miR-21-5p promotes NASH-related hepatocarcinogenesis

Background and Aims

The mechanisms governing the progression of non-alcoholic fatty liver disease (NAFLD) towards steatohepatitis (NASH) and hepatocellular carcinoma (HCC) remain elusive. Here, we evaluated the role of hsa-miRNA-21-5p in NASH-related hepatocarcinogenesis.

Methods

Hepatic hsa-miR-21-5p expression was evaluated in two cohorts of patients with biopsy-proven NAFLD (n = 199) or HCC (n = 366 HCC and n = 11 NAFLD-HCC). Serum/liver metabolomic profiles were correlated with hsa-miR-21-5p in NAFLD obese patients. Wild-type (WT) and Mir21 KO mice were fed a choline-deficient, amino acid-defined (CDAA) diet for 32 and 66 weeks to induce NASH and NASH-HCC, respectively.

Results

In obese individuals, hsa-miR-21-5p expression increased with NAFLD severity and associated with a hepatic lipotoxic profile. CDAA-fed WT mice displayed increased hepatic mmu-miR-21-5p levels and progressively developed NASH and fibrosis, with livers presenting macroscopically discernible pre-neoplastic nodules, hyperplastic foci and deregulated cancer-related pathways. Mir21 KO mice exhibited peroxisome-proliferator-activated receptor α (PPARα) activation, augmented mitochondrial activity, reduced liver injury and NAS below the threshold for NASH diagnosis, with the pro-inflammatory/fibrogenic milieu reversing to baseline levels. In parallel, Mir21 KO mice displayed reduced number of pre-neoplastic nodules, hepatocyte proliferation and activation of oncogenic signalling, being protected from NASH-associated carcinogenesis. The hsa-miRNA-21-5p/PPARα pathway was similarly deregulated in patients with HCC- or NASH-related HCC, correlating with HCC markers and worse prognosis.

Conclusions

Hsa-miR-21-5p is a key inducer of whole-spectrum NAFLD progression, from simple steatosis to NASH and NASH-associated carcinogenesis. The inhibition of hsa-miR-21-5p, leading to a pro-metabolic profile, might constitute an appealing therapeutic approach to ameliorate NASH and prevent progression towards HCC.     

血浆miR-1228-5p、miR-34a-5p、miR-192-5p和miR-30a-3p水平与早发冠心病的相关性及其初筛价值

目的]探讨血浆miR-1228-5p、miR-34a-5p、miR-192-5p和miR-30a-3p水平与早发冠心病(PCAD)的相关性及其对PCAD的初筛价值。[方法]根据纳入标准及排除标准,纳入6例明确诊断的PCAD患者作为PCAD组,纳入6例健康受试者作为对照组,收集PCAD组和对照组血液,提取血清样本并保存,使用DNBseq平台检测两组血清中miRNA水平,筛选差异水平显著的miRNA。根据纳入标准及排除标准,收集78例PCAD患者、75例晚发冠心病患者和69例健康对照者的血液并对筛选的miRNA进行实时荧光定量PCR验证。分析PCAD患者冠状动脉造影报告,采用Gensini评分评估冠状动脉病变的严重程度。Spearman相关性检验分析有关miRNA水平与冠状动脉狭窄程度的相关性。ROC曲线分析血浆miR-1228-5p、miR-34a-5p、miR-192-5p及miR-30a-3p水平对PCAD的诊断价值,多因素Logistic回归分析PCAD发生的影响因素。[结果]DNBseq平台分析显示,差异表达miRNA 33个,其中上调miRNA 17个,下调miRNA 16个,差异水平最为显著的5个miRNA分别为miR-1228-5p、miR-34a-5p、miR-192-5p、miR-424-3p和miR-30a-3p;实时荧光定量PCR结果显示,与对照组相比,PCAD患者血浆miR-1228-5p升高1.7倍,miR-34a-5p升高1.4倍,miR-192-5p升高0.7倍,miR-30a-3p升高2.5倍(P＜0.05),两组间血浆miR-424-3p水平差异无统计学意义(P＞0.05);血浆miR-1228-5p和miR-34a-5p水平与PCAD患者冠状动脉狭窄程度均呈正相关(r＝0.307,P＝0.004;r＝0.238,P＝0.036);ROC曲线分析显示,miR-1228-5p、miR-34a-5p、miR-192-5p和miR-30a-3p诊断PCAD的ROC曲线下面积分别为0.903、0.832、0.731及0.798,其联合诊断PCAD的ROC曲线下面积为0.990,95%CI为0.976～1.000。[结论]PCAD患者血浆miR-1228-5p、miR-34a-5p、miR-192-5p和miR-30a-3p水平显著升高,其联合检测诊断PCAD具有较高的准确性,有望成为初筛PCAD的新型生物标志物。     

血清miR-92a-1-5p及miR-92a-2-5p表达水平与老年卒中后抑郁的关系

目的 分析血清微小核糖核酸-92a-1-5p ( miR-92a-1-5p)、 miR-92a-2-5p 表达水平与老年卒中后抑郁的关系.方法 选取2018年2月至2020年10月胶州中心医院收治的129例老年卒中患者为研究组,另选取110名同期健康体检者为对照组,均检测血清miR-92a-1-5p、miR-92a-2...     

外周血miR-338-5p、miR-140-5p在HBV相关肝细胞癌患者中表达水平及临床意义

目的?探讨外周血血清中微小RNA（microRNA, miR）-338-5p、miR-140-5p在HBV相关肝细胞癌患者中表达水平及临床意义。方法?选取2017年11月—2020年11月我院收治的HBV相关肝细胞癌患者95例作为肝细胞癌组，另选取同时期HBV相关良性肝病患者100例作为良性组，及健康体检者100例作为对照组。采用实时荧光定量PCR检测外周血血清中miR-338-5p、miR-140-5p表达水平及HBV DNA载量，采用Pearson相关分析分析HBV相关肝细胞癌患者外周血血清中miR-338-5p、miR-140-5p表达水平与HBV DNA载量的关系，采用多因素Logistic回归模型分析影响HBV相关肝细胞癌发生的危险因素；ROC曲线分析miR-338-5p、miR-140-5p、异常凝血酶原-Ⅱ（abnormal prothrombin-Ⅱ, PIVKA-Ⅱ）表达对HBV相关肝细胞癌的诊断价值。结果?外周血血清中miR-338-5p、PIVKA-Ⅱ表达水平从高至低依次为肝细胞癌组[（2.73±0.88）、（103.14，319.19）mAU/ml]、良性组[（1.48±0.40）、（32.70，87.15）mAU/ml]、对照组[（1.00±0.27）、（10.36，16.82）mAU/ml]，外周血血清中miR-140-5p表达水平从高至低依次为对照组（1.00±0.25）、良性组（0.72±0.20）、肝细胞癌组（0.38±0.12），两两比较差异均具有统计学意义（P均＜0.05）；肝细胞癌组患者HBV DNA载量（144.97±47.32）明显高于良性组（75.66±21.91）（P＜0.05）。不同TNM分期患者间比较，外周血血清中miR-338-5p、PIVKA-Ⅱ表达水平及HBV DNA载量从高至低依次为TNM Ⅳ期、Ⅲ期、Ⅱ期、Ⅰ期，外周血血清中miR-140-5p表达水平从高至低依次为TNM Ⅰ期、Ⅱ期、Ⅲ期、Ⅳ期，两两比较差异均有统计学意义（P均＜0.05）。HBV相关肝细胞癌患者外周血血清中miR-338-5p表达水平与HBV DNA载量呈正相关（P＜0.05），而miR-140-5p表达水平与HBV DNA载量呈负相关（P＜0.05）。HBV相关肝细胞癌发生与患者有无糖尿病史、有无长期饮酒史、HBV DNA载量及外周血血清中miR-338-5p、miR-140-5p、PIVKA-Ⅱ表达水平有关（P均＜0.05）。多因素Logistic回归分析显示外周血血清中PIVKA-Ⅱ＞40 mAU/ml、miR-338-5p高表达、miR-140-5p低表达是影响HBV相关肝细胞癌发生的独立危险因素（P＜0.05）。外周血血清中miR-338-5p、miR-140-5p、PIVKA-Ⅱ表达水平联合诊断HBV相关肝细胞癌的AUC为0.930，明显高于3指标单独诊断的AUC（P均＜0.05），联合诊断的敏感度为98.90%，特异度为87.00%。结论?HBV相关肝细胞癌患者外周血血清中miR-338-5p高表达，miR-140-5p低表达，2者可作为评估HBV相关肝细胞癌发生的血清指标，2者联合PIVKA-Ⅱ更有利于诊断HBV相关肝细胞癌。     

Neuroprotective effects of miR-532-5p against ischemic stroke

Metabolic Brain Disease - Stroke can cause death and disability and has a high incidence with many complications. So far, effective treatment options for stroke are still limited. MicroRNA-532-5p...     

miR-127-3p在动脉粥硬化中的表达及干扰miR-127-3p对PDGF-BB处理的HAoSMC增殖迁移的影响

目的探讨miR-127-3p对血小板衍生生长因子-BB(PDGF-BB)诱导的人主动脉平滑肌细胞(HAoSMC)增殖、迁移的影响。方法收集动脉粥硬化患者及正常者血清,将HAoSMC分为对照组(未作任何处理)、模型组(25μg/L PDGF-BB)、anti-miR-NC组(转染miR-127-3p抑制剂对照+25μg/L PDGF-BB)、anti-miR-127-3p组(转染miR-127-3p抑制剂+25μg/L PDGF-BB)。实时荧光定量PCR(RT-qPCR)检测miR-127-3p和NF-κB mRNA表达水平;流式细胞仪检测细胞周期;四甲基偶氮唑盐比色法(MTT)检测细胞增殖活力;Transwell检测细胞迁移;蛋白质印迹(Western blot)法检测细胞增殖核抗原Ki67(Ki67)、神经钙粘蛋白(N-cadherin)、上皮钙粘蛋白(E-cadherin)的表达。结果与正常对照组相比,动脉粥硬化患者血清中miR-127-3p表达水平升高(P<0.05)。与对照组相比,模型组miR-127-3p表达水平升高,G0-G1期细胞所占比例降低,S期细胞所占比例升高,细胞OD值升高,迁移细胞数增加,Ki67、N-cadherin表达水平升高,E-cadherin表达水平降低(P<0.05)。与antimiR-NC组相比,anti-miR-127-3p组miR-127-3p表达水平降低,G0-G1期细胞所占比例升高,S期细胞所占比例降低,细胞OD值降低,迁移细胞数减少,Ki67、N-cadherin表达水平降低,E-cadherin表达水平升高,NF-κB mRNA表达水平降低(P<0.05)。结论干扰miR-127-3p表达可抑制PDGF-BB处理的HAoSMC增殖、迁移,其机制可能与NF-κB信号通路有关。     

帕金森病患者血清miR-103a-3p、miR-486-5p水平变化及临床意义

目的 探讨帕金森病(PD)患者血清miR-103a-3p、miR-486-5p水平变化及临床意义.方法 选取183例PD患者为PD组,根据Hoehn-Yahr分级分为重度组(n=53)、中度组(n=71)、轻度组(n=59),另选取75例体检健康者为对照组.采用qRT-PCR检测血清miR-103a-3p、miR-48...     

结核潜伏感染者全血miR-144-3p、miR-146a-5p的表达

目的探讨结核潜伏感染者全血miR-144-3p、miR-146a-5p的表达及其与活动性肺结核患者的差异。方法收集结核潜伏感染者30例,活动性肺结核患者30例。收集全血,提取总RNA,利用反转录-荧光定量PCR方法检测miR-144-3p、miR-146a-5p的表达。两组间比较采用t检验。结果结核潜伏感染者全血中miRNA144-3p的表达(2.014±1.48)比活动性肺结核患者(1.056±0.746)明显提高,差异有统计学意义(P<0.05),而结核潜伏感染者全血中miR-146a-5p的表达(1.937±1.109)与活动性肺结核患者(1.469±0.693)相似,差异无统计学意义(P>0.05)。结论 miR-144-3p可能成为诊断结核潜伏感染者的标志物。     

MiR-590-3p在胰腺癌干细胞中的表达

目的 应用无血清培养基分离胰腺癌干细胞,检测其miR-590-3p的表达。方法 运用无血清培养基克隆培养ASPC-1、PANC1细胞,检测其单克隆形成、分化及细胞周期、半数抑制浓度(IC50)和表面标记物CD24+、CD44+表达。实时定量PCR法检测细胞miR-590-3p的表达。结果 经无血清培养基培养,(0.94±0.53)％的ASPC-1细胞和(0.57±0.12)％的PANC1细胞能存活,呈克隆球样悬浮生长,并可以在体外连续传代。加入血清后细胞球又重新贴壁生长。ASPC-1细胞球G0/G1期比例和CD24+、C44+、CD24+ CD44+的细胞比例及IC50分别为(75.3±5.4)％、0.96％～2.01％、27.52％～34.47％、0.35％ ～0.44％和(224.37±5.71) μg/ml,均显著高于亲本细胞的(43.7±3.8)％、0.38％～0.42％、17.65％ ～ 18.25％、0.05％～ 0.08％、(11.43±2.10) μg/ml(P值均＜0.05)。PANC1细胞球G0/G1期比例和CD24+、CD44+、CD24 +CD44+的细胞比例及IC50分别为(80.1±4.7)％、5.31％ ～9.84％、72.05％ ～93.06％、4.91％ ～5.21％、(296.58±4.27) μg/ml,均显著高于亲本细胞的(46.1±5.3)％、4.09％～4.97％、47.71％～55.66％、1.48％ ～2.63％、(26.17±3.81) μg/ml(P值均＜0.05)。ASPC-1、PANC1细胞球miR-590-3p表达分别是亲本细胞的4.67和4.52倍。结论 应用无血清培养基可以从ASPC-1、PANC1细胞系中分离出具有干细胞特性的胰腺癌细胞球,其miR-590-3p表达上调,该基因可能是胰腺癌干细胞特性维持的关键基因。     

miR-182-5p Attenuates High-Fat -Diet-Induced Nonalcoholic Steatohepatitis in Mice

Introduction and aim. Patients with NASH have increased risk for sepsis or cardiovascular disease after Liver transplantation. An important role of Toll-like receptor (TLR) 4 in the pathogenesis of nonalcoholic steatohepatitis (NASH) was demonstrated. Here, we study the role of miR-182-5p in TLR4 expression and high-fat-diet (HFD)-induced NASH in vitro and in vivoMaterial and methods. Following transfection with a miR-182-5p mimic, the effect of miR-182-5p on TLR4 in RAW264.7 and HepG2 cells was investigated. Following administration of the miR-182-5p mimic into the livers of HFD-induced NASH mice, we determined the in vivo expression of TLR4, TNFa, and IL-6 and assessed the histologic features of the livers.Results Following lipopolysaccharide (LPS) treatment of RAW264.7 cells, real-time RT-PCR and western blot results indicated decreases levels of TLR4 mRNA and protein in the miR-182-5p group as compared with levels observed in controls, with similar trends were observed in TNFa and IL-6 protein levels. Following oleic acid (OA) treatment of HepG2 cells, TLR4, TNFa, and IL-6 levels were significantly decreased in the miR-182-5p group as compared with levels observed in controls. Following miR-182-5p administration, TLR4 mRNA and protein levels decreased along with those of TNFa and IL-6 proteins, and the liver weight/body weight ratio of treated mice was less than that observed in controls. Furthermore, hematoxylin and eosin staining showed that the miR-182-5p-treated group exhibited low adiposecell cross-sectional areas, and Oil Red O staining showed decreases in the size of lipid droplets in the miR-182-5p-treated group.Conclusions. miR-182-5p ameliorated HFD-induced NASH by suppressing TLR4.     

高血压性脑出血患者血清miR-141-3p、 miR-29a-3p水平变化及临床意义

目的 观察高血压性脑出血(HICH)患者血清miR-141-3p、miR-29a-3p水平变化,并探讨其与病情以及预后的关系.方法 选择167例HICH患者(HICH组),根据斯堪纳维亚卒中量表(SSS)评分将患者分为轻型组(0～15分,42例)、中型组(16～30分,67例)和重型组(31～45分,58例),根据出院3个月后格拉斯哥预后(GOS)评分分为预后良好组(>4分,87例),预后不良组(≤4分,80例),另选择同期于我院体检的64例健康志愿者(对照组).比较组间血清miR-141-3p、miR-29a-3p和肿瘤坏死因子-α(TNF-α)、IL-1β和IL-6水平.采用Pearson相关分析miR-141-3p、miR-29a-3p与炎性因子的相关性,多因素Logistic回归分析HICH患者预后不良的危险因素,受试者工作特征(ROC)曲线分析miR-141-3p、miR-29a-3p预测HICH患者预后不良的价值.结果 HICH组血清miR-141-3p、miR-29a-3p水平低于对照组,血清TNF-α、IL-1β和IL-6水平高于对照组(P均<0.01).重型组血清miR-141-3p、miR-29a-3p水平低于中型组和轻型组,血清TNF-α、IL-1β、IL-6水平高于中型组和轻型组(P均<0.01);中型组血清miR-141-3p、miR-29a-3p水平低于轻型组,血清TNF-α、IL-1β、IL-6水平高于轻型组(P均<0.01).HICH组血清miR-141-3p、miR-29a-3p水平与TNF-α、IL-1β、IL-6水平均呈负相关(P均<0.01).高水平miR-141-3p(OR=0.656,95％CI:0.500～0.862,P<0.01)、miR-29a-3p(OR=0.733,95％CI:0.581～0.926,P<0.01)是HICH预后的保护因素.miR-141-3p、miR-29a-3p预测HICH预后不良的曲线下面积为0.675、0.688,联合预测曲线下面积为0.898,高于单独指标预测(Z分别为4.950、5.325,P均<0.05).结论 HICH患者血清miR-141-3p、miR-29a-3p水平均降低,且与神经损伤程度加重以及预后不良有关.     

Hydroxychloroquine effects on miR-155-3p and miR-219 expression changes in animal model of multiple sclerosis

Metabolic Brain Disease - Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system which causes chronic demyelination. Hydroxychloroquine (HCQ) possess...     

Concomitant dysregulation of microRNAs miR-151-3p and miR-126 correlates with improved survival in resected cholangiocarcinoma

Background

MicroRNAs (miRNAs) are small non-coding genes which become dysregulated in cancer and may predict survival. The role of miRNAs in outcomes in cholangiocarcinoma (CC) has not been reported.

Methods

RNA was extracted from 32 resected CCs along with adjacent uninvolved bile duct epithelium. A total of 43 miRNAs were quantified using NanoString™. Clinicopathologic characteristics and outcomes were captured and compared. Overall survival curves were created using the Kaplan–Meier method; factors, including miRNA expression, were compared by log-rank, chi-squared or Cox regression analyses.

Results

Absolute expression of each miRNA was compared with overall survival after excluding perioperative deaths (n= 3). One upregulated (miR-151-3p; P= 0.003) and one downregulated (miR-126; P= 0.023) miRNA in resected CC relative to adjacent normal bile duct epithelium correlated with survival on univariate analysis. Clinical factors and these miRNAs were compared. Dysregulated miR-151-3p and miR-126, respectively, were the only factors that correlated with improved overall survival [41.5 months vs. 12.3 months (P= 0.002) and 21.9 months vs. 15.1 months (P= 0.02), respectively]. In eight patients, both miRNAs were dysregulated. In the remainder, only one or neither showed dysregulation. Concomitant dysregulation correlated with the best overall survival (58.7 months vs. 15.1 months; P < 0.000; n= 8); clinicopathologic factors in these groups were otherwise similar.

Conclusions

In resected CC, the concomitant dysregulation of both miR-151-3p and miR-126 was the factor related to the greatest improvement in overall survival. Further analysis of the targets of these miRNAs may yield potential therapeutic targets or prognostic biomarkers.     

miR-31-5p通过靶向抑制胰岛素降解酶发挥促进动脉粥样硬化作用

目的　探讨miR-31-5p是否通过靶向抑制胰岛素降解酶（IDE）发挥促进动脉粥样硬化作用。方法　应用生物信息学和双荧光素酶技术筛选并验证miR-31-5p与IDE　3’UTR靶向结合情况。miR-31-5p　mimic和inhibitor转染THP-1巨噬细胞及THP-1巨噬细胞源性泡沫细胞;采用miR-31-5p　agomir处理高脂饮食的ApoE^－/－小鼠;Western　blot检测IDE蛋白表达;ELISA检测ApoE^－/－小鼠血浆脂质水平;油红O染色检测小鼠肝脏脂质蓄积及主动脉粥样硬化斑块病变。结果　miR-31-5p靶向结合IDE　3’UTR　并引起转录抑制;miR-31-5p可下调THP-1细胞、小鼠肝脏和主动脉组织中IDE蛋白表达（P<　0.05）,同时引起泡沫细胞和小鼠血清中脂质含量增加（P<　0.05）,小鼠主动脉窦和主动脉树病变面积明显增加（P<0.05）。结论　miR-31-5p可通过靶向抑制IDE发挥促进动脉粥样硬化作用。