目的探讨内脂素-烟酰胺磷酸核糖转移酶(Nampt)轴在卵巢上皮癌进展中的作用及对患者预后的影响。方法采用免疫组化方法检测Nampt在卵巢上皮癌及正常卵巢组织内的表达,ELISA方法测定血清内脂素浓度,并分析其与临床病理特征及患者总体生存...目的探讨内脂素-烟酰胺磷酸核糖转移酶(Nampt)轴在卵巢上皮癌进展中的作用及对患者预后的影响。方法采用免疫组化方法检测Nampt在卵巢上皮癌及正常卵巢组织内的表达,ELISA方法测定血清内脂素浓度,并分析其与临床病理特征及患者总体生存期的关系。结果卵巢上皮癌患者血清内脂素浓度显著高于卵巢良性肿瘤患者及正常对照人群,内脂素诊断卵巢上皮癌的曲线下面积(area under curve,AUC)为0.744,界值5.95 ng/mL。卵巢上皮癌患者血清内脂素与T、N、FIGO分期相关(P<0.05)且与CA125呈正相关性(rs=0.389,P=0.001)。Nampt在卵巢上皮癌组织中阳性表达率显著升高,且与FIGO分期、血清内脂素水平相关(P<0.05)。卵巢上皮肿瘤细胞Nampt蛋白表达与患者血清内脂素水平呈正相关性(rs=0.55,P<0.001)。卵巢上皮癌患者1年、3年、5年生存率分别为98.6%、74.3%、34.3%。生存分析显示,卵巢上皮癌患者生存期与T、N、FIGO分期及血清内脂素、肿瘤细胞Nampt表达有关,且FIGO分期、肿瘤细胞Nampt表达是影响患者预后的独立因素(P<0.05)。结论卵巢上皮癌患者血清内脂素、癌组织中Nampt高表达以及T、N、FIGO分期与患者总体生存期有关,且Nampt高表达、FIGO分期是独立影响因素。这提示内脂素-Nampt轴促进卵巢上皮癌进展并影响患者预后。展开更多
Background:Circular RNAs(circ RNAs)are a novel class of endogenous nc RNA,which widely exist in the transcriptomes of different species and tissues.Recent studies indicate important roles for circ RNAs in the regulati...Background:Circular RNAs(circ RNAs)are a novel class of endogenous nc RNA,which widely exist in the transcriptomes of different species and tissues.Recent studies indicate important roles for circ RNAs in the regulation of gene expression by acting as competing endogenous RNAs(ce RNAs).However,the specific role of circ RNAs in myogenesis is still poorly understood.In this study,we attempted to systematically identify the circ RNAs involved in myogenesis and analyze the biological functions of circ RNAs in chicken skeletal muscle development.Results:In total,532 circ RNAs were identified as being differentially expressed between pectoralis major(PEM)and soleus(SOL)in 7-week-old Xinghua chicken.Among them,a novel circ RNA(novel_circ_002621),generated by PTPN4 gene,was named circ PTPN4 and identified.circ PTPN4 is highly expressed in skeletal muscle,and its expression level is upregulated during myoblast differentiation.circ PTPN4 facilitates the proliferation and differentiation of myoblast.Moreover,circ PTPN4 suppresses mitochondria biogenesis and activates fast-twitch muscle phenotype.Mechanistically,circ PTPN4 can function as a ce RNA to regulate NAMPT expression by sponging mi R-499-3p,thus participating in AMPK signaling.Conclusions:circ PTPN4 functions as a ce RNA to regulate NAMPT expression by sponging mi R-499-3p,thus promoting the proliferation and differentiation of myoblast,as well as activating fast-twitch muscle phenotype.展开更多
文摘目的探讨内脂素-烟酰胺磷酸核糖转移酶(Nampt)轴在卵巢上皮癌进展中的作用及对患者预后的影响。方法采用免疫组化方法检测Nampt在卵巢上皮癌及正常卵巢组织内的表达,ELISA方法测定血清内脂素浓度,并分析其与临床病理特征及患者总体生存期的关系。结果卵巢上皮癌患者血清内脂素浓度显著高于卵巢良性肿瘤患者及正常对照人群,内脂素诊断卵巢上皮癌的曲线下面积(area under curve,AUC)为0.744,界值5.95 ng/mL。卵巢上皮癌患者血清内脂素与T、N、FIGO分期相关(P<0.05)且与CA125呈正相关性(rs=0.389,P=0.001)。Nampt在卵巢上皮癌组织中阳性表达率显著升高,且与FIGO分期、血清内脂素水平相关(P<0.05)。卵巢上皮肿瘤细胞Nampt蛋白表达与患者血清内脂素水平呈正相关性(rs=0.55,P<0.001)。卵巢上皮癌患者1年、3年、5年生存率分别为98.6%、74.3%、34.3%。生存分析显示,卵巢上皮癌患者生存期与T、N、FIGO分期及血清内脂素、肿瘤细胞Nampt表达有关,且FIGO分期、肿瘤细胞Nampt表达是影响患者预后的独立因素(P<0.05)。结论卵巢上皮癌患者血清内脂素、癌组织中Nampt高表达以及T、N、FIGO分期与患者总体生存期有关,且Nampt高表达、FIGO分期是独立影响因素。这提示内脂素-Nampt轴促进卵巢上皮癌进展并影响患者预后。
基金supported by Local Innovative and Research Teams Project of Guangdong Province(2019BT02N630)the Natural Scientific Foundation of China(U1901206 and 31761143014)+1 种基金Guangzhou Science and Technology Key Project(202103000084)China Agriculture Research System(CARS-41-G03)。
文摘Background:Circular RNAs(circ RNAs)are a novel class of endogenous nc RNA,which widely exist in the transcriptomes of different species and tissues.Recent studies indicate important roles for circ RNAs in the regulation of gene expression by acting as competing endogenous RNAs(ce RNAs).However,the specific role of circ RNAs in myogenesis is still poorly understood.In this study,we attempted to systematically identify the circ RNAs involved in myogenesis and analyze the biological functions of circ RNAs in chicken skeletal muscle development.Results:In total,532 circ RNAs were identified as being differentially expressed between pectoralis major(PEM)and soleus(SOL)in 7-week-old Xinghua chicken.Among them,a novel circ RNA(novel_circ_002621),generated by PTPN4 gene,was named circ PTPN4 and identified.circ PTPN4 is highly expressed in skeletal muscle,and its expression level is upregulated during myoblast differentiation.circ PTPN4 facilitates the proliferation and differentiation of myoblast.Moreover,circ PTPN4 suppresses mitochondria biogenesis and activates fast-twitch muscle phenotype.Mechanistically,circ PTPN4 can function as a ce RNA to regulate NAMPT expression by sponging mi R-499-3p,thus participating in AMPK signaling.Conclusions:circ PTPN4 functions as a ce RNA to regulate NAMPT expression by sponging mi R-499-3p,thus promoting the proliferation and differentiation of myoblast,as well as activating fast-twitch muscle phenotype.
