The mouse model of oxygen induced retinopathy is suitable for the study of various retinal neovascularization diseases,including retinopathy of prematurity.The maternally expressed gene 3(MEG3)has been demonstrated to...The mouse model of oxygen induced retinopathy is suitable for the study of various retinal neovascularization diseases,including retinopathy of prematurity.The maternally expressed gene 3(MEG3)has been demonstrated to have an inhibitory effect on diabetic retinopathy.In this study,we investigated the role of MEG3 overexpression in oxygen-induced retinopathy in mice.The results showed that MEG3 overexpression effectively inhibited the production of retinal neovascularization in oxygen-induced retinopathy mice.It acts by down-regulating the expression of phosphoinositide 3-kinase,serine/threonine kinase,and vascular endothelial growth factor and pro-inflammatory factors.MEG3 overexpression lentivirus has a future as a new method for the clinical treatment of retinopathy of prematurity.The animal experiments were approved by the Animal Ethics Committee of Shengjing Hospital of China Medical University,China(approval No.2016PS074K)on February 25,2016.展开更多
In China, hepatitis B virus （HBV） infection is the major cause of hepatocellular carcinoma （HCC）, which is called HBV-related HCC （HBV-HCC）, but the pathogenesis has not been clearly elu- cidated. Long non-codin...In China, hepatitis B virus （HBV） infection is the major cause of hepatocellular carcinoma （HCC）, which is called HBV-related HCC （HBV-HCC）, but the pathogenesis has not been clearly elu- cidated. Long non-coding RNAs （lncRNAs） have been paid increasing attention to, as an important regulatory molecule involved in many biological processes, as well as a variety of diseases. This study examined lncRNA that might play an important role in HBV-HCC pathogenesis by conducting lncRNA and mRNA profile comparison between HBV-HCC and normal liver tissues. The differentially ex- pressed lncRNA and mRNA profiles between HBV-HCC and normal liver tissues were analyzed by mi- croarrays. The potential protein-encoding gene regulated by lncRNA, and the biological function （gene ontology, pathway analysis） of the target gene were investigated. The results showed that the expression levels of lncRNA and mRNA in HBV-HCC tissues were different from those in normal liver tissues. As compared with normal liver tissue, 837 （4.30%） lncRNAs exhibited more than two-fold change （P〈0.05）; 325 were up-regulated, and 512 were down-regulated; 991 （5.70%） mRNAs exhibited more than 2-fold change （P〈0.05）; 733 were up-regulated and 258 were down-regulated in HBV-HCC tissue. Besides, there were 7 lncRNAs with above 10-fold elevation, 6 lncRNAs with above 10-fold decrease, 18 mRNAs with above 10-fold elevation and 11 mRNAs with above 10-fold decrease. 444 （53.05%） lncRNAs had their corresponding mRNAs, some of which were adjacent to lncRNAs. The biological analysis showed that the target gene of differentially expressed lncRNAs took part in the important bio- logical regulatory function. Target gene-related pathway analysis revealed the pathways in carcinoma and mitogen-activated protein kinase （MAPK） signaling pathways significantly changed in the HBV-HCC tissues as compared with normal liver tissues （P〈0.05）. It was suggested that as compared with normal liver tissues, the expression of lncRNAs in HBV-HCC tissues changed significantly, and lncRNAs played a key role in the pathogenesis of HBV-HCC probably by mainly regulating the carci- noma-related signaling pathway and MAPK signaling pathways.展开更多
目的:探讨湿性年龄相关性黄斑变性(ARMD)出血患者血清长链非编码RNA母系表达基因3(lncRNA MEG3)和微小RNA-138(miR-138)表达水平及其与患者预后的关系。方法:前瞻性研究。选取2018-01/2021-06收治的湿性ARMD出血患者90例为观察组,选择...目的:探讨湿性年龄相关性黄斑变性(ARMD)出血患者血清长链非编码RNA母系表达基因3(lncRNA MEG3)和微小RNA-138(miR-138)表达水平及其与患者预后的关系。方法:前瞻性研究。选取2018-01/2021-06收治的湿性ARMD出血患者90例为观察组,选择同期在我院进行健康体检人员78名作为对照组。采用实时荧光定量PCR法(qRT-PCR)检测所有受试者血清lncRNA MEG3、miR-138表达水平。观察组患者注射雷珠单抗进行治疗,每月1次,共3次。治疗后随访3mo,根据预后情况分为预后良好组和预后不良组,比较两组患者lncRNA MEG3、miR-138水平。Pearson相关性分析lncRNA MEG3与miR-138的相关关系。采用受试者工作特征曲线(ROC)分析湿性ARMD出血患者预后不良的判断价值。多因素Logistic回归分析湿性ARMD出血患者预后不良的影响因素。结果:与对照组相比,观察组患者血清lncRNA MEG3水平下降(1.13±0.37 vs 0.71±0.21),miR-138水平上升(1.05±0.29 vs 2.23±0.54)(均P<0.05)。湿性ARMD出血患者预后良好组患者血清lncRNA MEG3水平明显高于预后不良组(0.81±0.24 vs 0.49±0.14),而miR-138水平明显低于预后不良组(1.92±0.49 vs 2.87±0.63)(均P<0.05)。Pearson相关性分析结果显示,lncRNA MEG3与miR-138呈负相关(r=-0.381,P<0.05)。ROC曲线结果显示,血清lncRNA MEG3、miR-138表达水平对湿性ARMD出血患者发生预后不良AUC分别为0.859、0.828,截断值分别为0.635、2.455,敏感度分别为89.70%、75.90%,特异性分别为72.10%、82.00%。多因素Logistic回归分析显示lncRNA MEG3是湿性ARMD出血患者预后不良的保护因素,miR-138是危险因素(均P<0.05)。结论:血清lncRNA MEG3、miR-138在湿性ARMD出血患者中表达异常,且对湿性ARMD出血患者的预后不良具有一定的评估价值。展开更多
基金the National Natural Science Foundation of China,No.81600747(to YD)a grant from Liaoning Department of Education,No.QNZR2020010(to YD)a grant from 345 Talent Project of Shengjing Hospital(to YD).
文摘The mouse model of oxygen induced retinopathy is suitable for the study of various retinal neovascularization diseases,including retinopathy of prematurity.The maternally expressed gene 3(MEG3)has been demonstrated to have an inhibitory effect on diabetic retinopathy.In this study,we investigated the role of MEG3 overexpression in oxygen-induced retinopathy in mice.The results showed that MEG3 overexpression effectively inhibited the production of retinal neovascularization in oxygen-induced retinopathy mice.It acts by down-regulating the expression of phosphoinositide 3-kinase,serine/threonine kinase,and vascular endothelial growth factor and pro-inflammatory factors.MEG3 overexpression lentivirus has a future as a new method for the clinical treatment of retinopathy of prematurity.The animal experiments were approved by the Animal Ethics Committee of Shengjing Hospital of China Medical University,China(approval No.2016PS074K)on February 25,2016.
文摘In China, hepatitis B virus （HBV） infection is the major cause of hepatocellular carcinoma （HCC）, which is called HBV-related HCC （HBV-HCC）, but the pathogenesis has not been clearly elu- cidated. Long non-coding RNAs （lncRNAs） have been paid increasing attention to, as an important regulatory molecule involved in many biological processes, as well as a variety of diseases. This study examined lncRNA that might play an important role in HBV-HCC pathogenesis by conducting lncRNA and mRNA profile comparison between HBV-HCC and normal liver tissues. The differentially ex- pressed lncRNA and mRNA profiles between HBV-HCC and normal liver tissues were analyzed by mi- croarrays. The potential protein-encoding gene regulated by lncRNA, and the biological function （gene ontology, pathway analysis） of the target gene were investigated. The results showed that the expression levels of lncRNA and mRNA in HBV-HCC tissues were different from those in normal liver tissues. As compared with normal liver tissue, 837 （4.30%） lncRNAs exhibited more than two-fold change （P〈0.05）; 325 were up-regulated, and 512 were down-regulated; 991 （5.70%） mRNAs exhibited more than 2-fold change （P〈0.05）; 733 were up-regulated and 258 were down-regulated in HBV-HCC tissue. Besides, there were 7 lncRNAs with above 10-fold elevation, 6 lncRNAs with above 10-fold decrease, 18 mRNAs with above 10-fold elevation and 11 mRNAs with above 10-fold decrease. 444 （53.05%） lncRNAs had their corresponding mRNAs, some of which were adjacent to lncRNAs. The biological analysis showed that the target gene of differentially expressed lncRNAs took part in the important bio- logical regulatory function. Target gene-related pathway analysis revealed the pathways in carcinoma and mitogen-activated protein kinase （MAPK） signaling pathways significantly changed in the HBV-HCC tissues as compared with normal liver tissues （P〈0.05）. It was suggested that as compared with normal liver tissues, the expression of lncRNAs in HBV-HCC tissues changed significantly, and lncRNAs played a key role in the pathogenesis of HBV-HCC probably by mainly regulating the carci- noma-related signaling pathway and MAPK signaling pathways.
文摘目的:探讨湿性年龄相关性黄斑变性(ARMD)出血患者血清长链非编码RNA母系表达基因3(lncRNA MEG3)和微小RNA-138(miR-138)表达水平及其与患者预后的关系。方法:前瞻性研究。选取2018-01/2021-06收治的湿性ARMD出血患者90例为观察组,选择同期在我院进行健康体检人员78名作为对照组。采用实时荧光定量PCR法(qRT-PCR)检测所有受试者血清lncRNA MEG3、miR-138表达水平。观察组患者注射雷珠单抗进行治疗,每月1次,共3次。治疗后随访3mo,根据预后情况分为预后良好组和预后不良组,比较两组患者lncRNA MEG3、miR-138水平。Pearson相关性分析lncRNA MEG3与miR-138的相关关系。采用受试者工作特征曲线(ROC)分析湿性ARMD出血患者预后不良的判断价值。多因素Logistic回归分析湿性ARMD出血患者预后不良的影响因素。结果:与对照组相比,观察组患者血清lncRNA MEG3水平下降(1.13±0.37 vs 0.71±0.21),miR-138水平上升(1.05±0.29 vs 2.23±0.54)(均P<0.05)。湿性ARMD出血患者预后良好组患者血清lncRNA MEG3水平明显高于预后不良组(0.81±0.24 vs 0.49±0.14),而miR-138水平明显低于预后不良组(1.92±0.49 vs 2.87±0.63)(均P<0.05)。Pearson相关性分析结果显示,lncRNA MEG3与miR-138呈负相关(r=-0.381,P<0.05)。ROC曲线结果显示,血清lncRNA MEG3、miR-138表达水平对湿性ARMD出血患者发生预后不良AUC分别为0.859、0.828,截断值分别为0.635、2.455,敏感度分别为89.70%、75.90%,特异性分别为72.10%、82.00%。多因素Logistic回归分析显示lncRNA MEG3是湿性ARMD出血患者预后不良的保护因素,miR-138是危险因素(均P<0.05)。结论:血清lncRNA MEG3、miR-138在湿性ARMD出血患者中表达异常,且对湿性ARMD出血患者的预后不良具有一定的评估价值。
