目的探讨癌组织微小RNA-218(miR-218)联合组蛋白伴侣抗沉默功能蛋白1B(ASF1B)预测前列腺癌根治术后患者复发的价值。方法前瞻性选取2021年1月至2023年5月新乡医学院第一附属医院收治的252例前列腺癌患者作为研究对象,所有患者均实施前...目的探讨癌组织微小RNA-218(miR-218)联合组蛋白伴侣抗沉默功能蛋白1B(ASF1B)预测前列腺癌根治术后患者复发的价值。方法前瞻性选取2021年1月至2023年5月新乡医学院第一附属医院收治的252例前列腺癌患者作为研究对象,所有患者均实施前列腺癌根治术,术后接受为期1年的随访,根据术后1年复发情况分为复发组50例和未复发组202例。比较癌组织、癌旁组织及两组患者癌组织miR-218、ASF1B m RNA表达水平。采用多因素Logistic回归分析癌组织miR-218、ASF1B m RNA对术后复发风险的影响;采用受试者工作特征(ROC)曲线分析癌组织miR-218、ASF1B m RNA表达水平联合预测术后复发风险的价值。结果癌组织miR-218表达水平为0.47±0.13,明显低于癌旁组织的0.86±0.21,而癌组织ASF1B mRNA表达水平为1.54±0.49,明显高于癌旁组织的1.05±0.18,差异均有统计学意义(P<0.05);复发组患者癌组织的miR-218表达水平为0.25±0.08,明显低于未复发组的0.52±0.17,而ASF1B m RNA表达水平为2.03±0.66,明显高于未复发组的1.42±0.46,差异均有统计学意义(P<0.05);经多因素Logistic回归分析结果显示,校正了术后病理分期、术前PSA、术后切缘阳性后,癌组织miR-218、ASF1B mRNA仍是术后复发的独立相关影响因素(P<0.05);经ROC分析结果显示,癌组织miR-218、ASF1B m RNA及联合检测预测术后复发的ROC曲线下面积(AUC)为0.803、0.824、0.936,联合检测的AUC大于miR-218、ASF1B mRNA,差异均有统计学意义(P<0.05)。结论癌组织miR-218、ASF1B m RNA表达与前列腺癌根治术后复发风险独立相关,联合检测抑癌因子miR-218和促癌因子ASF1B m RNA能提高对患者术后复发的预测价值,为前列腺癌根治术后分层管理、治疗决策等提供重要的参考依据。展开更多
绵羊繁殖性能在绵羊产业中有着重要意义,除通过一些技术手段(如同期发情、人工授精、超数排卵等)之外,在目前已知的关于能够提高绵羊繁殖力的16个基因共20个突变体当中,以骨形态发生蛋白受体-1B(bone morphogenetic protein receptor ty...绵羊繁殖性能在绵羊产业中有着重要意义,除通过一些技术手段(如同期发情、人工授精、超数排卵等)之外,在目前已知的关于能够提高绵羊繁殖力的16个基因共20个突变体当中,以骨形态发生蛋白受体-1B(bone morphogenetic protein receptor type-1B,BMPR-1B)基因对绵羊繁殖力的影响最大。BMPR-1B基因是世界上第一个被发现的多羔主效基因,其编码区的A746G突变导致蛋白质序列中第249位的谷氨酰胺被置换为精氨酸(Q249R),最终能够引起绵羊排卵数和产羔数增加。作者介绍了绵羊多羔主效基因BMPR-1B及其突变体FecB(A746G)的发现与结构,简述了该基因分子方面的作用机理,对BMP/Smad信号通路的调控以及与绵羊繁殖之间的联系,并简单分析了FecB突变后对绵羊卵巢、卵泡等组织细胞功能,激素调节和相关基因表达的影响。进一步加深对BMPR-1B基因的了解,为研究人员探明该基因诱使绵羊等动物提高产羔数的调控机制,相关配体、调控因子和上下游信号蛋白的影响以及加快哺乳动物高效育种繁殖、扩大种群规模和多胎品系的建立,增加养殖人员的经济收入等提供一些参考和帮助。展开更多
Accumulating evidence suggests that oxidative stress and the Wnt/β-catenin pathway participate in stroke-induced disruption of the blood-brain barrier.However,the potential links between them following ischemic strok...Accumulating evidence suggests that oxidative stress and the Wnt/β-catenin pathway participate in stroke-induced disruption of the blood-brain barrier.However,the potential links between them following ischemic stroke remain largely unknown.The present study found that cerebral ischemia leads to oxidative stress and repression of the Wnt/β-catenin pathway.Meanwhile,Wnt/β-catenin pathway activation by the pharmacological inhibito r,TWS119,relieved oxidative stress,increased the levels of cytochrome P4501B1(CYP1B1)and tight junction-associated proteins(zonula occludens-1[ZO-1],occludin and claudin-5),as well as brain microvascular density in cerebral ischemia rats.Moreove r,rat brain microvascular endothelial cells that underwent oxygen glucose deprivation/reoxygenation displayed intense oxidative stress,suppression of the Wnt/β-catenin pathway,aggravated cell apoptosis,downregulated CYP1B1and tight junction protein levels,and inhibited cell prolife ration and migration.Overexpression ofβ-catenin or knockdown ofβ-catenin and CYP1B1 genes in rat brain mic rovascular endothelial cells at least partly ameliorated or exacerbated these effects,respectively.In addition,small interfering RNA-mediatedβ-catenin silencing decreased CYP1B1 expression,whereas CYP1B1 knoc kdown did not change the levels of glycogen synthase kinase 3β,Wnt-3a,andβ-catenin proteins in rat brain microvascular endothelial cells after oxygen glucose deprivatio n/reoxygenation.Thus,the data suggest that CYP1B1 can be regulated by Wnt/β-catenin signaling,and activation of the Wnt/β-catenin/CYP1B1 pathway contributes to alleviation of oxidative stress,increased tight junction levels,and protection of the blood-brain barrier against ischemia/hypoxia-induced injury.展开更多
文摘目的探讨癌组织微小RNA-218(miR-218)联合组蛋白伴侣抗沉默功能蛋白1B(ASF1B)预测前列腺癌根治术后患者复发的价值。方法前瞻性选取2021年1月至2023年5月新乡医学院第一附属医院收治的252例前列腺癌患者作为研究对象,所有患者均实施前列腺癌根治术,术后接受为期1年的随访,根据术后1年复发情况分为复发组50例和未复发组202例。比较癌组织、癌旁组织及两组患者癌组织miR-218、ASF1B m RNA表达水平。采用多因素Logistic回归分析癌组织miR-218、ASF1B m RNA对术后复发风险的影响;采用受试者工作特征(ROC)曲线分析癌组织miR-218、ASF1B m RNA表达水平联合预测术后复发风险的价值。结果癌组织miR-218表达水平为0.47±0.13,明显低于癌旁组织的0.86±0.21,而癌组织ASF1B mRNA表达水平为1.54±0.49,明显高于癌旁组织的1.05±0.18,差异均有统计学意义(P<0.05);复发组患者癌组织的miR-218表达水平为0.25±0.08,明显低于未复发组的0.52±0.17,而ASF1B m RNA表达水平为2.03±0.66,明显高于未复发组的1.42±0.46,差异均有统计学意义(P<0.05);经多因素Logistic回归分析结果显示,校正了术后病理分期、术前PSA、术后切缘阳性后,癌组织miR-218、ASF1B mRNA仍是术后复发的独立相关影响因素(P<0.05);经ROC分析结果显示,癌组织miR-218、ASF1B m RNA及联合检测预测术后复发的ROC曲线下面积(AUC)为0.803、0.824、0.936,联合检测的AUC大于miR-218、ASF1B mRNA,差异均有统计学意义(P<0.05)。结论癌组织miR-218、ASF1B m RNA表达与前列腺癌根治术后复发风险独立相关,联合检测抑癌因子miR-218和促癌因子ASF1B m RNA能提高对患者术后复发的预测价值,为前列腺癌根治术后分层管理、治疗决策等提供重要的参考依据。
文摘绵羊繁殖性能在绵羊产业中有着重要意义,除通过一些技术手段(如同期发情、人工授精、超数排卵等)之外,在目前已知的关于能够提高绵羊繁殖力的16个基因共20个突变体当中,以骨形态发生蛋白受体-1B(bone morphogenetic protein receptor type-1B,BMPR-1B)基因对绵羊繁殖力的影响最大。BMPR-1B基因是世界上第一个被发现的多羔主效基因,其编码区的A746G突变导致蛋白质序列中第249位的谷氨酰胺被置换为精氨酸(Q249R),最终能够引起绵羊排卵数和产羔数增加。作者介绍了绵羊多羔主效基因BMPR-1B及其突变体FecB(A746G)的发现与结构,简述了该基因分子方面的作用机理,对BMP/Smad信号通路的调控以及与绵羊繁殖之间的联系,并简单分析了FecB突变后对绵羊卵巢、卵泡等组织细胞功能,激素调节和相关基因表达的影响。进一步加深对BMPR-1B基因的了解,为研究人员探明该基因诱使绵羊等动物提高产羔数的调控机制,相关配体、调控因子和上下游信号蛋白的影响以及加快哺乳动物高效育种繁殖、扩大种群规模和多胎品系的建立,增加养殖人员的经济收入等提供一些参考和帮助。
基金supported by the National Natural Science Foundation of China,No.81771250(to XC)the Natural Science Foundation of Fujian Province,Nos.2020J011059(to XC),2020R1011004(to YW),2021J01374(to XZ)+1 种基金Medical Innovation Project of Fujian Province,No.2021 CXB002(to XC)Fujian Research and Training Grants for Young and Middle-aged Leaders in Healthcare(to XC)。
文摘Accumulating evidence suggests that oxidative stress and the Wnt/β-catenin pathway participate in stroke-induced disruption of the blood-brain barrier.However,the potential links between them following ischemic stroke remain largely unknown.The present study found that cerebral ischemia leads to oxidative stress and repression of the Wnt/β-catenin pathway.Meanwhile,Wnt/β-catenin pathway activation by the pharmacological inhibito r,TWS119,relieved oxidative stress,increased the levels of cytochrome P4501B1(CYP1B1)and tight junction-associated proteins(zonula occludens-1[ZO-1],occludin and claudin-5),as well as brain microvascular density in cerebral ischemia rats.Moreove r,rat brain microvascular endothelial cells that underwent oxygen glucose deprivation/reoxygenation displayed intense oxidative stress,suppression of the Wnt/β-catenin pathway,aggravated cell apoptosis,downregulated CYP1B1and tight junction protein levels,and inhibited cell prolife ration and migration.Overexpression ofβ-catenin or knockdown ofβ-catenin and CYP1B1 genes in rat brain mic rovascular endothelial cells at least partly ameliorated or exacerbated these effects,respectively.In addition,small interfering RNA-mediatedβ-catenin silencing decreased CYP1B1 expression,whereas CYP1B1 knoc kdown did not change the levels of glycogen synthase kinase 3β,Wnt-3a,andβ-catenin proteins in rat brain microvascular endothelial cells after oxygen glucose deprivatio n/reoxygenation.Thus,the data suggest that CYP1B1 can be regulated by Wnt/β-catenin signaling,and activation of the Wnt/β-catenin/CYP1B1 pathway contributes to alleviation of oxidative stress,increased tight junction levels,and protection of the blood-brain barrier against ischemia/hypoxia-induced injury.
