Whether long non-coding RNA myocardial infarction-associated transcript is involved in oxygen-induced retinopathy remains poorly understood. To validate this hypothesis, we established a newborn mouse model of oxygen-...Whether long non-coding RNA myocardial infarction-associated transcript is involved in oxygen-induced retinopathy remains poorly understood. To validate this hypothesis, we established a newborn mouse model of oxygen-induced retinopathy by feeding in an oxygen concentration of 75 ± 2% from postnatal day 8 to postnatal day 12, followed by in normal air. On postnatal day 11, the mice were injected with the myocardial infarction-associated transcript siRNA plasmid via the vitreous cavity to knockdown long non-coding RNA myocardial infarction-associated transcript. Myocardial infarction-associated transcript siRNA transcription significantly inhibited myocardial infarctionassociated transcript mRNA expression, reduced the phosphatidylinosital-3-kinase, phosphorylated Akt and vascular endothelial growth factor immunopositivities, protein and mRNA expression, and alleviated the pathological damage to the retina of oxygen-induced retinopathy mouse models. These findings suggest that myocardial infarction-associated transcript is likely involved in the retinal neovascularization in retinopathy of prematurity and that inhibition of myocardial infarction-associated transcript can downregulate phosphatidylinosital-3-kinase, phosphorylated Akt and vascular endothelial growth factor expression levels and inhibit neovascularization. This study was approved by the Animal Ethics Committee of Shengjing Hospital of China Medical University, China(approval No. 2016 PS074 K) on February 25, 2016.展开更多
Recently,with the advent of high-resolution and high-throughput sequencing technologies,an increasing number of long non-coding RNAs(lncRNAs)have been found to be involved in the regulation of neuronal function in the...Recently,with the advent of high-resolution and high-throughput sequencing technologies,an increasing number of long non-coding RNAs(lncRNAs)have been found to be involved in the regulation of neuronal function in the central nervous system with specific spatiotemporal patterns,across different neurodegenerative diseases.However,the underlying mechanisms of lncRNAs during neurodegeneration remain poorly understood.This review provides an overview of the current knowledge of the biology of lncRNAs and focuses on introducing the latest identified roles,regulatory mechanisms,and research status of lncRNAs in Alzheimer's disease,Parkinson's disease,Huntington's disease,and amyotrophic lateral sclerosis.Finally,this review discusses the potential values of lncRNAs as diagnostic biomarkers and therapeutic targets for neurodegenerative diseases,hoping to provide broader implications for developing effective treatments.展开更多
Non-alcoholic fatty liver disease(NAFLD)is emerging as a common cause of chronic liver disease in children and adults.NAFLD can progress to steatohepa-titis and potentially even hepatocellular carcinoma.Early identifi...Non-alcoholic fatty liver disease(NAFLD)is emerging as a common cause of chronic liver disease in children and adults.NAFLD can progress to steatohepa-titis and potentially even hepatocellular carcinoma.Early identification of pati-ents at risk for progressive disease is crucial for managing NAFLD.Recent studies have identified long noncoding RNAs(lncRNAs),circular RNAs,and microRNAs as playing important roles in the pathogenesis of NAFLD.These noncoding RNAs are involved in modulating several metabolic pathways such as hepatic glucose and lipid metabolism,oxidative stress,and even carcinogenesis.Elevated levels of lncARSR and lncRNA nuclear-enriched abundant transcript 1 have been found in patients with NAFLD.In addition,lncRNAs such as PRYP4-3 and RP11-128N14.5 can distinguish patients with NAFLD from healthy indi-viduals.Increased MEG3 expression has been observed in both NAFLD and non-alcoholic steatohepatitis,suggesting that it may help predict patients at risk for disease progression.With advances in transcriptomics,we may discover additional targets to help in the identification and prognostication of NAFLD.展开更多
Long non-coding RNAs(lncRNAs) belong to a large and complex family of RNAs, which play many important roles in regulating gene expression. However, the mechanism underlying the dynamic expression of lncRNAs is still n...Long non-coding RNAs(lncRNAs) belong to a large and complex family of RNAs, which play many important roles in regulating gene expression. However, the mechanism underlying the dynamic expression of lncRNAs is still not very clear. In order to identify lncRNAs and clarify the mechanisms involved, we collected basic information and highlighted the mechanisms underlying lncRNA expression and regulation. Overall, lncRNAs are regulated by several similar transcription factors and protein-coding genes. Epigenetic modification(DNA methylation and histone modification) can also downregulate lncRNA levels in tissues and cells. Moreover, lncRNAs may be degraded or cleaved via interaction with miRNAs and miRNAassociated protein complexes. Furthermore, alternative RNA splicing(AS) may play a significant role in the post-transcriptional regulation of lncRNAs.展开更多
目的检测急性冠脉综合征(acute coronary syndrome,ACS)患者血清长链非编码RNA X染色体失活特异转录物(LncRNA X inactivate-specific transcript,LncRNA XIST)和微小RNA(miR)-330-3p水平,分析二者与心脏自主神经功能的关系。方法选取2...目的检测急性冠脉综合征(acute coronary syndrome,ACS)患者血清长链非编码RNA X染色体失活特异转录物(LncRNA X inactivate-specific transcript,LncRNA XIST)和微小RNA(miR)-330-3p水平,分析二者与心脏自主神经功能的关系。方法选取2020年2月~2021年6月在华北石油管理局总医院诊断为ACS的患者156例,包括不稳定型心绞痛(unstable angina,UA)80例(UA组)和急性心肌梗死(acute myocardial infarction,AMI)76例(AMI组);另选取同期体检健康者100例作为对照组。实时荧光定量PCR法检测受试者血清LncRNA XIST和miR-330-3p水平;24 h动态心电图检测受试者心率变异性(heart rate variability,HRV)时域指标[包括:24 h内正常R-R间期标准差(SDNN)、每5 min R-R间期平均值的标准差(SDANN)、每5 min R-R间期标准差的平均值(SDNN index)、相邻R-R间期之差的均方根(RMSSD)及相邻R-R间期相差>50 ms心搏数占总心搏数的百分比(PNN50)]以及Pearson法分析ACS患者血清LncRNA XIST和miR-330-3p水平与HRV时域指标的相关性。结果与对照组比较,UA组和AMI组血清LncRNA XIST(1.37±0.26,1.69±0.31 vs 1.09±0.22)水平升高(F=113.587,P=0.000),miR-330-3p(0.82±0.15,0.53±0.12 vs 1.03±0.18)及SDANN(115.96±19.57 ms,98.96±16.57 ms vs 133.43±21.01 ms),SDNN(113.84±15.26 ms,101.84±11.22 ms vs 136.41±31.53 ms),SDNN index(54.68±6.72 ms,46.73±5.14 ms vs 64.68±10.64 ms),RMSSD(27.48±5.62 ms,21.37±3.64 ms vs 36.48±8.62 ms)和PNN50(7.58%±2.83%,4.18%±1.13%vs 10.72%±3.21%)水平均降低(F=54.923~225.201,均P=0.000),差异均有统计学意义。与UA组比较,AMI组血清LncRNA XIST水平升高(t=10.792,P<0.05),miR-330-3p及SDANN,SDNN,SDNN index,RMSSD和PNN50水平降低,差异有统计学意义(t=4.743~16.538,均P<0.05);ACS患者血清LncRNA XIST与SDNN index,RMSSD和PNN50呈负相关(r=-0.465,-0.532,-0.542,均P<0.05);miR-330-3p与SDNN index,RMSSD和PNN50呈正相关(r=0.471,0.562,0.561,均P<0.05)。结论ACS患者血清LncRNA XIST水平升高,miR-330-3p水平降低,与心脏自主神经功能有关,可作为防治ACS的重要靶点。展开更多
基金supported by the National Natural Science Foundation of China,No.81600747(to YD)the Start-Up Foundation for Doctors of Liaoning Province,China,No.201501020(to YD)。
文摘Whether long non-coding RNA myocardial infarction-associated transcript is involved in oxygen-induced retinopathy remains poorly understood. To validate this hypothesis, we established a newborn mouse model of oxygen-induced retinopathy by feeding in an oxygen concentration of 75 ± 2% from postnatal day 8 to postnatal day 12, followed by in normal air. On postnatal day 11, the mice were injected with the myocardial infarction-associated transcript siRNA plasmid via the vitreous cavity to knockdown long non-coding RNA myocardial infarction-associated transcript. Myocardial infarction-associated transcript siRNA transcription significantly inhibited myocardial infarctionassociated transcript mRNA expression, reduced the phosphatidylinosital-3-kinase, phosphorylated Akt and vascular endothelial growth factor immunopositivities, protein and mRNA expression, and alleviated the pathological damage to the retina of oxygen-induced retinopathy mouse models. These findings suggest that myocardial infarction-associated transcript is likely involved in the retinal neovascularization in retinopathy of prematurity and that inhibition of myocardial infarction-associated transcript can downregulate phosphatidylinosital-3-kinase, phosphorylated Akt and vascular endothelial growth factor expression levels and inhibit neovascularization. This study was approved by the Animal Ethics Committee of Shengjing Hospital of China Medical University, China(approval No. 2016 PS074 K) on February 25, 2016.
基金supported by the National Natural Science Foundation of China,Nos.91649119 and 92049105(both to JL)。
文摘Recently,with the advent of high-resolution and high-throughput sequencing technologies,an increasing number of long non-coding RNAs(lncRNAs)have been found to be involved in the regulation of neuronal function in the central nervous system with specific spatiotemporal patterns,across different neurodegenerative diseases.However,the underlying mechanisms of lncRNAs during neurodegeneration remain poorly understood.This review provides an overview of the current knowledge of the biology of lncRNAs and focuses on introducing the latest identified roles,regulatory mechanisms,and research status of lncRNAs in Alzheimer's disease,Parkinson's disease,Huntington's disease,and amyotrophic lateral sclerosis.Finally,this review discusses the potential values of lncRNAs as diagnostic biomarkers and therapeutic targets for neurodegenerative diseases,hoping to provide broader implications for developing effective treatments.
文摘Non-alcoholic fatty liver disease(NAFLD)is emerging as a common cause of chronic liver disease in children and adults.NAFLD can progress to steatohepa-titis and potentially even hepatocellular carcinoma.Early identification of pati-ents at risk for progressive disease is crucial for managing NAFLD.Recent studies have identified long noncoding RNAs(lncRNAs),circular RNAs,and microRNAs as playing important roles in the pathogenesis of NAFLD.These noncoding RNAs are involved in modulating several metabolic pathways such as hepatic glucose and lipid metabolism,oxidative stress,and even carcinogenesis.Elevated levels of lncARSR and lncRNA nuclear-enriched abundant transcript 1 have been found in patients with NAFLD.In addition,lncRNAs such as PRYP4-3 and RP11-128N14.5 can distinguish patients with NAFLD from healthy indi-viduals.Increased MEG3 expression has been observed in both NAFLD and non-alcoholic steatohepatitis,suggesting that it may help predict patients at risk for disease progression.With advances in transcriptomics,we may discover additional targets to help in the identification and prognostication of NAFLD.
文摘Long non-coding RNAs(lncRNAs) belong to a large and complex family of RNAs, which play many important roles in regulating gene expression. However, the mechanism underlying the dynamic expression of lncRNAs is still not very clear. In order to identify lncRNAs and clarify the mechanisms involved, we collected basic information and highlighted the mechanisms underlying lncRNA expression and regulation. Overall, lncRNAs are regulated by several similar transcription factors and protein-coding genes. Epigenetic modification(DNA methylation and histone modification) can also downregulate lncRNA levels in tissues and cells. Moreover, lncRNAs may be degraded or cleaved via interaction with miRNAs and miRNAassociated protein complexes. Furthermore, alternative RNA splicing(AS) may play a significant role in the post-transcriptional regulation of lncRNAs.
文摘目的检测急性冠脉综合征(acute coronary syndrome,ACS)患者血清长链非编码RNA X染色体失活特异转录物(LncRNA X inactivate-specific transcript,LncRNA XIST)和微小RNA(miR)-330-3p水平,分析二者与心脏自主神经功能的关系。方法选取2020年2月~2021年6月在华北石油管理局总医院诊断为ACS的患者156例,包括不稳定型心绞痛(unstable angina,UA)80例(UA组)和急性心肌梗死(acute myocardial infarction,AMI)76例(AMI组);另选取同期体检健康者100例作为对照组。实时荧光定量PCR法检测受试者血清LncRNA XIST和miR-330-3p水平;24 h动态心电图检测受试者心率变异性(heart rate variability,HRV)时域指标[包括:24 h内正常R-R间期标准差(SDNN)、每5 min R-R间期平均值的标准差(SDANN)、每5 min R-R间期标准差的平均值(SDNN index)、相邻R-R间期之差的均方根(RMSSD)及相邻R-R间期相差>50 ms心搏数占总心搏数的百分比(PNN50)]以及Pearson法分析ACS患者血清LncRNA XIST和miR-330-3p水平与HRV时域指标的相关性。结果与对照组比较,UA组和AMI组血清LncRNA XIST(1.37±0.26,1.69±0.31 vs 1.09±0.22)水平升高(F=113.587,P=0.000),miR-330-3p(0.82±0.15,0.53±0.12 vs 1.03±0.18)及SDANN(115.96±19.57 ms,98.96±16.57 ms vs 133.43±21.01 ms),SDNN(113.84±15.26 ms,101.84±11.22 ms vs 136.41±31.53 ms),SDNN index(54.68±6.72 ms,46.73±5.14 ms vs 64.68±10.64 ms),RMSSD(27.48±5.62 ms,21.37±3.64 ms vs 36.48±8.62 ms)和PNN50(7.58%±2.83%,4.18%±1.13%vs 10.72%±3.21%)水平均降低(F=54.923~225.201,均P=0.000),差异均有统计学意义。与UA组比较,AMI组血清LncRNA XIST水平升高(t=10.792,P<0.05),miR-330-3p及SDANN,SDNN,SDNN index,RMSSD和PNN50水平降低,差异有统计学意义(t=4.743~16.538,均P<0.05);ACS患者血清LncRNA XIST与SDNN index,RMSSD和PNN50呈负相关(r=-0.465,-0.532,-0.542,均P<0.05);miR-330-3p与SDNN index,RMSSD和PNN50呈正相关(r=0.471,0.562,0.561,均P<0.05)。结论ACS患者血清LncRNA XIST水平升高,miR-330-3p水平降低,与心脏自主神经功能有关,可作为防治ACS的重要靶点。
