Ska2(spindle and KT associated 2),也称FAM33A(family with sequence similarity 33,member A),是一个最近鉴定的参与细胞周期调控与肿瘤发生发展的新基因。现有研究初步证实,Ska2参与组成Ska复合体,在有丝分裂中期纺锤体检验点关闭...Ska2(spindle and KT associated 2),也称FAM33A(family with sequence similarity 33,member A),是一个最近鉴定的参与细胞周期调控与肿瘤发生发展的新基因。现有研究初步证实,Ska2参与组成Ska复合体,在有丝分裂中期纺锤体检验点关闭中起重要作用;Ska2在小细胞肺癌和乳腺癌中呈现表达上调,可通过糖皮质激素受体等途径参与细胞增殖调节和肿瘤发生发展;NF-κΒ和CREB等转录因子可能参与Ska2的表达调控。Ska2有望成为一个恶性肿瘤诊断和靶向治疗的新靶点。展开更多
Ska2(spindle and KT associated 2),也称FAM33A(family with sequence similarity 33,member A),是新近发现的一个与细胞周期调控和肿瘤发生发展均密切相关的新基因,但其表达调控机制仍不清楚。该研究是在此前对Ska2基因启动子鉴定分...Ska2(spindle and KT associated 2),也称FAM33A(family with sequence similarity 33,member A),是新近发现的一个与细胞周期调控和肿瘤发生发展均密切相关的新基因,但其表达调控机制仍不清楚。该研究是在此前对Ska2基因启动子鉴定分析的基础上,进一步对Ska2基因的核心启动子区域进行初步鉴定和分析。采用PCR技术,构建5个Ska2基因启动子的系列删除体,并对Ska2核心启动子区中的2个潜在NF-Y结合位点进行单独或联合定点突变,构建3个定点突变重组体,采用荧光素酶双报告基因分析技术检测各重组体的启动子活性。启动子活性分析结果表明,所构建删除体均具有较强启动子活性;2个潜在NF-Y结合位点单独或联合定点突变均可导致Ska2启动子活性的降低;共转染NF-Y表达质粒后,Ska2的启动子活性明显提高。该研究结果不仅将Ska2的核心启动子区域定位于一个80 bp的范围内,并且也提示NF-Y是一个调节Ska2转录的重要转录因子。展开更多
纺锤体和动粒相关蛋白2(spindle and kinetochore associated 2,SKA2)是2006年首次发现的参与纺锤体与动粒相关复合物组成的重要蛋白质。传统观点认为,SKA2参与细胞周期的调控。新近研究发现,ska2在肿瘤细胞和组织中异常表达,发挥着癌...纺锤体和动粒相关蛋白2(spindle and kinetochore associated 2,SKA2)是2006年首次发现的参与纺锤体与动粒相关复合物组成的重要蛋白质。传统观点认为,SKA2参与细胞周期的调控。新近研究发现,ska2在肿瘤细胞和组织中异常表达,发挥着癌基因的作用,且在不同肿瘤中存在多种调控机制。该文结合我们的实验结果,对SKA2在肿瘤发生、发展中的作用及其调控机制进行综述,为癌基因ska2的深入研究及肿瘤的靶向治疗提供新的思路。展开更多
纺锤体与动粒相关复合物2(spindle and kinetochore associated 2,SKA2)是参与维持有丝分裂中期赤道板的稳定和适时关闭纺锤体检测点的重要蛋白质。早期研究发现,SKA2不仅调控细胞周期的进程而影响细胞增殖,还能通过其他分子机制参于肿...纺锤体与动粒相关复合物2(spindle and kinetochore associated 2,SKA2)是参与维持有丝分裂中期赤道板的稳定和适时关闭纺锤体检测点的重要蛋白质。早期研究发现,SKA2不仅调控细胞周期的进程而影响细胞增殖,还能通过其他分子机制参于肿瘤的发生。微小RNA(microRNA,miRNA)作为原癌基因或抑癌基因影响肿瘤细胞的增殖和迁移。新近研究显示,SKA2在其内含子区域miRNA的调节下,在一些肿瘤组织和细胞中异常高表达。由此可见,SKA2和miRNA之间存在密切联系。本文结合目前的研究成果,对SKA2与相关的miRNA在肿瘤发生发展中的作用及其分子机制作一综述。展开更多
SKA2(spindle and KT associated 2),also referred to as FAM33A(family with sequence similarity 33,member A),is a recently identified gene involved in cell cycle regulation,and growing evidence is implicating its roles i...SKA2(spindle and KT associated 2),also referred to as FAM33A(family with sequence similarity 33,member A),is a recently identified gene involved in cell cycle regulation,and growing evidence is implicating its roles in tumorigenesis and psychiatric disorders.It has been demonstrated that SKA2,along with its coworkers SKA1 and SKA3,constitutes the SKA complex which plays a critical role in the maintenance of the metaphase plate and/or spindle checkpoint silencing during mitosis.SKA2 is over-expressed both in cancer cell lines and clinical samples including small cell lung cancer and breast cancer,whereas downregulation of SKA2 is associated with depression and suicidal ideation.The expression of SKA2 is regulated by transcription factors including NF-kB and CREB,miRNAs as well as DNA methylation.In this review,we provide an overview of studies that reveal SKA2 gene and protein characteristics as well as physiological function,with a special focus on its transcription regulatory mechanisms,and also provide a summary regarding the translational opportunity of the SKA2 gene as a clinical biomarker for cancers and psychiatric disorders.展开更多
文摘Ska2(spindle and KT associated 2),也称FAM33A(family with sequence similarity 33,member A),是一个最近鉴定的参与细胞周期调控与肿瘤发生发展的新基因。现有研究初步证实,Ska2参与组成Ska复合体,在有丝分裂中期纺锤体检验点关闭中起重要作用;Ska2在小细胞肺癌和乳腺癌中呈现表达上调,可通过糖皮质激素受体等途径参与细胞增殖调节和肿瘤发生发展;NF-κΒ和CREB等转录因子可能参与Ska2的表达调控。Ska2有望成为一个恶性肿瘤诊断和靶向治疗的新靶点。
文摘纺锤体和动粒相关蛋白2(spindle and kinetochore associated 2,SKA2)是2006年首次发现的参与纺锤体与动粒相关复合物组成的重要蛋白质。传统观点认为,SKA2参与细胞周期的调控。新近研究发现,ska2在肿瘤细胞和组织中异常表达,发挥着癌基因的作用,且在不同肿瘤中存在多种调控机制。该文结合我们的实验结果,对SKA2在肿瘤发生、发展中的作用及其调控机制进行综述,为癌基因ska2的深入研究及肿瘤的靶向治疗提供新的思路。
文摘纺锤体与动粒相关复合物2(spindle and kinetochore associated 2,SKA2)是参与维持有丝分裂中期赤道板的稳定和适时关闭纺锤体检测点的重要蛋白质。早期研究发现,SKA2不仅调控细胞周期的进程而影响细胞增殖,还能通过其他分子机制参于肿瘤的发生。微小RNA(microRNA,miRNA)作为原癌基因或抑癌基因影响肿瘤细胞的增殖和迁移。新近研究显示,SKA2在其内含子区域miRNA的调节下,在一些肿瘤组织和细胞中异常高表达。由此可见,SKA2和miRNA之间存在密切联系。本文结合目前的研究成果,对SKA2与相关的miRNA在肿瘤发生发展中的作用及其分子机制作一综述。
基金This work was supported by the National Natural Science Foundation of China(No.81672301 to Youquan Bu)the Basic Sciences and Advanced Technology Key Project of CQ CSTC(No.cstc2017jcyjBX0069 to Youquan Bu).
文摘SKA2(spindle and KT associated 2),also referred to as FAM33A(family with sequence similarity 33,member A),is a recently identified gene involved in cell cycle regulation,and growing evidence is implicating its roles in tumorigenesis and psychiatric disorders.It has been demonstrated that SKA2,along with its coworkers SKA1 and SKA3,constitutes the SKA complex which plays a critical role in the maintenance of the metaphase plate and/or spindle checkpoint silencing during mitosis.SKA2 is over-expressed both in cancer cell lines and clinical samples including small cell lung cancer and breast cancer,whereas downregulation of SKA2 is associated with depression and suicidal ideation.The expression of SKA2 is regulated by transcription factors including NF-kB and CREB,miRNAs as well as DNA methylation.In this review,we provide an overview of studies that reveal SKA2 gene and protein characteristics as well as physiological function,with a special focus on its transcription regulatory mechanisms,and also provide a summary regarding the translational opportunity of the SKA2 gene as a clinical biomarker for cancers and psychiatric disorders.
