目的通过检测口腔癌皮下移植瘤小鼠小肠中代谢物和代谢通路的变化,分析过表达miR-181a-5p对皮下移植瘤小鼠小肠中代谢物和代谢物组的影响。方法实验分为3组,空白对照(Control)组、阴性对照(negative control,NC)组以及实验(over express...目的通过检测口腔癌皮下移植瘤小鼠小肠中代谢物和代谢通路的变化,分析过表达miR-181a-5p对皮下移植瘤小鼠小肠中代谢物和代谢物组的影响。方法实验分为3组,空白对照(Control)组、阴性对照(negative control,NC)组以及实验(over expression of miR-181a-5p,OE)组。将不同组别处理后的细胞混悬液,通过皮下注射到M-NSG重度免疫缺陷雌性小鼠右侧腹股沟中上部,构建成口腔癌皮下移植瘤小鼠模型。按时记录小鼠体重变化,对小鼠小肠组织进行HE染色,观察各组病理变化。采用超高效液相色谱-串联飞行时间质谱联用仪和串联Orbitrap质谱联用仪检测NC组、OE组和Control组小鼠小肠中的代谢物,使用XCMS预分析原始数据,质量评价样本数据,鉴定Control组与NC组、NC组与OE组的差异代谢物,进行KEGG富集分析获取差异代谢通路。结果Control组和NC组小肠组织中共鉴定出170种差异代谢物。代谢物富集的显著性信号通路包括胆碱代谢、丙氨酸、天冬氨酸和谷氨酸代谢、γ-氨基丁酸(GABA)神经突触代谢、甘油磷脂代谢、环磷酸腺苷(cAMP)信号通路代谢、癌症中心碳代谢以及烟酸和烟碱胺代谢通路。NC组和OE组相比,小鼠小肠中检测到VIP(variable importance in the projection)>2的差异代谢物有16种,显著性差异代谢物包括甘油磷酰胆碱、棕榈酸、3-羟基丁酰肉碱、β-羟丁酸等。代谢物富集到的显著性差异通路为胆碱代谢通路。结论口腔癌皮下移植瘤可引起小鼠小肠的代谢物发生变化,主要改变了小肠中与能量代谢相关的代谢物。过表达miR-181a-5p影响口腔癌皮下移植瘤小鼠小肠代谢物,代谢物富集通路为胆碱代谢通路。展开更多
BACKGROUND Diabetic kidney disease(DKD),characterized by increased urinary microalbumin levels and decreased renal function,is the primary cause of end-stage renal di-sease.Its pathological mechanisms are complicated ...BACKGROUND Diabetic kidney disease(DKD),characterized by increased urinary microalbumin levels and decreased renal function,is the primary cause of end-stage renal di-sease.Its pathological mechanisms are complicated and multifactorial;Therefore,sensitive and specific biomarkers are needed.Urinary exosome originate from diverse renal cells in nephron segments and partially mirror the pathological changes in the kidney.The microRNAs(miRNAs)in urinary exosome are remark-ably stable and highly tissue-specific for the kidney.METHODS Type 2 diabetic mellitus(T2DM)patients were recruited from the Second Hospital of Hebei Medical University and were divided into two groups:DM,diabetic pa-tients without albuminuria[urinary albumin to creatinine ratio(UACR)<30 mg/g]and DKD,diabetic patients with albuminuria(UACR≥30 mg/g).Healthy subjects were the normal control(NC)group.Urinary exosomal miR-145-5p,miR-27a-3p,and miR-29c-3p,were detected using real-time quantitative polymerase chain reaction.The correlation between exosomal miRNAs and the clinical in-dexes was evaluated.The diagnostic values of exosomal miR-145-5p and miR-27a-3p in DKD were determined using receiver operating characteristic(ROC)analysis.Biological functions of miR-145-5p were investigated by performing RESULTS Urinary exosomal expression of miR-145-5p and miR-27a-3p was more upregulated in the DKD group than in the DM group(miR-145-5p:4.54±1.45 vs 1.95±0.93,P<0.001;miR-27a-3p:2.33±0.79 vs 1.71±0.76,P<0.05)and the NC group(miR-145-5p:4.54±1.45 vs 1.55±0.83,P<0.001;miR-27a-3p:2.33±0.79 vs 1.10±0.51,P<0.001).The exosomal miR-145-5p and miR-27a-3p positively correlated with albuminuria and serum creatinine and negatively correlated with the estimated glomerular filtration rate.miR-27a-3p was also closely related to blood glucose,gly-cosylated hemoglobin A1c,and low-density lipoprotein cholesterol.ROC analysis revealed that miR-145-5p had a better area under the curve of 0.88[95%confidence interval(CI):0.784-0.985,P<0.0001]in diagnosing DKD than miR-27a-3p with 0.71(95%CI:0.547-0.871,P=0.0239).Bioinformatics analysis revealed that the target genes of miR-145-5p were located in the actin filament,cytoskeleton,and extracellular exosome and were involved in the pathological processes of DKD,including apoptosis,inflammation,and fibrosis.CONCLUSION Urinary exosomal miR-145-5p and miR-27a-3p may serve as novel noninvasive diagnostic biomarkers or promising therapeutic targets for DKD.展开更多
Objective To preliminarily explore the effects of human microRNA-181a on migration of gastric cancer cells and its mechanism.Methods The expression of miRNA-181a-5p in gastric cancer cell line GC9811 and peritoneal hi...Objective To preliminarily explore the effects of human microRNA-181a on migration of gastric cancer cells and its mechanism.Methods The expression of miRNA-181a-5p in gastric cancer cell line GC9811 and peritoneal high metastasis gastric cancer cell line GC9811-P were tested by quantitative real-time polymerase chain reaction(qRT-PCR).GC9811 cell line was展开更多
文摘目的通过检测口腔癌皮下移植瘤小鼠小肠中代谢物和代谢通路的变化,分析过表达miR-181a-5p对皮下移植瘤小鼠小肠中代谢物和代谢物组的影响。方法实验分为3组,空白对照(Control)组、阴性对照(negative control,NC)组以及实验(over expression of miR-181a-5p,OE)组。将不同组别处理后的细胞混悬液,通过皮下注射到M-NSG重度免疫缺陷雌性小鼠右侧腹股沟中上部,构建成口腔癌皮下移植瘤小鼠模型。按时记录小鼠体重变化,对小鼠小肠组织进行HE染色,观察各组病理变化。采用超高效液相色谱-串联飞行时间质谱联用仪和串联Orbitrap质谱联用仪检测NC组、OE组和Control组小鼠小肠中的代谢物,使用XCMS预分析原始数据,质量评价样本数据,鉴定Control组与NC组、NC组与OE组的差异代谢物,进行KEGG富集分析获取差异代谢通路。结果Control组和NC组小肠组织中共鉴定出170种差异代谢物。代谢物富集的显著性信号通路包括胆碱代谢、丙氨酸、天冬氨酸和谷氨酸代谢、γ-氨基丁酸(GABA)神经突触代谢、甘油磷脂代谢、环磷酸腺苷(cAMP)信号通路代谢、癌症中心碳代谢以及烟酸和烟碱胺代谢通路。NC组和OE组相比,小鼠小肠中检测到VIP(variable importance in the projection)>2的差异代谢物有16种,显著性差异代谢物包括甘油磷酰胆碱、棕榈酸、3-羟基丁酰肉碱、β-羟丁酸等。代谢物富集到的显著性差异通路为胆碱代谢通路。结论口腔癌皮下移植瘤可引起小鼠小肠的代谢物发生变化,主要改变了小肠中与能量代谢相关的代谢物。过表达miR-181a-5p影响口腔癌皮下移植瘤小鼠小肠代谢物,代谢物富集通路为胆碱代谢通路。
基金Supported by the Nature Science Foundation of Hebei Province,No.H2023104011.
文摘BACKGROUND Diabetic kidney disease(DKD),characterized by increased urinary microalbumin levels and decreased renal function,is the primary cause of end-stage renal di-sease.Its pathological mechanisms are complicated and multifactorial;Therefore,sensitive and specific biomarkers are needed.Urinary exosome originate from diverse renal cells in nephron segments and partially mirror the pathological changes in the kidney.The microRNAs(miRNAs)in urinary exosome are remark-ably stable and highly tissue-specific for the kidney.METHODS Type 2 diabetic mellitus(T2DM)patients were recruited from the Second Hospital of Hebei Medical University and were divided into two groups:DM,diabetic pa-tients without albuminuria[urinary albumin to creatinine ratio(UACR)<30 mg/g]and DKD,diabetic patients with albuminuria(UACR≥30 mg/g).Healthy subjects were the normal control(NC)group.Urinary exosomal miR-145-5p,miR-27a-3p,and miR-29c-3p,were detected using real-time quantitative polymerase chain reaction.The correlation between exosomal miRNAs and the clinical in-dexes was evaluated.The diagnostic values of exosomal miR-145-5p and miR-27a-3p in DKD were determined using receiver operating characteristic(ROC)analysis.Biological functions of miR-145-5p were investigated by performing RESULTS Urinary exosomal expression of miR-145-5p and miR-27a-3p was more upregulated in the DKD group than in the DM group(miR-145-5p:4.54±1.45 vs 1.95±0.93,P<0.001;miR-27a-3p:2.33±0.79 vs 1.71±0.76,P<0.05)and the NC group(miR-145-5p:4.54±1.45 vs 1.55±0.83,P<0.001;miR-27a-3p:2.33±0.79 vs 1.10±0.51,P<0.001).The exosomal miR-145-5p and miR-27a-3p positively correlated with albuminuria and serum creatinine and negatively correlated with the estimated glomerular filtration rate.miR-27a-3p was also closely related to blood glucose,gly-cosylated hemoglobin A1c,and low-density lipoprotein cholesterol.ROC analysis revealed that miR-145-5p had a better area under the curve of 0.88[95%confidence interval(CI):0.784-0.985,P<0.0001]in diagnosing DKD than miR-27a-3p with 0.71(95%CI:0.547-0.871,P=0.0239).Bioinformatics analysis revealed that the target genes of miR-145-5p were located in the actin filament,cytoskeleton,and extracellular exosome and were involved in the pathological processes of DKD,including apoptosis,inflammation,and fibrosis.CONCLUSION Urinary exosomal miR-145-5p and miR-27a-3p may serve as novel noninvasive diagnostic biomarkers or promising therapeutic targets for DKD.
文摘Objective To preliminarily explore the effects of human microRNA-181a on migration of gastric cancer cells and its mechanism.Methods The expression of miRNA-181a-5p in gastric cancer cell line GC9811 and peritoneal high metastasis gastric cancer cell line GC9811-P were tested by quantitative real-time polymerase chain reaction(qRT-PCR).GC9811 cell line was
