目的 探析Xα1型胶原蛋白(collagen type X alpha 1,COL10A1)、微小RNA(microRNA,miRNA)-21、miRNA-320c表达水平对胃癌腹膜转移及预后的预测效能。方法 回顾性分析内蒙古医科大学附属肿瘤医院2023年7月至2024年9月收治的120例胃癌患者...目的 探析Xα1型胶原蛋白(collagen type X alpha 1,COL10A1)、微小RNA(microRNA,miRNA)-21、miRNA-320c表达水平对胃癌腹膜转移及预后的预测效能。方法 回顾性分析内蒙古医科大学附属肿瘤医院2023年7月至2024年9月收治的120例胃癌患者的临床资料。治疗后采用门诊及电话随访形式随访患者预后结局,并根据是否发生腹膜转移分为腹膜转移组和无腹膜转移组;根据预后结局分为不良组和良好组。采用酶联免疫法检测COL10A1;采用qRT-PCR检测miRNA-21、miRNA-320c。对比腹膜转移组、无腹膜转移组临床特征、血清COL10A1、miRNA-21、miRNA-320c;对比不同预后胃癌患者血清COL10A1、miRNA-21、miRNA-320c表达水平;采用Cox单因素及多因素对胃癌预后影响因素进行逐步回归分析;采用ROC分析血清COL10A1、miRNA-21、miRNA-320c对胃癌预后的预测效能。结果 120例胃癌患者中,腹膜转移31例,无腹膜转移89例。腹膜转移组TNM分期高于无腹膜转移组(P<0.05)。腹膜转移组血清COL10A1、miRNA-21、miRNA-320c均高于无腹膜转移组(P<0.05)。120例胃癌患者中,不良组42例,良好组78例。不良组血清COL10A1、miRNA-21、miRNA-320c均高于良好组(P<0.05)。Cox单因素显示,TNM分期、腹膜转移、淋巴结转移、COL10A1、miRNA-21、miRNA-320c与胃癌患者预后相关(均P<0.05);多因素显示,TNM分期、腹膜转移、COL10A1、miRNA-21、miRNA-320c是影响胃癌患者预后的独立危险因素(均P<0.05)。ROC曲线显示,血清COL10A1、miRNA-21、miRNA-320c联合预测胃癌预后结局的灵敏度及特异度分别为89.45%、92.34%,AUC达0.921,高于COL10A1(P=0.011)、miRNA-21(P=0.023)及miRNA-320c(P=0.015)单独诊断。结论 血清COL10A1、miRNA-21、miRNA-320c在胃癌腹膜转移及不良预后患者中呈高表达水平,且上述指标为胃癌患者不良预后危险因素,联合应用对预后结局有着较高预测效能。展开更多
Background Undernutrition disrupts pregnant ewe's metabolic homeostasis and severely inhibits fetal growth and development.In this study,undernourished and nutrition-recovery pregnant sheep models and rumen epithe...Background Undernutrition disrupts pregnant ewe's metabolic homeostasis and severely inhibits fetal growth and development.In this study,undernourished and nutrition-recovery pregnant sheep models and rumen epithelial cells were utilized to investigate the mechanisms behind undernutrition-induced disruptions in male fetal rumen metabolism and development.Results Maternal undernutrition significantly reduced male fetal rumen weight and papilla length,width and surface area.Maternal undernutrition extremely suppressed nutrient metabolism and energy production in male fetal rumen via JAK3/STAT3 signaling to inhibit cell cycle progression and male fetal rumen development,while maternal nutritional recovery partially restored metabolic inhibition but failed to alleviate male fetal rumen development.Meanwhile,64 differentially expressed miRNAs(DEMs)were identified in male fetal rumen between undernourished ewes and controls.Novel miR-736 was overexpressed both in male fetal rumen of undernourished and nutrition-recovery models.E2F transcription factor 2(E2F2)and MYB proto-oncogene like 2(MYBL2)were the intersection of male fetal rumen differentially expressed genes(DEGs)and DEMs target genes integrated analysis and were predicted as novel miR-736 target genes.Further,we confirmed that novel miR-736 targeted and downregulated E2F2 and MYBL2 expression levels.Silencing E2F2 and MYBL2 promoted apoptosis and inhibited S-phase entry in rumen epithelial cells.Conclusions In summary,maternal undernutrition disrupted male fetal rumen metabolism and elevated novel miR-736,which targeted and downregulated E2F2 and MYBL2 to inhibit cell cycle progression and promote apoptosis,finally inhibited male fetal rumen development.This study provides new insights into the epigenetic mechanisms underlying maternal undernutrition-induced male fetal rumen developmental deficits.展开更多
探讨miRNA-21-3p在急性髓系白血病(AML)患者外周血单个核细胞(PBMC)中的表达水平变化,并分析其临床意义。方法:采用qRT-PCR法测定正常对照和AML患者PBMC的miRNA-21-3p表达水平,根据ROC曲线计算miRNA-21-3p临界值(cut-off值)。体外CCK8...探讨miRNA-21-3p在急性髓系白血病(AML)患者外周血单个核细胞(PBMC)中的表达水平变化,并分析其临床意义。方法:采用qRT-PCR法测定正常对照和AML患者PBMC的miRNA-21-3p表达水平,根据ROC曲线计算miRNA-21-3p临界值(cut-off值)。体外CCK8细胞计数法测定白血病细胞的增殖水平。分别比较不同患者组的miRNA-21-3p表达水平,并根据cut-off值分为大于和小于两组,同时分析其临床预后意义。结果:①急性髓系白血病(AML)患者与正常对照组比较,PBMCmiRNA-21-3p平均表达水平高于正常对照组,其临界cut-of值为1.426^(2^-△△Ct)。②不同组白血病患者miRNA-21-3p水平的比较:未复发组AML患者的PBMC O miRNA-21-3p水平明显低于复发组(P=0.0027),完全缓解(CR)组与未缓解(NR)组的PBMCmiR-21-3p水平差别不明显(t=1.254,P=0.2146),MRD(+)组PBMCmiRNA-21-3p水平高于MRD(-)组(P=0.0001)。③大于和小于临界值两组的临床意义分析:PBMCmiRNA-21-3p小于临界值组的无病生存期(DFS)与大于临界值组无明显差异(P=0.2331),大于临界值组的复发率和微小残留病(MRD)阳性率均高于小于临界值组(P<0.0001)。大于临界值组和低于临界值组相比较,完全缓解率无明显差异,但是PBMCmiRNA-21-3p大于临界值组的5年生存率低于小于临界值组(P=0.0109)。④CCK8细胞计数法测定miRNA-21-3pmimics对白血病细胞增殖的影响。结果表明miR-21-3pmimics对U937、THP1和K562细胞的增殖水平并没有明显的直接作用(P>0.05)。结论:PBMCmiRNA-21-3p水平与白血病预后有关,并以大于和小于临界值分组更为敏感。miRNA-21-3p mimics对U937、THP1和K562细胞的增殖水平没有明显的直接作用。展开更多
文摘目的 探析Xα1型胶原蛋白(collagen type X alpha 1,COL10A1)、微小RNA(microRNA,miRNA)-21、miRNA-320c表达水平对胃癌腹膜转移及预后的预测效能。方法 回顾性分析内蒙古医科大学附属肿瘤医院2023年7月至2024年9月收治的120例胃癌患者的临床资料。治疗后采用门诊及电话随访形式随访患者预后结局,并根据是否发生腹膜转移分为腹膜转移组和无腹膜转移组;根据预后结局分为不良组和良好组。采用酶联免疫法检测COL10A1;采用qRT-PCR检测miRNA-21、miRNA-320c。对比腹膜转移组、无腹膜转移组临床特征、血清COL10A1、miRNA-21、miRNA-320c;对比不同预后胃癌患者血清COL10A1、miRNA-21、miRNA-320c表达水平;采用Cox单因素及多因素对胃癌预后影响因素进行逐步回归分析;采用ROC分析血清COL10A1、miRNA-21、miRNA-320c对胃癌预后的预测效能。结果 120例胃癌患者中,腹膜转移31例,无腹膜转移89例。腹膜转移组TNM分期高于无腹膜转移组(P<0.05)。腹膜转移组血清COL10A1、miRNA-21、miRNA-320c均高于无腹膜转移组(P<0.05)。120例胃癌患者中,不良组42例,良好组78例。不良组血清COL10A1、miRNA-21、miRNA-320c均高于良好组(P<0.05)。Cox单因素显示,TNM分期、腹膜转移、淋巴结转移、COL10A1、miRNA-21、miRNA-320c与胃癌患者预后相关(均P<0.05);多因素显示,TNM分期、腹膜转移、COL10A1、miRNA-21、miRNA-320c是影响胃癌患者预后的独立危险因素(均P<0.05)。ROC曲线显示,血清COL10A1、miRNA-21、miRNA-320c联合预测胃癌预后结局的灵敏度及特异度分别为89.45%、92.34%,AUC达0.921,高于COL10A1(P=0.011)、miRNA-21(P=0.023)及miRNA-320c(P=0.015)单独诊断。结论 血清COL10A1、miRNA-21、miRNA-320c在胃癌腹膜转移及不良预后患者中呈高表达水平,且上述指标为胃癌患者不良预后危险因素,联合应用对预后结局有着较高预测效能。
基金supported by the National Natural Science Foundation of China(32402767)National Key Research and Development Program of China(2022YFD1301102)+3 种基金Anhui Province Natural Science Foundation Youth Project(2308085QC104)AAU Introduction of High-level Talent Funds(RC392107)Key Laboratory of Utilization of Livestock and Forage Resources in Circum-Tarim Region(Co-construction by Ministry and Province),Ministry of Agriculture and Rural Affairs(BSGJSYS202502)the China Agriculture Research System(CARS-38)。
文摘Background Undernutrition disrupts pregnant ewe's metabolic homeostasis and severely inhibits fetal growth and development.In this study,undernourished and nutrition-recovery pregnant sheep models and rumen epithelial cells were utilized to investigate the mechanisms behind undernutrition-induced disruptions in male fetal rumen metabolism and development.Results Maternal undernutrition significantly reduced male fetal rumen weight and papilla length,width and surface area.Maternal undernutrition extremely suppressed nutrient metabolism and energy production in male fetal rumen via JAK3/STAT3 signaling to inhibit cell cycle progression and male fetal rumen development,while maternal nutritional recovery partially restored metabolic inhibition but failed to alleviate male fetal rumen development.Meanwhile,64 differentially expressed miRNAs(DEMs)were identified in male fetal rumen between undernourished ewes and controls.Novel miR-736 was overexpressed both in male fetal rumen of undernourished and nutrition-recovery models.E2F transcription factor 2(E2F2)and MYB proto-oncogene like 2(MYBL2)were the intersection of male fetal rumen differentially expressed genes(DEGs)and DEMs target genes integrated analysis and were predicted as novel miR-736 target genes.Further,we confirmed that novel miR-736 targeted and downregulated E2F2 and MYBL2 expression levels.Silencing E2F2 and MYBL2 promoted apoptosis and inhibited S-phase entry in rumen epithelial cells.Conclusions In summary,maternal undernutrition disrupted male fetal rumen metabolism and elevated novel miR-736,which targeted and downregulated E2F2 and MYBL2 to inhibit cell cycle progression and promote apoptosis,finally inhibited male fetal rumen development.This study provides new insights into the epigenetic mechanisms underlying maternal undernutrition-induced male fetal rumen developmental deficits.
文摘探讨miRNA-21-3p在急性髓系白血病(AML)患者外周血单个核细胞(PBMC)中的表达水平变化,并分析其临床意义。方法:采用qRT-PCR法测定正常对照和AML患者PBMC的miRNA-21-3p表达水平,根据ROC曲线计算miRNA-21-3p临界值(cut-off值)。体外CCK8细胞计数法测定白血病细胞的增殖水平。分别比较不同患者组的miRNA-21-3p表达水平,并根据cut-off值分为大于和小于两组,同时分析其临床预后意义。结果:①急性髓系白血病(AML)患者与正常对照组比较,PBMCmiRNA-21-3p平均表达水平高于正常对照组,其临界cut-of值为1.426^(2^-△△Ct)。②不同组白血病患者miRNA-21-3p水平的比较:未复发组AML患者的PBMC O miRNA-21-3p水平明显低于复发组(P=0.0027),完全缓解(CR)组与未缓解(NR)组的PBMCmiR-21-3p水平差别不明显(t=1.254,P=0.2146),MRD(+)组PBMCmiRNA-21-3p水平高于MRD(-)组(P=0.0001)。③大于和小于临界值两组的临床意义分析:PBMCmiRNA-21-3p小于临界值组的无病生存期(DFS)与大于临界值组无明显差异(P=0.2331),大于临界值组的复发率和微小残留病(MRD)阳性率均高于小于临界值组(P<0.0001)。大于临界值组和低于临界值组相比较,完全缓解率无明显差异,但是PBMCmiRNA-21-3p大于临界值组的5年生存率低于小于临界值组(P=0.0109)。④CCK8细胞计数法测定miRNA-21-3pmimics对白血病细胞增殖的影响。结果表明miR-21-3pmimics对U937、THP1和K562细胞的增殖水平并没有明显的直接作用(P>0.05)。结论:PBMCmiRNA-21-3p水平与白血病预后有关,并以大于和小于临界值分组更为敏感。miRNA-21-3p mimics对U937、THP1和K562细胞的增殖水平没有明显的直接作用。
