Background:Hepatocellular carcinoma(HCC)is one of the most prevalent human cancers with high mortality.Long non-coding RNA heart and neural crest derivatives expressed 2 anti-sense 1(HAND2-AS1)is down-regulated in sev...Background:Hepatocellular carcinoma(HCC)is one of the most prevalent human cancers with high mortality.Long non-coding RNA heart and neural crest derivatives expressed 2 anti-sense 1(HAND2-AS1)is down-regulated in several cancers including HCC,yet the precise mechanisms how HAND2-AS1 regulates cell survival in HCC remains poorly understood.Methods:The expression levels of HAND2-AS1 and miR-300 were measured using quantitative real-time PCR.The protein levels of suppressor of cytokine signaling 5(SOCS5),Bcl-2,Bax and cleaved caspase-3 were determined by Western blot.Cell viability and cell proliferation were assessed using cell counting kit-8 and clone formation assay,respectively.Cell apoptosis was detected using flow cytometry.The interactions between HAND2-AS1 and miR-300,miR-300 and SOCS5 were validated using luciferase reporter assay.Results:HAND2-AS1 was down-regulated in HCC tissues and cell lines,and the expression level of HAND2-AS1 was positively correlated to patient survival.HAND2-AS1 over-expression reduced viability and proliferation in HCC cells.Elevated HAND2-AS1 level induced apoptosis in HCC cells,accompanied with increased Bax and cleaved caspase-3 levels and decreased Bcl-2 level.We also validated that HAND2-AS1 acted as a sponge of miR-300,and there was a negative correlation between expression levels of HAND2-AS1 and miR-300 in HCC tissues.Furthermore,we found that SOCS5 was a downstream target of miR-300.In addition,miR-300 mimics abolished HAND2-AS1-mediated inhibition of cell viability and proliferation.miR-300 mimics also reversed the HAND2-AS1-induced apoptosis in HCC cells.Conclusion:lncRNA HAND2-AS1 inhibits proliferation in HCC through regulating miR-300/SOCS5 axis.展开更多
目的探讨细胞因子信号传导抑制蛋白2(SOCS2)和SOCS5在儿童过敏性紫癜(HSP)中的表达及其意义。方法应用逆转录聚合酶链反应检测HSP患儿(36例)和正常健康对照儿童(17例)外周血单个核细胞中SOCS2和SOCS5 m RNA表达水平。结果 HSP患儿SOCS2...目的探讨细胞因子信号传导抑制蛋白2(SOCS2)和SOCS5在儿童过敏性紫癜(HSP)中的表达及其意义。方法应用逆转录聚合酶链反应检测HSP患儿(36例)和正常健康对照儿童(17例)外周血单个核细胞中SOCS2和SOCS5 m RNA表达水平。结果 HSP患儿SOCS2和SOCS5 m RNA表达水平高于对照儿童(P<0.05)。混合型HSP患儿SOCS2和SOCS5 m RNA表达水平较单纯型患儿升高(P<0.05)。HSP患儿SOCS2和SOCS5 m RNA表达水平无性别差异(P>0.05)。结论 SOCS2、SOCS5可能参与儿童HSP的发病。展开更多
信号转导与转录激活因子5(signal transducer and activator of transcription5,STAT5)是受细胞外的细胞因子、生长因子和激素调控的重要转录激活因子,在动物各组织器官中都有所表达,作用广泛。STAT5与β-酪蛋白的启动子有2个特异性结...信号转导与转录激活因子5(signal transducer and activator of transcription5,STAT5)是受细胞外的细胞因子、生长因子和激素调控的重要转录激活因子,在动物各组织器官中都有所表达,作用广泛。STAT5与β-酪蛋白的启动子有2个特异性结合位点,参与了催乳素作用下的乳腺发育以及乳汁的形成。文章综述了STAT5基因的结构和作用机制,该基因在乳腺中的表达和功能以及其多态性对泌乳性状的影响。展开更多
目的在人胰腺癌细胞中观察细胞因子信号转导抑制因子1(SOCS1)沉默对细胞增殖及干扰素-γ(IFN-γ)敏感性的影响,探讨SOCS1作为胰腺癌治疗靶点的可能。方法 Western blot及PCR验证SOCS1干扰序列沉默人胰腺癌细胞系PANC1中SOCS1的表达;给予...目的在人胰腺癌细胞中观察细胞因子信号转导抑制因子1(SOCS1)沉默对细胞增殖及干扰素-γ(IFN-γ)敏感性的影响,探讨SOCS1作为胰腺癌治疗靶点的可能。方法 Western blot及PCR验证SOCS1干扰序列沉默人胰腺癌细胞系PANC1中SOCS1的表达;给予IFN-γ刺激后,采用Western blotting方法观察转录激活因子(STAT)1及磷酸化STAT(pSTAT)1的变化;采用定量PCR的方法观察IFN-γ调节因子1(IRF-1)表达水平变化;MTT法检测胰腺癌细胞对IFN-γ敏感性的变化;细胞计数的方法观察细胞的增殖速度;采用流式细胞术的方法检测细胞周期的变化。结果将SOCS1干扰序列转染PANC1细胞后,SOCS1 mRNA及蛋白表达水平均明显下降。沉默SOCS1表达后,pshSOCS1-PANC1组细胞的IRF-1 mRNA水平及pSTAT1蛋白表达水平均显著升高(P<0.05),IFN-γ对PANC1细胞的半数抑制浓度(IC50)显著降低(P<0.01);转染72 h后PANC1细胞数量较对照组显著减少(P<0.05);SOCS1表达抑制后PANC1细胞G0/G1期细胞比例明显升高,而S期和G2/M期细胞比例明显减小,与对照组比较差异均有统计学意义。结论 SOCS1表达抑制后,人胰腺癌细胞株PANC1的增殖能力下降,并且对IFN-γ的敏感性增强。展开更多
目的研究SOCS1基因的2个标签单核苷酸多态性位点(tag single nucleotide polymorphisms,Tag SNP)rs243327、rs33932899与凉山彝族人群肺结核发生风险的遗传关联性。方法2015年3月至2016年6月在凉山彝族自治州共采集188例彝族肺结核患者...目的研究SOCS1基因的2个标签单核苷酸多态性位点(tag single nucleotide polymorphisms,Tag SNP)rs243327、rs33932899与凉山彝族人群肺结核发生风险的遗传关联性。方法2015年3月至2016年6月在凉山彝族自治州共采集188例彝族肺结核患者(肺结核组)和229例彝族健康人(健康对照组)全血样本。运用直接测序法对rs243327、rs33932899进行基因分型,应用哈-温平衡检验所选样本的群体代表性,采用卡方检验比较肺结核组和健康对照组之间基因型和等位基因频率分布的差异,评价SOCS1基因SNP与肺结核发生风险的关联性。结果 rs243327、rs33932899在肺结核组和健康对照组中的基因型分布均符合哈-温平衡。在rs243327位点处肺结核组CC基因型频率显著高于健康对照组(CC vs CT:OR=1.611,95%CI=1.058-2.453,P=0.026;CC vs CT+TT:OR=1.651,95%CI=1.107-2.461,P=0.014),提示rs243327位点CC基因型可能增加凉山彝族人群肺结核的发生风险,可能是凉山彝族人群肺结核的易感基因型;C等位基因频率亦显著高于健康对照组(C vs T:OR=1.516,95%CI=1.089-2.109,P=0.013),提示C等位基因可能是凉山彝族人群肺结核的易感等位基因。在rs33932899位点处基因型和等位基因分布在肺结核组和健康对照组之间均无统计学差异(GG vs CG:OR=1.148,95%CI=0.762-1.731,P=0.436;GG vs CC:OR=2.184,95%CI=0.874-5.454,P=0.088;GG/CG+CC:OR=1.229,95%CI=0.875-1.928,P=0.193;G vs C:OR=1.290,95%CI=0.932-1.785,P=0.124),提示rs33932899位点可能与凉山彝族人群肺结核的发生风险无相关性。结论 SOCS1基因单核苷酸多态性可能与凉山彝族人群肺结核的发生发展存在遗传关联。展开更多
文摘Background:Hepatocellular carcinoma(HCC)is one of the most prevalent human cancers with high mortality.Long non-coding RNA heart and neural crest derivatives expressed 2 anti-sense 1(HAND2-AS1)is down-regulated in several cancers including HCC,yet the precise mechanisms how HAND2-AS1 regulates cell survival in HCC remains poorly understood.Methods:The expression levels of HAND2-AS1 and miR-300 were measured using quantitative real-time PCR.The protein levels of suppressor of cytokine signaling 5(SOCS5),Bcl-2,Bax and cleaved caspase-3 were determined by Western blot.Cell viability and cell proliferation were assessed using cell counting kit-8 and clone formation assay,respectively.Cell apoptosis was detected using flow cytometry.The interactions between HAND2-AS1 and miR-300,miR-300 and SOCS5 were validated using luciferase reporter assay.Results:HAND2-AS1 was down-regulated in HCC tissues and cell lines,and the expression level of HAND2-AS1 was positively correlated to patient survival.HAND2-AS1 over-expression reduced viability and proliferation in HCC cells.Elevated HAND2-AS1 level induced apoptosis in HCC cells,accompanied with increased Bax and cleaved caspase-3 levels and decreased Bcl-2 level.We also validated that HAND2-AS1 acted as a sponge of miR-300,and there was a negative correlation between expression levels of HAND2-AS1 and miR-300 in HCC tissues.Furthermore,we found that SOCS5 was a downstream target of miR-300.In addition,miR-300 mimics abolished HAND2-AS1-mediated inhibition of cell viability and proliferation.miR-300 mimics also reversed the HAND2-AS1-induced apoptosis in HCC cells.Conclusion:lncRNA HAND2-AS1 inhibits proliferation in HCC through regulating miR-300/SOCS5 axis.
文摘目的探讨细胞因子信号传导抑制蛋白2(SOCS2)和SOCS5在儿童过敏性紫癜(HSP)中的表达及其意义。方法应用逆转录聚合酶链反应检测HSP患儿(36例)和正常健康对照儿童(17例)外周血单个核细胞中SOCS2和SOCS5 m RNA表达水平。结果 HSP患儿SOCS2和SOCS5 m RNA表达水平高于对照儿童(P<0.05)。混合型HSP患儿SOCS2和SOCS5 m RNA表达水平较单纯型患儿升高(P<0.05)。HSP患儿SOCS2和SOCS5 m RNA表达水平无性别差异(P>0.05)。结论 SOCS2、SOCS5可能参与儿童HSP的发病。
文摘信号转导与转录激活因子5(signal transducer and activator of transcription5,STAT5)是受细胞外的细胞因子、生长因子和激素调控的重要转录激活因子,在动物各组织器官中都有所表达,作用广泛。STAT5与β-酪蛋白的启动子有2个特异性结合位点,参与了催乳素作用下的乳腺发育以及乳汁的形成。文章综述了STAT5基因的结构和作用机制,该基因在乳腺中的表达和功能以及其多态性对泌乳性状的影响。
文摘目的研究SOCS1基因的2个标签单核苷酸多态性位点(tag single nucleotide polymorphisms,Tag SNP)rs243327、rs33932899与凉山彝族人群肺结核发生风险的遗传关联性。方法2015年3月至2016年6月在凉山彝族自治州共采集188例彝族肺结核患者(肺结核组)和229例彝族健康人(健康对照组)全血样本。运用直接测序法对rs243327、rs33932899进行基因分型,应用哈-温平衡检验所选样本的群体代表性,采用卡方检验比较肺结核组和健康对照组之间基因型和等位基因频率分布的差异,评价SOCS1基因SNP与肺结核发生风险的关联性。结果 rs243327、rs33932899在肺结核组和健康对照组中的基因型分布均符合哈-温平衡。在rs243327位点处肺结核组CC基因型频率显著高于健康对照组(CC vs CT:OR=1.611,95%CI=1.058-2.453,P=0.026;CC vs CT+TT:OR=1.651,95%CI=1.107-2.461,P=0.014),提示rs243327位点CC基因型可能增加凉山彝族人群肺结核的发生风险,可能是凉山彝族人群肺结核的易感基因型;C等位基因频率亦显著高于健康对照组(C vs T:OR=1.516,95%CI=1.089-2.109,P=0.013),提示C等位基因可能是凉山彝族人群肺结核的易感等位基因。在rs33932899位点处基因型和等位基因分布在肺结核组和健康对照组之间均无统计学差异(GG vs CG:OR=1.148,95%CI=0.762-1.731,P=0.436;GG vs CC:OR=2.184,95%CI=0.874-5.454,P=0.088;GG/CG+CC:OR=1.229,95%CI=0.875-1.928,P=0.193;G vs C:OR=1.290,95%CI=0.932-1.785,P=0.124),提示rs33932899位点可能与凉山彝族人群肺结核的发生风险无相关性。结论 SOCS1基因单核苷酸多态性可能与凉山彝族人群肺结核的发生发展存在遗传关联。
