Circular RNAs(circRNAs)have been recognized as pivotal regulators in tumorigenesis,yet the biological functions as well as molecular mechanisms of the majority of circRNAs in hepatocellular carcinoma(HCC)remain elusiv...Circular RNAs(circRNAs)have been recognized as pivotal regulators in tumorigenesis,yet the biological functions as well as molecular mechanisms of the majority of circRNAs in hepatocellular carcinoma(HCC)remain elusive.We sought to unveil the expression profile and biological role of circMYBL2 in HCC.Initial microarray analyses were conducted to probe the expression profile of circMYBL2 in HCC cells,and qRT‒PCR analysis was then performed in HCC cell lines and tissues,revealing significant upregulation of circMYBL2.Subsequent experiments were conducted to evaluate the biological function of circMYBL2 in HCC progression.Furthermore,bioinformatics analysis,qRT‒PCR analysis,luciferase reporter assays,and western blot analysis were employed to investigate the interplay among circMYBL2,miR-1205,and E2F1.CircMYBL2 was found to exhibit marked upregulation in tumor tissues as well as HCC cell lines.Elevated expression of circMYBL2 increased the proliferation and migration of HCC cells,whereas circMYBL2 knockdown elicited contrasting effects.Mechanistically,our results indicated that circMYBL2 promoted E2F1 expression and facilitated HCC progression by sponging miR-1205.Our findings revealed that circMYBL2 contributed to HCC progression through the circMYBL2/miR-1205/E2F1 axis,suggesting the potential of circMYBL2 as a novel target for HCC treatment or a prognostic biomarker for HCC.展开更多
目的探讨E2F转录因子2(E2F2)和多配体蛋白聚糖-4(SDC4)对急性胰腺炎患者病情评估及预后诊断的价值。方法将2018年4月至2020年4月西安市中心医院收治的45例轻症急性胰腺炎患者作为轻症组,56例重症急性胰腺炎患者为重症组;将同期20名来我...目的探讨E2F转录因子2(E2F2)和多配体蛋白聚糖-4(SDC4)对急性胰腺炎患者病情评估及预后诊断的价值。方法将2018年4月至2020年4月西安市中心医院收治的45例轻症急性胰腺炎患者作为轻症组,56例重症急性胰腺炎患者为重症组;将同期20名来我院进行健康体检者作为对照组。比较各组研究对象的一般资料及临床特征;比较三组研究对象的E2F2、SDC4 m RNA和蛋白表达水平;分析E2F2、SDC4表达水平与急性胰腺炎患者JPN评分的相关性;分析血清SDC4、E2F2水平和JPN评分对急性胰腺炎的诊断价值。结果轻症组和重症组的腹痛、恶心呕吐发生率无明显差异(P>0.05);重症组的腹胀、全身性并发症发生率高于轻症组(P<0.05);轻症组和重症组的血清淀粉酶、脂肪酶、降钙素原、乳酸脱氢酶(LDH)以及C反应蛋白(CRP)水平高于对照组(P<0.01);重症组的血清淀粉酶、脂肪酶、降钙素原、LDH、CRP水平及JPN评分高于轻症组(P<0.01)。轻症组和重症组的E2F2、SDC4 m RNA和蛋白表达水平显著高于对照组,且重症组高于轻症组(P<0.05)。E2F2和SDC4表达水平与急性胰腺炎患者JPN评分呈正相关(P<0.001);E2F2表达水平与SDC4表达水平呈正相关(P<0.001)。血清E2F2和SDC4水平对急性胰腺炎的诊断价值较高,与JPN评分相似。结论E2F2和SDC4可作为评估急性胰腺炎患者发病及预后的潜在指标。展开更多
基金supported by the Guangdong Basic and Applied Basic Research Foundation(No.2021A1515010403,Ning Lyu)Natural Science Foundation of Guangdong Province,China(No.1914050001553,Dong Chen).
文摘Circular RNAs(circRNAs)have been recognized as pivotal regulators in tumorigenesis,yet the biological functions as well as molecular mechanisms of the majority of circRNAs in hepatocellular carcinoma(HCC)remain elusive.We sought to unveil the expression profile and biological role of circMYBL2 in HCC.Initial microarray analyses were conducted to probe the expression profile of circMYBL2 in HCC cells,and qRT‒PCR analysis was then performed in HCC cell lines and tissues,revealing significant upregulation of circMYBL2.Subsequent experiments were conducted to evaluate the biological function of circMYBL2 in HCC progression.Furthermore,bioinformatics analysis,qRT‒PCR analysis,luciferase reporter assays,and western blot analysis were employed to investigate the interplay among circMYBL2,miR-1205,and E2F1.CircMYBL2 was found to exhibit marked upregulation in tumor tissues as well as HCC cell lines.Elevated expression of circMYBL2 increased the proliferation and migration of HCC cells,whereas circMYBL2 knockdown elicited contrasting effects.Mechanistically,our results indicated that circMYBL2 promoted E2F1 expression and facilitated HCC progression by sponging miR-1205.Our findings revealed that circMYBL2 contributed to HCC progression through the circMYBL2/miR-1205/E2F1 axis,suggesting the potential of circMYBL2 as a novel target for HCC treatment or a prognostic biomarker for HCC.
文摘目的探讨E2F转录因子2(E2F2)和多配体蛋白聚糖-4(SDC4)对急性胰腺炎患者病情评估及预后诊断的价值。方法将2018年4月至2020年4月西安市中心医院收治的45例轻症急性胰腺炎患者作为轻症组,56例重症急性胰腺炎患者为重症组;将同期20名来我院进行健康体检者作为对照组。比较各组研究对象的一般资料及临床特征;比较三组研究对象的E2F2、SDC4 m RNA和蛋白表达水平;分析E2F2、SDC4表达水平与急性胰腺炎患者JPN评分的相关性;分析血清SDC4、E2F2水平和JPN评分对急性胰腺炎的诊断价值。结果轻症组和重症组的腹痛、恶心呕吐发生率无明显差异(P>0.05);重症组的腹胀、全身性并发症发生率高于轻症组(P<0.05);轻症组和重症组的血清淀粉酶、脂肪酶、降钙素原、乳酸脱氢酶(LDH)以及C反应蛋白(CRP)水平高于对照组(P<0.01);重症组的血清淀粉酶、脂肪酶、降钙素原、LDH、CRP水平及JPN评分高于轻症组(P<0.01)。轻症组和重症组的E2F2、SDC4 m RNA和蛋白表达水平显著高于对照组,且重症组高于轻症组(P<0.05)。E2F2和SDC4表达水平与急性胰腺炎患者JPN评分呈正相关(P<0.001);E2F2表达水平与SDC4表达水平呈正相关(P<0.001)。血清E2F2和SDC4水平对急性胰腺炎的诊断价值较高,与JPN评分相似。结论E2F2和SDC4可作为评估急性胰腺炎患者发病及预后的潜在指标。
