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
目的研究miR-21在弥漫大B细胞淋巴瘤(diffuse large B-cell lymphoma,DLBCL)中的表达,探讨miR-21表达与DL-BCL临床病理特征的关系及其在DLBCL发生发展中的意义。方法采用Real-time RT-PCR方法检测36例DLBCL和10例正常淋巴结中miR-21的表...目的研究miR-21在弥漫大B细胞淋巴瘤(diffuse large B-cell lymphoma,DLBCL)中的表达,探讨miR-21表达与DL-BCL临床病理特征的关系及其在DLBCL发生发展中的意义。方法采用Real-time RT-PCR方法检测36例DLBCL和10例正常淋巴结中miR-21的表达,并采用免疫组织化学SP法检测Ki-67、PTEN在DLBCL中的表达。结果miR-21在DLBCL中高表达,36例DLBCL中有14例表达PTEN(38.9%),21例Ki-67≥50%(58.3%)。DLBCL中miR-21表达水平与PTEN蛋白表达呈负相关,其高表达与DLBCL高Ann Arbor分期、高增殖指数(Ki-67≥50%)、国际预后指数(IPI)呈正相关。结论miR-21过表达可能是DLBCL恶性度高的标志,是促进DLBCL肿瘤细胞增殖的重要因素。PTEN可能是miR-21在DLBCL发挥作用的靶标。展开更多
目的探讨血清miR-302b在老年急性心肌梗死(AMI)患者中的表达及其临床意义。方法选取本院收治的138例老年AMI患者和65例老年体检者,比较两组血清miR-302b、心肌肌钙蛋白I(cTnI)及肌酸激酶同工酶(CK-MB)水平变化。应用受试者工作特征(ROC...目的探讨血清miR-302b在老年急性心肌梗死(AMI)患者中的表达及其临床意义。方法选取本院收治的138例老年AMI患者和65例老年体检者,比较两组血清miR-302b、心肌肌钙蛋白I(cTnI)及肌酸激酶同工酶(CK-MB)水平变化。应用受试者工作特征(ROC)曲线分析血清miR-302b、cTnI及CK-MB水平对老年AMI的诊断价值。采用Pearson相关性分析,分析老年AMI患者miR-302b水平与cTnI、CK-MB的相关性。结果 AMI组血清miR-302b(4.25±1.30 vs. 0.51±0.16)、cTnI(ng/mL:3.17±1.36 vs. 0.04±0.01)及CK-MB(U/L:73.50±19.36 vs. 11.70±2.25)水平均明显高于对照组(P<0.01)。ROC曲线分析显示,miR-302b、cTnI及CK-MB诊断AMI的临界值分别为2.73、1.52 ng/mL、61.30 U/L,三项联合诊断老年AMI的AUC最大为0.935,95%CI(0.872~0.985),其敏感度和特异度分别为94.8%和89.2%。相关分析显示,老年AMI患者血清miR-302b水平与cTnI、CK-MB均呈正相关(r=0.826、r=0.745,P<0.01)。结论血清miR-302b在老年AMI患者中呈高表达,与cTnI、CK-MB联合检测有助于提高老年AMI诊断的准确性。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.
文摘目的探讨血清miR-302b在老年急性心肌梗死(AMI)患者中的表达及其临床意义。方法选取本院收治的138例老年AMI患者和65例老年体检者,比较两组血清miR-302b、心肌肌钙蛋白I(cTnI)及肌酸激酶同工酶(CK-MB)水平变化。应用受试者工作特征(ROC)曲线分析血清miR-302b、cTnI及CK-MB水平对老年AMI的诊断价值。采用Pearson相关性分析,分析老年AMI患者miR-302b水平与cTnI、CK-MB的相关性。结果 AMI组血清miR-302b(4.25±1.30 vs. 0.51±0.16)、cTnI(ng/mL:3.17±1.36 vs. 0.04±0.01)及CK-MB(U/L:73.50±19.36 vs. 11.70±2.25)水平均明显高于对照组(P<0.01)。ROC曲线分析显示,miR-302b、cTnI及CK-MB诊断AMI的临界值分别为2.73、1.52 ng/mL、61.30 U/L,三项联合诊断老年AMI的AUC最大为0.935,95%CI(0.872~0.985),其敏感度和特异度分别为94.8%和89.2%。相关分析显示,老年AMI患者血清miR-302b水平与cTnI、CK-MB均呈正相关(r=0.826、r=0.745,P<0.01)。结论血清miR-302b在老年AMI患者中呈高表达,与cTnI、CK-MB联合检测有助于提高老年AMI诊断的准确性。
