Objective This study aimed to examine the role of long non-coding RNA PCED1B antisense RNA 1(PCED1B-AS1)in the development of hepatocellular carcinoma(HCC).Methods A total of 62 pairs of HCC tissues and adjacent non-t...Objective This study aimed to examine the role of long non-coding RNA PCED1B antisense RNA 1(PCED1B-AS1)in the development of hepatocellular carcinoma(HCC).Methods A total of 62 pairs of HCC tissues and adjacent non-tumor tissues were obtained from 62 HCC patients.The interactions of PCED1B-AS1 and microRNA-34a(miR-34a)were detected by dual luciferase activity assay and RNA pull-down assay.The RNA expression levels of PCED1B-AS1,miR-34a and CD44 were detected by RT-qPCR,and the protein expression level of CD44 was determined by Western blotting.The cell proliferation was detected by cell proliferation assay,and the cell invasion and migration by transwell invasion assay.The HCC tumor growth after PCED1B-AS1 was downregulated was determined by in vivo animal study.Results PCED1B-AS1 was highly expressed in HCC tissues,which was associated with poor survival of HCC patients.Furthermore,PCED1B-AS1 interacted with miR-34a in HCC cells,but they did not regulate the expression of each other.Additionally,PCED1B-AS1 increased the expression level of CD44,which was targeted by miR-34a.The cell proliferation and invasion assay revealed that miR-34a inhibited the proliferation and invasion of HCC in vitro,while CD44 exhibited the opposite effects.Furthermore,PCED1B-AS1 suppressed the role of miR-34a.Moreover,the knockdown of PCED1B-AS1 repressed the HCC tumor growth in nude mice in vivo.Conclusion PCED1B-AS1 may play an oncogenic role by regulating the miR-34a/CD44 axis in HCC.展开更多
目的 探讨原发性肝癌(primary carcinoma of the liver)患者血清微小核糖核酸(microRNA,miR)-196b,微小核糖核酸(microRNA,miR)-520f表达水平及其临床诊断价值。方法 选择2020年6月~2022年6月攀枝花学院附属医院收治的73例原发性肝癌患...目的 探讨原发性肝癌(primary carcinoma of the liver)患者血清微小核糖核酸(microRNA,miR)-196b,微小核糖核酸(microRNA,miR)-520f表达水平及其临床诊断价值。方法 选择2020年6月~2022年6月攀枝花学院附属医院收治的73例原发性肝癌患者作为研究组,患者均符合《原发性肝癌诊疗规范》中的诊断标准;选择同期医院体检的80例健康人群作为对照组。抽取研究对象清晨空腹外周静脉血5ml,采用实时荧光定量逆转录-聚合酶链反应(real time fluorescent quantitative reverse transcription-polymerase chain reaction,qRT-PCR)检测两组血清miR-196b和miR-520f表达水平。分析不同临床病理特征原发性肝癌患者血清miR-196b和miR-520f表达水平差异,采用Pearson相关性分析探讨血清miR-196b与miR-520f的关系,采用受试者工作特征(receiver operating characteristic,ROC)曲线分析血清miR-196b和miR-520f对原发性肝癌的诊断价值。结果 研究组血清miR-196b表达水平(2.73±0.56)明显高于对照组(0.99±0.24),miR-520f表达水平(1.69±0.44)明显低于对照组(3.34±0.64),差异具有统学意义(t=30.578,12.690,均P<0.05)。与Ⅰ~Ⅱ期、中高分化、无淋巴结转移、肿瘤直径<5cm患者相比,Ⅲ~Ⅳ期、低分化、淋巴结转移和肿瘤直径≥5cm患者血清miR-196b表达水平均升高,miR-520f表达水平均降低,差异具有统计学意义(tmiR-196b=6.919~13.229,tmiR-520f=3.873~7.814,均P<0.05)。Pearson相关性分析显示,原发性肝癌患者血清miR-196b表达水平与miR-520f表达水平呈负相关(r=-0.445,P=0.006)。ROC曲线分析显示,血清miR-196b预测原发性肝癌的曲线下面积、截断值、敏感度、特异度及95%置信区间(95%confidence interval,95%CI)分别为0.842,2.55,91.78%,62.50%和95%CI(0.810~0.874);miR-520f预测原发性肝癌的的曲线下面积、截断值、敏感度、特异度及95%置信区间分别为0.872,2.43,91.78%,67.50%和95%CI(0.848~0.906);血清miR-196b联合miR-520f预测原发性肝癌的曲线下面积、敏感度、特异度及95%置信区间分别为0.923,86.30%,87.50%和95%CI(0.891~0.955)。结论 原发性肝癌患者血清miR-196b表达水平上调,miR-520f表达水平下调,其表达水平变化与肿瘤直径、临床分期、分化程度和淋巴结转移密切相关,联合检测血清miR-196b与miR-520f能有效提高原发性肝癌的诊断效能。展开更多
AIM:To determine the in vitro protective effect of recombinant prominin-1(Prominin-1)+microRNA-29b(P1M29)on N-methyl-D-aspartate(NMDA)-induced excitotoxicity in retinal ganglion cells(RGCs).METHODS:RGC-5 cells were cu...AIM:To determine the in vitro protective effect of recombinant prominin-1(Prominin-1)+microRNA-29b(P1M29)on N-methyl-D-aspartate(NMDA)-induced excitotoxicity in retinal ganglion cells(RGCs).METHODS:RGC-5 cells were cultured,and NMDAinduced excitotoxicity at the range of 100–800μmol/L was assessed using the MTT assay.NMDA(800μmol/L)was selected as the appropriate concentration for preparing the cell model.To evaluate the protective effect of P1M29 on the cell model,Prominin-1 was added at the concentration of 1–6 ng/mL for 48h,and the cell survival was investigated with/without microRNA-29b.After obtaining the appropriate concentration and time of P1M29 at 48h,real-time polymerase chain reaction(PCR)was utilized to detect the relative mRNA expression of vascular endothelial growth factor(VEGF)and transforming growth factor(TGF)-β2.Western blot detection was applied to measure the phosphorylation levels of protein kinase B(AKT)and extracellular regulated protein kinases(ERK)in RGC-5 cells after treatment with Prominin-1.Apoptosis study of the cell model was conducted by flow cytometry for estimating the anti-apoptotic effect of P1M29.Immunofluorescence analysis was used to analyze the expression levels of VEGF and TGF-β2.RESULTS:MTT cytotoxicity assays demonstrated that P1M29 group had significantly higher cell survival rate than Prominin-1 group(P<0.05).Real-time PCR data indicated that the expression levels of VEGF were significantly increased in both Prominin-1 and P1M29 groups compared NMDA and microRNA-29b group(P<0.05),while TGF-β2 were significantly decreased in both microRNA-29b and P1M29 groups compared NMDA and Prominin-1 group(P<0.05).Western blot results showed that both Prominin-1 and P1M29 groups significantly increased the phosphorylation levels of AKT and ERK compared to NMDA and microRNA-29b groups(P<0.05).Flow cytometry analysis revealed that P1M29 could prevent RGC-5 cell apoptosis in the early stage of apoptosis,while immunofluorescence results showed that P1M29 group had higher expression of VEGF and lower expression of TGF-β2 with a stronger green fluorescence than NMDA group.CONCLUSION:Prominin-1 combined with microRNA-29b can provide a suitable therapeutic option for ameliorating NMDA-induced excitotoxicity in RGC-5 cells.展开更多
基金supported by the Medical Science and Technology Research Foundation of Guangdong Province(No.A2020559).
文摘Objective This study aimed to examine the role of long non-coding RNA PCED1B antisense RNA 1(PCED1B-AS1)in the development of hepatocellular carcinoma(HCC).Methods A total of 62 pairs of HCC tissues and adjacent non-tumor tissues were obtained from 62 HCC patients.The interactions of PCED1B-AS1 and microRNA-34a(miR-34a)were detected by dual luciferase activity assay and RNA pull-down assay.The RNA expression levels of PCED1B-AS1,miR-34a and CD44 were detected by RT-qPCR,and the protein expression level of CD44 was determined by Western blotting.The cell proliferation was detected by cell proliferation assay,and the cell invasion and migration by transwell invasion assay.The HCC tumor growth after PCED1B-AS1 was downregulated was determined by in vivo animal study.Results PCED1B-AS1 was highly expressed in HCC tissues,which was associated with poor survival of HCC patients.Furthermore,PCED1B-AS1 interacted with miR-34a in HCC cells,but they did not regulate the expression of each other.Additionally,PCED1B-AS1 increased the expression level of CD44,which was targeted by miR-34a.The cell proliferation and invasion assay revealed that miR-34a inhibited the proliferation and invasion of HCC in vitro,while CD44 exhibited the opposite effects.Furthermore,PCED1B-AS1 suppressed the role of miR-34a.Moreover,the knockdown of PCED1B-AS1 repressed the HCC tumor growth in nude mice in vivo.Conclusion PCED1B-AS1 may play an oncogenic role by regulating the miR-34a/CD44 axis in HCC.
基金Supported by Zhejiang Provincial Natural Science Foundation of China(No.LY20H120003).
文摘AIM:To determine the in vitro protective effect of recombinant prominin-1(Prominin-1)+microRNA-29b(P1M29)on N-methyl-D-aspartate(NMDA)-induced excitotoxicity in retinal ganglion cells(RGCs).METHODS:RGC-5 cells were cultured,and NMDAinduced excitotoxicity at the range of 100–800μmol/L was assessed using the MTT assay.NMDA(800μmol/L)was selected as the appropriate concentration for preparing the cell model.To evaluate the protective effect of P1M29 on the cell model,Prominin-1 was added at the concentration of 1–6 ng/mL for 48h,and the cell survival was investigated with/without microRNA-29b.After obtaining the appropriate concentration and time of P1M29 at 48h,real-time polymerase chain reaction(PCR)was utilized to detect the relative mRNA expression of vascular endothelial growth factor(VEGF)and transforming growth factor(TGF)-β2.Western blot detection was applied to measure the phosphorylation levels of protein kinase B(AKT)and extracellular regulated protein kinases(ERK)in RGC-5 cells after treatment with Prominin-1.Apoptosis study of the cell model was conducted by flow cytometry for estimating the anti-apoptotic effect of P1M29.Immunofluorescence analysis was used to analyze the expression levels of VEGF and TGF-β2.RESULTS:MTT cytotoxicity assays demonstrated that P1M29 group had significantly higher cell survival rate than Prominin-1 group(P<0.05).Real-time PCR data indicated that the expression levels of VEGF were significantly increased in both Prominin-1 and P1M29 groups compared NMDA and microRNA-29b group(P<0.05),while TGF-β2 were significantly decreased in both microRNA-29b and P1M29 groups compared NMDA and Prominin-1 group(P<0.05).Western blot results showed that both Prominin-1 and P1M29 groups significantly increased the phosphorylation levels of AKT and ERK compared to NMDA and microRNA-29b groups(P<0.05).Flow cytometry analysis revealed that P1M29 could prevent RGC-5 cell apoptosis in the early stage of apoptosis,while immunofluorescence results showed that P1M29 group had higher expression of VEGF and lower expression of TGF-β2 with a stronger green fluorescence than NMDA group.CONCLUSION:Prominin-1 combined with microRNA-29b can provide a suitable therapeutic option for ameliorating NMDA-induced excitotoxicity in RGC-5 cells.
