Nasopharyngeal carcinoma(NPC)is a common malignant carcinoma of the head and neck,and the biological mechanisms underlying the pathogenesis of NPC remain not fully understood.In the present study,we systematically ana...Nasopharyngeal carcinoma(NPC)is a common malignant carcinoma of the head and neck,and the biological mechanisms underlying the pathogenesis of NPC remain not fully understood.In the present study,we systematically analyzed four independent NPC transcriptomic datasets and focused on identifying the critical molecular networks and novel key hub genes implicated in NPC.We found totally 170 common overlapping differentially expressed genes(DEGs)in the four NPC datasets.GO and KEGG pathway analysis revealed that cell cycle dysregulation is a critical event in NPC.Protein-protein interaction(PPl)network analysis identified a 15 hub-gene corenetwork with overexpressedkinesin family member2C(KIF2C)as a central regulator.Loss-of-function study demonstrated that knockdown of KiF2C significantly inhibited cell growth and cell motility,and delayed cell cycle progression,accompanied with dramatic mitotic defects in spindle formation in NPC cells.RNA-seq analysis revealed that KIF2c knockdown led to deregulation of various downstream genes.KiF2C could also regulate the AKT/mTOR pathways,and enhance paclitaxel sensitivity in NPC cells.Taken together,our results suggest that cell cycle dysregulation is a critical event during NPC pathogenesis and KIF2C is a novel key mitotic hub gene with therapeutic potential in NPC.展开更多
目的通过基因表达汇编公共数据库,探讨驱动蛋白家族成员2C(kinesin family member 2C,KIF2C)在膀胱癌患者中的表达,探索其表达与临床病理特征的联系,评价KIF2C对膀胱癌术后患者预后评估的意义。方法检索并下载美国国立生物技术信息中心...目的通过基因表达汇编公共数据库,探讨驱动蛋白家族成员2C(kinesin family member 2C,KIF2C)在膀胱癌患者中的表达,探索其表达与临床病理特征的联系,评价KIF2C对膀胱癌术后患者预后评估的意义。方法检索并下载美国国立生物技术信息中心的肿瘤公共数据集,对表达谱资料和临床信息进行分析,利用基因集富集分析受KIF2C调控的相关基因集。结果 KIF2C在膀胱癌组织中的表达水平高于其在正常膀胱组织中的表达(P<0.000 1)。膀胱癌患者疾病进展、T分期、N分期和肿瘤分级,KIF2C的高、低表达组之间均有显著性差异(P<0. 05)。KIF2C高表达患者的肿瘤特异性生存期及总生存期显著低于低表达患者(P<0. 05)。KIF2C高表达样本富集了与核糖体蛋白质、多梳蛋白、内源性核糖核酸酶、E2F转录因子、抑癌基因RB有关的基因集。结论 KIF2C与膀胱癌的多个病理指标相关,有作为判断膀胱癌患者预后的标志物和治疗肿瘤的靶标的潜力。展开更多
Hepatocellular carcinoma(HCC)is the most common primary liver malignancy and is the fourth-leading cause of cancer-related deaths worldwide.HCC is refractory to many standard cancer treatments and the prognosis is oft...Hepatocellular carcinoma(HCC)is the most common primary liver malignancy and is the fourth-leading cause of cancer-related deaths worldwide.HCC is refractory to many standard cancer treatments and the prognosis is often poor,highlighting a pressing need to identify biomarkers of aggressiveness and potential targets for future treatments.Kinesin family member 2C(KIF2C)is reported to be highly expressed in several human tumors.Nevertheless,the molecular mechanisms underlying the role of KIF2C in tumor development and progression have not been investigated.In this study,we found that KIF2C expression was significantly upregulated in HCC,and that KIF2C up-regulation was associated with a poor prognosis.Utilizing both gain and loss of function assays,we showed that KIF2C promoted HCC cell proliferation,migration,invasion,and metastasis both in vitro and in vivo.Mechanistically,we identified TBC1D7 as a binding partner of KIF2C,and this interaction disrupts the formation of the TSC complex,resulting in the enhancement of mammalian target of rapamycin complexl(mTORCI)signal transduction.Additionally,we found that KIF2C is a direct target of the Wnt/β-catenin pathway,and acts as a key factor in mediating the crosstalk between Wnt/β-catenin and mTORCI signaling.Thus,the results of our study establish a link between Wnt/β-catenin and mTORCI signaling,which highlights the potential of KIF2C as a therapeutic target for the treatment of HCC.展开更多
目的探讨驱动蛋白家族成员2C(kinesin family proteins 2C,KIF2C)与卵巢癌化学药物治疗(以下简称化疗)耐药的相关性。方法选取2010年1月至2020年12月于首都医科大学附属北京同仁医院接受手术治疗的上皮性卵巢癌患者151例。其中铂类化疗...目的探讨驱动蛋白家族成员2C(kinesin family proteins 2C,KIF2C)与卵巢癌化学药物治疗(以下简称化疗)耐药的相关性。方法选取2010年1月至2020年12月于首都医科大学附属北京同仁医院接受手术治疗的上皮性卵巢癌患者151例。其中铂类化疗敏感患者98例,铂类化疗耐药患者53例。利用免疫组化染色法检测KIF2C在化疗敏感及化疗耐药卵巢癌组织中的表达情况。结果卵巢癌化疗耐药组织中KIF2C明显低表达。KIF2C及病理分期ⅢC期是影响卵巢癌化疗耐药的危险因素。结论KIF2C有可能成为预测卵巢癌患者化疗敏感性的指标,并可能成为治疗化疗耐药卵巢癌患者的新型治疗靶点。展开更多
基金funded by the National Natural Science Foundation of China(No.81902824)The First Affiliated Hospital of Chongqing Medical University,Chongqing,China.
文摘Nasopharyngeal carcinoma(NPC)is a common malignant carcinoma of the head and neck,and the biological mechanisms underlying the pathogenesis of NPC remain not fully understood.In the present study,we systematically analyzed four independent NPC transcriptomic datasets and focused on identifying the critical molecular networks and novel key hub genes implicated in NPC.We found totally 170 common overlapping differentially expressed genes(DEGs)in the four NPC datasets.GO and KEGG pathway analysis revealed that cell cycle dysregulation is a critical event in NPC.Protein-protein interaction(PPl)network analysis identified a 15 hub-gene corenetwork with overexpressedkinesin family member2C(KIF2C)as a central regulator.Loss-of-function study demonstrated that knockdown of KiF2C significantly inhibited cell growth and cell motility,and delayed cell cycle progression,accompanied with dramatic mitotic defects in spindle formation in NPC cells.RNA-seq analysis revealed that KIF2c knockdown led to deregulation of various downstream genes.KiF2C could also regulate the AKT/mTOR pathways,and enhance paclitaxel sensitivity in NPC cells.Taken together,our results suggest that cell cycle dysregulation is a critical event during NPC pathogenesis and KIF2C is a novel key mitotic hub gene with therapeutic potential in NPC.
文摘目的通过基因表达汇编公共数据库,探讨驱动蛋白家族成员2C(kinesin family member 2C,KIF2C)在膀胱癌患者中的表达,探索其表达与临床病理特征的联系,评价KIF2C对膀胱癌术后患者预后评估的意义。方法检索并下载美国国立生物技术信息中心的肿瘤公共数据集,对表达谱资料和临床信息进行分析,利用基因集富集分析受KIF2C调控的相关基因集。结果 KIF2C在膀胱癌组织中的表达水平高于其在正常膀胱组织中的表达(P<0.000 1)。膀胱癌患者疾病进展、T分期、N分期和肿瘤分级,KIF2C的高、低表达组之间均有显著性差异(P<0. 05)。KIF2C高表达患者的肿瘤特异性生存期及总生存期显著低于低表达患者(P<0. 05)。KIF2C高表达样本富集了与核糖体蛋白质、多梳蛋白、内源性核糖核酸酶、E2F转录因子、抑癌基因RB有关的基因集。结论 KIF2C与膀胱癌的多个病理指标相关,有作为判断膀胱癌患者预后的标志物和治疗肿瘤的靶标的潜力。
基金This work was supported by the grants of the National Key R&D Program of China(2017YFC1309001)Guangzhou Science and Technology Plan Projects(Health Medical Collaborative Innovation Program of Guangzhou,201803040019)+3 种基金National Natural Science Foundation of China(81730072,81672407 and 81872001,81902411)Guangdong Natural Science Funds for Distinguished Young Scholar(No.2015A030306001)National Postdoctoral Program for Innovative Talents(BX201700299)China Postdoctoral Science Foundation(2018M643342).
文摘Hepatocellular carcinoma(HCC)is the most common primary liver malignancy and is the fourth-leading cause of cancer-related deaths worldwide.HCC is refractory to many standard cancer treatments and the prognosis is often poor,highlighting a pressing need to identify biomarkers of aggressiveness and potential targets for future treatments.Kinesin family member 2C(KIF2C)is reported to be highly expressed in several human tumors.Nevertheless,the molecular mechanisms underlying the role of KIF2C in tumor development and progression have not been investigated.In this study,we found that KIF2C expression was significantly upregulated in HCC,and that KIF2C up-regulation was associated with a poor prognosis.Utilizing both gain and loss of function assays,we showed that KIF2C promoted HCC cell proliferation,migration,invasion,and metastasis both in vitro and in vivo.Mechanistically,we identified TBC1D7 as a binding partner of KIF2C,and this interaction disrupts the formation of the TSC complex,resulting in the enhancement of mammalian target of rapamycin complexl(mTORCI)signal transduction.Additionally,we found that KIF2C is a direct target of the Wnt/β-catenin pathway,and acts as a key factor in mediating the crosstalk between Wnt/β-catenin and mTORCI signaling.Thus,the results of our study establish a link between Wnt/β-catenin and mTORCI signaling,which highlights the potential of KIF2C as a therapeutic target for the treatment of HCC.
文摘目的探讨驱动蛋白家族成员2C(kinesin family proteins 2C,KIF2C)与卵巢癌化学药物治疗(以下简称化疗)耐药的相关性。方法选取2010年1月至2020年12月于首都医科大学附属北京同仁医院接受手术治疗的上皮性卵巢癌患者151例。其中铂类化疗敏感患者98例,铂类化疗耐药患者53例。利用免疫组化染色法检测KIF2C在化疗敏感及化疗耐药卵巢癌组织中的表达情况。结果卵巢癌化疗耐药组织中KIF2C明显低表达。KIF2C及病理分期ⅢC期是影响卵巢癌化疗耐药的危险因素。结论KIF2C有可能成为预测卵巢癌患者化疗敏感性的指标,并可能成为治疗化疗耐药卵巢癌患者的新型治疗靶点。
