Background:Oral cancer,a malignancy that is prevalent worldwide,is often diagnosed at an advanced stage.MicroRNAs(miRNAs)in circulating exosomes have emerged as promising cancer biomarkers.The role of miRNA let-7c-5p ...Background:Oral cancer,a malignancy that is prevalent worldwide,is often diagnosed at an advanced stage.MicroRNAs(miRNAs)in circulating exosomes have emerged as promising cancer biomarkers.The role of miRNA let-7c-5p in oral cancer remains underexplored,and its potential involvement in tumorigenesis warrants comprehensive investigation.Methods:Serum samples from 30 patients with oral cancer and 20 healthy controls were used to isolate exosomes and quantify their RNA content.Isolation of the exosomes was confirmed through transmission electron microscopy.Quantitative PCR was used to assess the miRNA profiles.The effects of let-7c-5p and TAGLN overexpression on oral cancer cell viability,migration,and invasion were analyzed via CCK-8 and Transwell assays.Moreover,we conducted mRNA sequencing of exosomal RNA from exosomes overexpressing let-7c-5p to delineate the gene expression profile and identify potential let-7c-5p target genes.Results:let-7c-5p was upregulated in serumderived exosomes of patients with oral cancer.Overexpression of let-7c-5p in the TCA8113 and CAL-27 cell lines enhanced their proliferative,migratory,and invasive capacities,and overexpression of let-7c-5p cell-derived exosomes promoted oral cancer cell invasiveness.Exosomal mRNA sequencing revealed 2,551 differentially expressed genes between control cell-derived exosomes and overexpressed let-7c-5p cell-derived exosomes.We further identified TAGLN as a direct target of let-7c-5p,which has been implicated in modulating the oncogenic potential of oral cancer cells.Overexpression of TAGLN reverses the promoting role of let-7c-5p on oral cancer cells.Conclusion:Our findings highlight the role of exosomal let-7c-5p in enhancing oral cancer cell aggressiveness by downregulating TAGLN expression,highlighting its potential as a diagnostic and therapeutic strategy.展开更多
目的:探讨血清miR-182-5p表达对脓毒症患儿继发急性肾损伤(AKI)的早期预测价值。方法:选取2016年1月~2019年6月海南省第三人民医院收治的脓毒症患儿196例,分为继发AKI组(AKI组,n=72)和未继发AKI组(非AKI组,n=124),检测两组血清miR-182-5...目的:探讨血清miR-182-5p表达对脓毒症患儿继发急性肾损伤(AKI)的早期预测价值。方法:选取2016年1月~2019年6月海南省第三人民医院收治的脓毒症患儿196例,分为继发AKI组(AKI组,n=72)和未继发AKI组(非AKI组,n=124),检测两组血清miR-182-5p、血肌酐(Scr)、胱抑素C(Cys-C)及肾损伤分子-1(KIM-1)水平。应用多因素Logistic回归分析脓毒症患儿继发AKI的危险因素。绘制ROC曲线分析血清miR-182-5p、Scr、Cys-C及KIM-1水平对AKI的早期预测价值,Pearson相关分析检测血清miR-182-5p表达水平与Scr、Cys-C及KIM-1的相关性。结果:AKI组血清miR-182-5p(1.46±0.62 vs 0.35±0.08)、Scr(460.28±84.26 vs 90.42±10.35,μmol/L)、Cys-C(1.83±0.57 vs 0.58±0.12,mg/L)及KIM-1(22.90±6.35 vs 4.75±0.62,μg/L)水平明显高于非AKI组(P<0.05)。多因素Logistic回归分析发现血清miR-182-5p(OR=2.903,95%CI:1.870~5.116)、Scr(OR=1.704,95%CI:1.105~2.940)、Cys-C(OR=2.063,95%CI:1.434~3.970)及KIM-1(OR=2.530,95%CI:1.524~4.613)水平升高是脓毒症患儿继发AKI的独立危险因素(P<0.05)。ROC曲线分析显示,血清miR-182-5p、Scr、Cys-C及KIM-1水平四项联合预测脓毒症患儿继发AKI的曲线下面积(0.956,95%CI:0.903~0.997)最大,其敏感度和特异度较高,为96.4%和90.8%。Pearson相关分析显示,AKI组血清miR-182-5p表达水平与Scr、Cys-C及KIM-1均呈正相关(r=0.683、r=0.795、r=0.847,P<0.01)。结论:血清miR-182-5p表达水平在脓毒症患儿继发AKI中明显升高,是脓毒症患儿继发AKI的独立危险因素,联合Scr、Cys-C及KIM-1水平对预测AKI具有较高的价值。展开更多
文摘Background:Oral cancer,a malignancy that is prevalent worldwide,is often diagnosed at an advanced stage.MicroRNAs(miRNAs)in circulating exosomes have emerged as promising cancer biomarkers.The role of miRNA let-7c-5p in oral cancer remains underexplored,and its potential involvement in tumorigenesis warrants comprehensive investigation.Methods:Serum samples from 30 patients with oral cancer and 20 healthy controls were used to isolate exosomes and quantify their RNA content.Isolation of the exosomes was confirmed through transmission electron microscopy.Quantitative PCR was used to assess the miRNA profiles.The effects of let-7c-5p and TAGLN overexpression on oral cancer cell viability,migration,and invasion were analyzed via CCK-8 and Transwell assays.Moreover,we conducted mRNA sequencing of exosomal RNA from exosomes overexpressing let-7c-5p to delineate the gene expression profile and identify potential let-7c-5p target genes.Results:let-7c-5p was upregulated in serumderived exosomes of patients with oral cancer.Overexpression of let-7c-5p in the TCA8113 and CAL-27 cell lines enhanced their proliferative,migratory,and invasive capacities,and overexpression of let-7c-5p cell-derived exosomes promoted oral cancer cell invasiveness.Exosomal mRNA sequencing revealed 2,551 differentially expressed genes between control cell-derived exosomes and overexpressed let-7c-5p cell-derived exosomes.We further identified TAGLN as a direct target of let-7c-5p,which has been implicated in modulating the oncogenic potential of oral cancer cells.Overexpression of TAGLN reverses the promoting role of let-7c-5p on oral cancer cells.Conclusion:Our findings highlight the role of exosomal let-7c-5p in enhancing oral cancer cell aggressiveness by downregulating TAGLN expression,highlighting its potential as a diagnostic and therapeutic strategy.
文摘目的:探讨血清miR-182-5p表达对脓毒症患儿继发急性肾损伤(AKI)的早期预测价值。方法:选取2016年1月~2019年6月海南省第三人民医院收治的脓毒症患儿196例,分为继发AKI组(AKI组,n=72)和未继发AKI组(非AKI组,n=124),检测两组血清miR-182-5p、血肌酐(Scr)、胱抑素C(Cys-C)及肾损伤分子-1(KIM-1)水平。应用多因素Logistic回归分析脓毒症患儿继发AKI的危险因素。绘制ROC曲线分析血清miR-182-5p、Scr、Cys-C及KIM-1水平对AKI的早期预测价值,Pearson相关分析检测血清miR-182-5p表达水平与Scr、Cys-C及KIM-1的相关性。结果:AKI组血清miR-182-5p(1.46±0.62 vs 0.35±0.08)、Scr(460.28±84.26 vs 90.42±10.35,μmol/L)、Cys-C(1.83±0.57 vs 0.58±0.12,mg/L)及KIM-1(22.90±6.35 vs 4.75±0.62,μg/L)水平明显高于非AKI组(P<0.05)。多因素Logistic回归分析发现血清miR-182-5p(OR=2.903,95%CI:1.870~5.116)、Scr(OR=1.704,95%CI:1.105~2.940)、Cys-C(OR=2.063,95%CI:1.434~3.970)及KIM-1(OR=2.530,95%CI:1.524~4.613)水平升高是脓毒症患儿继发AKI的独立危险因素(P<0.05)。ROC曲线分析显示,血清miR-182-5p、Scr、Cys-C及KIM-1水平四项联合预测脓毒症患儿继发AKI的曲线下面积(0.956,95%CI:0.903~0.997)最大,其敏感度和特异度较高,为96.4%和90.8%。Pearson相关分析显示,AKI组血清miR-182-5p表达水平与Scr、Cys-C及KIM-1均呈正相关(r=0.683、r=0.795、r=0.847,P<0.01)。结论:血清miR-182-5p表达水平在脓毒症患儿继发AKI中明显升高,是脓毒症患儿继发AKI的独立危险因素,联合Scr、Cys-C及KIM-1水平对预测AKI具有较高的价值。
