significantly in PA-treated Huh7 cells, and SCD-1 si RNA transfection abrogated the lipid deposition aggravated by mi R-192-5 p inhibitor(P < 0.01).CONCLUSION This study demonstrates that mi R-192-5 p has a negative regulatory role in lipid synthesis, which is mediated through its direct regulation of SCD-1.展开更多
文摘目的探讨EBV mi R-BART17-3p影响原发免疫性血小板减少症(ITP)患儿Treg/Th17平衡的机制。方法收集ITP患儿(ITP组,20例)和健康儿童(对照组,20例)外周血并分离CD_(4)^(+)T细胞。采用实时荧光定量聚合酶链式反应法、Western blot法、酶联免疫吸附法检测EBV mi R-BART17-3p、T细胞免疫球蛋白黏蛋白3(Tim-3)、叉头框蛋白P3(Fox P3)、白细胞介素17A(IL-17A)和转化生长因子-β(TGF-β)的m RNA、蛋白表达水平及含量。采用双荧光素酶报告基因实验考察EBV mi R-BART17-3p对Tim-3表达水平的影响。将15只BALB/C小鼠随机分为空白对照组、模型组、观察组,各5只。腹腔注射抗血小板抗体MWReg30以复制ITP小鼠模型,建模4 d后观察组小鼠予尾静脉注射携带EBV mi R-BART17-3p inhibitor的腺病毒载体。细胞染色并观察形态,检测外周血中TGF-β、IL-17A含量及血小板计数,采用流式细胞仪分别检测CD_(4)^(+)T细胞中Th17和Treg水平,并计算二者百分比。结果与对照组比较,ITP组患儿外周血EBV mi R-BART17-3p表达水平显著升高,Tim-3和TGF-βm RNA表达水平显著降低(P<0.05);Tim-3 m RNA表达水平与EBV mi R-BART17-3p表达水平呈显著负相关(r=-0.732,P<0.001)。Tim-3慢病毒载体p LKO.1-sh-Tim-3(sh-Tim-3)可显著降低Tim-3、Fox P3、TGF-β水平(P<0.05)。mi R-BART17-3p mimic显著升高了CD_(4)^(+)T细胞中mi R-BART17-3p的表达水平,并显著降低了Tim-3、Fox P3、TGF-βm RNA和蛋白表达水平(P<0.05);mi R-BART17-3p mimic可显著降低TGF-β含量,Tim-3+mi R-BART17-3p过表达逆转了mi R-BART17-3p mimic对TGF-β的抑制作用。动物实验结果显示,沉默EBV mi R-BART17-3p可促进Treg分化,减少脾脏和骨髓组织中的巨核细胞计数,并显著增加外周血中血小板计数。结论EBV mi R-BART17-3p可通过Fox P3/Tim-3途径调节ITP患儿Treg/Th17的免疫失衡。
文摘目的研究肺腺癌(lung adenocarcinoma,LA)患者血清中微核糖核酸(miRNA)在肺腺癌患者及正常人群组血清中的表达水平,分析其在肺腺癌诊断中的临床价值。方法收集60例肺腺癌及40例正常人群血清,通过实时荧光定量聚合酶链反应(quantitative real time PCR,qRT PCR)检测各组血清miR-498,miR-339-5p和miR-210-3p的表达情况。统计分析各组miRNA的表达差异以及单个miRNA在肺腺癌诊断中的价值,进一步用统计学方法分析三者联合检测的诊断价值。结果相比正常人群,肺腺癌患者血清中miR-210-3p表达增加(6.41±1.85 vs 4.52±1.45),miR-498(2.09±0.88vs 3.01±0.69)和miR-339-5p(0.8±0.53 vs 1.24±0.58)表达下降,差异有统计学意义(t=4.72,1.34,2.75,均P<0.05)。受试者工作特征曲线下面积(AUC)分析结果显示,miR-498,miR-339-5p和miR-210-3p的AUC分别为0.788(95%CI0.695~0.864),0.715(95%CI 0.616~0.801)和0.799(95%CI 0.707~0.872);三者联合检测在肺腺癌诊断中AUC值为0.902(95%CI 0.826~0.952),三者联合检测优于单个miRNA的检测,差异有统计学意义(t=14.09~18.65,均P<0.05)。结论miR-498,miR-339-5p和miR-210-3p在肺腺癌患者血清中的表达情况改变,对肺腺癌具有一定的临床诊断价值。
基金Supported by the Youth Fund of the First Affiliated Hospital of Xinxiang Medical University(Type A-4)
文摘AIM To investigate the potential role of micro RNA-30 a(mi R-30 a) in esophageal squamous cell carcinoma(ESCC).METHODS Expression of mi R-30 a-3 p/5 p was analyzed using microarray data and fresh ESCC tissue samples. Both in vitro and in vivo assays were used to investigate the effects of mi R-30 a-3 p/5 p on ESCC cell proliferation. Furthermore,Kyoto Encyclopedia of Genes and Genomes analysis was performed to explore underlying mechanisms involved in ESCC,and then,assays were carried out to verify the potential molecular mechanism of mi R-30 a in ESCC.RESULTS Low expression of mi R-30 a-3 p/5 p was closely associated with advanced ESCC progression and poor prognosis of patients with ESCC. Knock-down of mi R-30 a-3 p/5 p promoted ESCC cell proliferation. Increased mi R-30 a-3 p/5 p expression inhibited the Wnt signaling pathway by targeting Wnt2 and Fzd2.CONCLUSION Down-regulation of mi R-30 a-3 p/5 p promotes ESCC cell proliferation by activating the Wnt signaling pathway through inhibition of Wnt2 and Fzd2.
文摘目的:观察mi R-409-3b对胃癌细胞侵袭转移的影响,探讨mi R-409-3b通过下调表皮生长因子蛋白7(epidermal growth factor like domain protein 7,EGFL7)调节胃癌侵袭和转移的具体机制.方法:通过基因芯片技术筛选出胃癌及癌旁组织差异性表达的微小RNA(micro RNA m i R N A);采用生物学信息学技术预测E G F L7调控相关m i R N A,通过对比上述结果,筛选出mi R-409-3b;进一步以mi R-4093b慢病毒及mi R-409-3b mimics过表达mi R-409-3b后,用Western blot检测胃癌细胞中的EGFL7的表达变化;采用Transwell侵袭实验及划痕实验检测mi R-409-3b慢病毒感染后细胞体外侵袭能力的变化;q RT-PCR检测80例胃癌患者癌组织和癌旁组织中mi R-409-3b的表达差异,并分析mi R-409-3b的表达与胃癌患者临床病理之间的关系.结果:基因芯片及生物信息学预测发现m i R-409-3b在胃癌组织中低表达,同时又可能调控E G F L7,双荧光素酶实验证实m i R-409-3b可以结合在E G F L7上,m i R-409-3b慢病毒及mi R-409-3b mimics过表达m i R-409-3b都能在蛋白水平下调E G F L7;m i R-409-3b家族3条m i R N A的q RT-P C R结果表明癌旁组织相对含量高于胃癌组织;Tr a n s w e l l侵袭实验结果表明:m i R-409-3b与感染空载慢病毒相比感染能显著降低胃癌细胞穿的能力.体外划痕实验的结果表明,经LV-mi R-409-3b感染空载慢病毒比BGC-823细胞的迁移能力明显升高.进一步统计结果表明,mi R-409-3b与淋巴结转移有关(P<0.05),mi R-409-3b的C/P值在无远处转移的病例组织比具有远处转移的病例组织中明显升高(P<0.05).结论:mi R-409-3b可以在转录后水平调控EGFL7的表达,从而抑制胃癌细胞的侵袭和转移.
基金Supported by National Key R&D Program of China No.2017YFC0908900National Key Basic Research Project,No.2012CB517501National Natural Science Foundation of China,No.81470840 and No.81600464
文摘AIM To evaluate the levels of mi R-192-5 p in non-alcoholic fatty liver disease(NAFLD) models and demonstrate the role of mi R-192-5 p in lipid accumulation. METHODS Thirty Sprague Dawley rats were randomly divided into three groups, which were given a standard diet, a high-fat diet(HFD), and an HFD with injection of liraglutide. At the end of 16 weeks, hepatic mi R-192-5 p and stearoyl-Co A desaturase 1(SCD-1) levels were measured. Mi R-192-5 p mimic and inhibitor and SCD-1 si RNA were transfected into Huh7 cells exposed to palmitic acid(PA). Lipid accumulation was evaluated by oil red O staining and triglyceride assays. Direct interaction was validated by dual-luciferase reporter gene assays.RESULTS The HFD rats showed a 0.46-fold decrease and a 3.5-fold increase in hepatic mi R-192-5 p and SCD-1 protein levels compared with controls, respectively, which could be reversed after disease remission by liraglutide injection(P < 0.01). The Huh7 cells exposed to PA also showed down-regulation and up-regulation of mi R-192-5 p and SCD-1 protein levels, respectively(P < 0.01). Transfection with mi R-192-5 p mimic and inhibitor in Huh7 cells induced dramatic repression and promotion of SCD-1 protein levels, respectively(P < 0.01). Luciferase activity was suppressed and enhanced by mi R-192-5 p mimic and inhibitor, respectively, in wild-type SCD-1(P < 0.01) but not in mutant SCD-1. Mi R-192-5 p overexpression reduced lipid accumulation significantly in PA-treated Huh7 cells, and SCD-1 si RNA transfection abrogated the lipid deposition aggravated by mi R-192-5 p inhibitor(P < 0.01).CONCLUSION This study demonstrates that mi R-192-5 p has a negative regulatory role in lipid synthesis, which is mediated through its direct regulation of SCD-1.
