BACKGROUND Hepatocellular carcinoma(HCC)is one of the leading causes of cancer-related deaths worldwide,but there is a shortage of effective biomarkers for its diagnosis.AIM To explore blood exosomal micro ribonucleic...BACKGROUND Hepatocellular carcinoma(HCC)is one of the leading causes of cancer-related deaths worldwide,but there is a shortage of effective biomarkers for its diagnosis.AIM To explore blood exosomal micro ribonucleic acids(miRNAs)as potential biomarkers for HCC diagnosis.RESULTS The principal component analysis suggested that daily alcohol consumption could alter the blood exosomal miRNA profiles of hepatitis B virus positive non-HCC patients through miR-3168 and miR-223-3p.The miRNA profiles also revealed the tumor stages of HCC patients.High expression of miR-455-5p and miR-30c-5p,which significantly correlated with better overall survival in tumor tissues,could also be detected in blood exosomes.Two pairs of miRNAs(miR-584-5p/miR-106-3p and miR-628-3p/miR-941)showed a 94.1%sensitivity and 68.4%specificity to differentiate HCC patients from non-HCC patients.The specificity of the combination was substantially influenced by alcohol consumption habits.CONCLUSION This study suggested that blood exosomal miRNAs can be used as new noninvasive diagnostic tools for HCC.However,their accuracy could be affected by tumor stage and alcohol consumption habits.展开更多
Despite advances in antiretroviral treatment(ART),human immunodeficiency virus(HIV)continues to be a major global public health issue owing to the increased mortality rates related to the prevalent oncogenic viruses a...Despite advances in antiretroviral treatment(ART),human immunodeficiency virus(HIV)continues to be a major global public health issue owing to the increased mortality rates related to the prevalent oncogenic viruses among people living with HIV(PLWH).Human papillomavirus(HPV)is the most common sexually transmitted viral disease in both men and women worldwide.High-risk or oncogenic HPV types are associated with the development of HPV-related malignancies,including cervical,penile,and anal cancer,in addition to oral cancers.The incidence of anal squamous cell cancers is increasing among PLWH,necessitating the need for reliable screening methods in this population at risk.In fact,the currently used screening methods,including the Pap smear,are invasive and are neither sensitive nor specific.Investigators are interested in circulatory and tissue micro ribonucleic acids(miRNAs),as these small non-coding RNAs are ideal biomarkers for early detection and prognosis of cancer.Multiple miRNAs are deregulated during HIV and HPV infection and their deregulation contributes to the pathogenesis of disease.Here,we will review the molecular basis of HIV and HPV co-infections and focus on the pathogenesis and epidemiology of anal cancer in PLWH.The limitations of screening for anal cancer and the need for a reliable screening program that involves specific miRNAs with diagnostic and therapeutic values is also discussed.展开更多
目的研究miRNA-21-5p对光诱导的人视网膜色素上皮细胞氧化应激损伤的影响。方法将体外培养的人视网膜色素上皮细胞系ARPE-19细胞随机分为对照组(TransIntro EL Transfection Reagent转染液培养)、损伤组(TransIntro EL Transfection Rea...目的研究miRNA-21-5p对光诱导的人视网膜色素上皮细胞氧化应激损伤的影响。方法将体外培养的人视网膜色素上皮细胞系ARPE-19细胞随机分为对照组(TransIntro EL Transfection Reagent转染液培养)、损伤组(TransIntro EL Transfection Reagent转染液+光损伤)、过表达组(TransIntro EL Transfection Reagent转染液+miRNA-21-5p mimics+光损伤)、阴性组(TransIntro EL Transfection Reagent转染液+miRNA-21-5p mimics NC+光损伤)、PI3K/Akt阻断剂组(TransIntro EL Transfection Reagent转染液+miRNA-21-5p mimics+LY294002+光损伤)。使用光照强度为(16500±200)lx的LED冷光灯建立ARPE-19细胞光损伤模型,利用TransIntro EL Transfection Reagent转染液行细胞转染。采用qRT-PCR法检测各组ARPE-19细胞miRNA-21-5p表达水平,采用CCK-8法检测各组ARPE-19细胞活力,流式细胞仪检测各组ARPE-19细胞活性氧(ROS)含量变化,ELISA法检测各组ARPE-19细胞超氧化物歧化酶(SOD)活性和丙二醛(MDA)含量。结果与对照组相比,损伤组ARPE-19细胞miRNA-21-5p表达明显下降,细胞存活率明显下降,ROS含量显著升高,SOD活性明显降低,MDA含量明显增加(均为P<0.001);与损伤组相比,过表达组ARPE-19细胞miRNA-21-5p表达明显升高,细胞存活率明显上升,ROS含量明显降低,SOD活性升高,MDA含量减少(均为P<0.001),而阴性组ARPE-19细胞miRNA-21-5p表达、细胞存活率、ROS含量、SOD活性、MDA含量均无明显差异(均为P>0.05);与过表达组相比,PI3K/Akt阻断剂组ARPE-19细胞miRNA-21-5p表达明显降低,细胞存活率明显下降,ROS含量明显升高,SOD活性明显降低,MDA含量明显增加(均为P<0.01)。结论miRNA-21-5p能显著降低光诱导的ARPE-19细胞氧化应激水平,提高光诱导的ARPE-19细胞抗氧化能力。展开更多
目的 探讨微核糖核酸-525-5p(mi R-525-5p)、围脂滴蛋白3(PLIN3)的表达与胶质瘤预后的关系。方法选取2018年2月至2020年7月青岛市市立医院收治的102例胶质瘤患者,收集术中部分瘤组织和瘤旁组织采用实时荧光定量聚合酶链式反应检测mi R-5...目的 探讨微核糖核酸-525-5p(mi R-525-5p)、围脂滴蛋白3(PLIN3)的表达与胶质瘤预后的关系。方法选取2018年2月至2020年7月青岛市市立医院收治的102例胶质瘤患者,收集术中部分瘤组织和瘤旁组织采用实时荧光定量聚合酶链式反应检测mi R-525-5p、PLIN3 m RNA表达,免疫组织化学染色法检测PLIN3表达。通过Target Scan数据库预测mi R-525-5p与PLIN3的结合位点,分析二者在胶质瘤组织中表达的相关性。根据胶质瘤组织中PLIN3 m RNA表达均值分为高表达组和低表达组,采用Kaplan-Meier法绘制高/低PLIN3 m RNA表达胶质瘤患者生存曲线,多因素Cox回归分析胶质瘤患者预后影响因素。结果 与瘤旁组织比较,胶质瘤组织中mi R-525-5p表达降低,PLIN3 m RNA表达升高(P<0.05)。与瘤旁组织比较,胶质瘤组织中PLIN3阳性率升高(P<0.05)。mi R-525-5p与PLIN3存在结合位点。mi R-525-5p与PLIN3 m RNA表达在胶质瘤组织中呈负相关(P<0.05)。PLIN3 m RNA高表达组3年总生存率低于低表达组(P<0.05)。多因素Cox回归分析显示,低分化、世界卫生组织中枢神经系统肿瘤分级Ⅲ~Ⅳ级、PLIN3 m RNA≥1.86为胶质瘤患者死亡的独立危险因素(HR>1,P<0.05)。结论 胶质瘤组织中mi R-525-5p低表达和PLIN3 m RNA高表达,二者表达呈负相关,PLIN3 m RNA高表达与胶质瘤患者预后不良有关。展开更多
目的揭示参与绝经后骨质疏松症(postmenopausal osteoporosis,PMOP)生理病理过程的核心基因,并预测可能与之相互作用的微小核糖核酸(micro-ribonucleic acid,miRNA)。方法选取NCBI基因表达综合数据库基因芯片GSE57273,应用GEO2R和Morph...目的揭示参与绝经后骨质疏松症(postmenopausal osteoporosis,PMOP)生理病理过程的核心基因,并预测可能与之相互作用的微小核糖核酸(micro-ribonucleic acid,miRNA)。方法选取NCBI基因表达综合数据库基因芯片GSE57273,应用GEO2R和Morpheus分析软件获得差异基因(differentially expressed genes,DEGs),并通过DAVID(Database for Annotation,Visualization and Integrated Discovery)进行功能富集分析。应用STRING(Search Tool for the Retrieval of Interacting Genes)、Cytoscape和MCODE(Molecular Complex Detection)软件建立蛋白相互作用网络计算DEGs的各个连接度并分析网络集簇模块。由CyTargetLinker预测与核心基因互作的miRNA。结果本研究共获得841个DEGs,其功能主要富集于基因表达过程,细胞大分子生物合成过程等。蛋白相互作用网络共包含523个节点与2 026条连线。本研究列出了前3个集簇模块,同时筛选出10个核心基因:HSP90AA1、EP300、SMARCA2、RANBP2、ASH1L、EIF4E、PTEN、CNOT6L、RPL7、KRAS,并预测出37个miRNA可与其中7个核心基因靶向性相互作用。结论核心基因与其相互作用的miRNA的发现可能有助于了解PMOP的病理机制,或为药物的开发提供治疗靶点。同时,通过对核心基因富集功能的鉴定为PMOP建立新的科学假说提供依据。展开更多
文摘BACKGROUND Hepatocellular carcinoma(HCC)is one of the leading causes of cancer-related deaths worldwide,but there is a shortage of effective biomarkers for its diagnosis.AIM To explore blood exosomal micro ribonucleic acids(miRNAs)as potential biomarkers for HCC diagnosis.RESULTS The principal component analysis suggested that daily alcohol consumption could alter the blood exosomal miRNA profiles of hepatitis B virus positive non-HCC patients through miR-3168 and miR-223-3p.The miRNA profiles also revealed the tumor stages of HCC patients.High expression of miR-455-5p and miR-30c-5p,which significantly correlated with better overall survival in tumor tissues,could also be detected in blood exosomes.Two pairs of miRNAs(miR-584-5p/miR-106-3p and miR-628-3p/miR-941)showed a 94.1%sensitivity and 68.4%specificity to differentiate HCC patients from non-HCC patients.The specificity of the combination was substantially influenced by alcohol consumption habits.CONCLUSION This study suggested that blood exosomal miRNAs can be used as new noninvasive diagnostic tools for HCC.However,their accuracy could be affected by tumor stage and alcohol consumption habits.
文摘Despite advances in antiretroviral treatment(ART),human immunodeficiency virus(HIV)continues to be a major global public health issue owing to the increased mortality rates related to the prevalent oncogenic viruses among people living with HIV(PLWH).Human papillomavirus(HPV)is the most common sexually transmitted viral disease in both men and women worldwide.High-risk or oncogenic HPV types are associated with the development of HPV-related malignancies,including cervical,penile,and anal cancer,in addition to oral cancers.The incidence of anal squamous cell cancers is increasing among PLWH,necessitating the need for reliable screening methods in this population at risk.In fact,the currently used screening methods,including the Pap smear,are invasive and are neither sensitive nor specific.Investigators are interested in circulatory and tissue micro ribonucleic acids(miRNAs),as these small non-coding RNAs are ideal biomarkers for early detection and prognosis of cancer.Multiple miRNAs are deregulated during HIV and HPV infection and their deregulation contributes to the pathogenesis of disease.Here,we will review the molecular basis of HIV and HPV co-infections and focus on the pathogenesis and epidemiology of anal cancer in PLWH.The limitations of screening for anal cancer and the need for a reliable screening program that involves specific miRNAs with diagnostic and therapeutic values is also discussed.
文摘目的研究miRNA-21-5p对光诱导的人视网膜色素上皮细胞氧化应激损伤的影响。方法将体外培养的人视网膜色素上皮细胞系ARPE-19细胞随机分为对照组(TransIntro EL Transfection Reagent转染液培养)、损伤组(TransIntro EL Transfection Reagent转染液+光损伤)、过表达组(TransIntro EL Transfection Reagent转染液+miRNA-21-5p mimics+光损伤)、阴性组(TransIntro EL Transfection Reagent转染液+miRNA-21-5p mimics NC+光损伤)、PI3K/Akt阻断剂组(TransIntro EL Transfection Reagent转染液+miRNA-21-5p mimics+LY294002+光损伤)。使用光照强度为(16500±200)lx的LED冷光灯建立ARPE-19细胞光损伤模型,利用TransIntro EL Transfection Reagent转染液行细胞转染。采用qRT-PCR法检测各组ARPE-19细胞miRNA-21-5p表达水平,采用CCK-8法检测各组ARPE-19细胞活力,流式细胞仪检测各组ARPE-19细胞活性氧(ROS)含量变化,ELISA法检测各组ARPE-19细胞超氧化物歧化酶(SOD)活性和丙二醛(MDA)含量。结果与对照组相比,损伤组ARPE-19细胞miRNA-21-5p表达明显下降,细胞存活率明显下降,ROS含量显著升高,SOD活性明显降低,MDA含量明显增加(均为P<0.001);与损伤组相比,过表达组ARPE-19细胞miRNA-21-5p表达明显升高,细胞存活率明显上升,ROS含量明显降低,SOD活性升高,MDA含量减少(均为P<0.001),而阴性组ARPE-19细胞miRNA-21-5p表达、细胞存活率、ROS含量、SOD活性、MDA含量均无明显差异(均为P>0.05);与过表达组相比,PI3K/Akt阻断剂组ARPE-19细胞miRNA-21-5p表达明显降低,细胞存活率明显下降,ROS含量明显升高,SOD活性明显降低,MDA含量明显增加(均为P<0.01)。结论miRNA-21-5p能显著降低光诱导的ARPE-19细胞氧化应激水平,提高光诱导的ARPE-19细胞抗氧化能力。
文摘目的 探讨微核糖核酸-525-5p(mi R-525-5p)、围脂滴蛋白3(PLIN3)的表达与胶质瘤预后的关系。方法选取2018年2月至2020年7月青岛市市立医院收治的102例胶质瘤患者,收集术中部分瘤组织和瘤旁组织采用实时荧光定量聚合酶链式反应检测mi R-525-5p、PLIN3 m RNA表达,免疫组织化学染色法检测PLIN3表达。通过Target Scan数据库预测mi R-525-5p与PLIN3的结合位点,分析二者在胶质瘤组织中表达的相关性。根据胶质瘤组织中PLIN3 m RNA表达均值分为高表达组和低表达组,采用Kaplan-Meier法绘制高/低PLIN3 m RNA表达胶质瘤患者生存曲线,多因素Cox回归分析胶质瘤患者预后影响因素。结果 与瘤旁组织比较,胶质瘤组织中mi R-525-5p表达降低,PLIN3 m RNA表达升高(P<0.05)。与瘤旁组织比较,胶质瘤组织中PLIN3阳性率升高(P<0.05)。mi R-525-5p与PLIN3存在结合位点。mi R-525-5p与PLIN3 m RNA表达在胶质瘤组织中呈负相关(P<0.05)。PLIN3 m RNA高表达组3年总生存率低于低表达组(P<0.05)。多因素Cox回归分析显示,低分化、世界卫生组织中枢神经系统肿瘤分级Ⅲ~Ⅳ级、PLIN3 m RNA≥1.86为胶质瘤患者死亡的独立危险因素(HR>1,P<0.05)。结论 胶质瘤组织中mi R-525-5p低表达和PLIN3 m RNA高表达,二者表达呈负相关,PLIN3 m RNA高表达与胶质瘤患者预后不良有关。
文摘目的揭示参与绝经后骨质疏松症(postmenopausal osteoporosis,PMOP)生理病理过程的核心基因,并预测可能与之相互作用的微小核糖核酸(micro-ribonucleic acid,miRNA)。方法选取NCBI基因表达综合数据库基因芯片GSE57273,应用GEO2R和Morpheus分析软件获得差异基因(differentially expressed genes,DEGs),并通过DAVID(Database for Annotation,Visualization and Integrated Discovery)进行功能富集分析。应用STRING(Search Tool for the Retrieval of Interacting Genes)、Cytoscape和MCODE(Molecular Complex Detection)软件建立蛋白相互作用网络计算DEGs的各个连接度并分析网络集簇模块。由CyTargetLinker预测与核心基因互作的miRNA。结果本研究共获得841个DEGs,其功能主要富集于基因表达过程,细胞大分子生物合成过程等。蛋白相互作用网络共包含523个节点与2 026条连线。本研究列出了前3个集簇模块,同时筛选出10个核心基因:HSP90AA1、EP300、SMARCA2、RANBP2、ASH1L、EIF4E、PTEN、CNOT6L、RPL7、KRAS,并预测出37个miRNA可与其中7个核心基因靶向性相互作用。结论核心基因与其相互作用的miRNA的发现可能有助于了解PMOP的病理机制,或为药物的开发提供治疗靶点。同时,通过对核心基因富集功能的鉴定为PMOP建立新的科学假说提供依据。
