INMAP, a novel truncated version of POLR3B, represses AP-1 and p53 transcriptional activity

INMAP, a novel truncated version of POLR3B, represses AP-1 and p53 transcriptional activity
复制标题

INMAP 是 POLR3B 的新型截短版本,可抑制 AP-1 和 p53 转录活性

DOI:
10.1007/s11010-012-1507-4
复制
发表时间:
2013-02
影响因子:
4.3
通讯作者:
Qianjin Liang
Qianjin Liang
中科院分区:
生物学3区
文献类型:
--
作者:
Yunlei Zhou;Zhe Chen;Yan Lei;Pengcheng Wang;Yanbo Zheng;Le Sun;Qianjin Liang

文献摘要

参考文献

相似文献

INMAP首先被鉴定为间期核和有丝分裂器相关蛋白,在纺锤体的形成和细胞周期进程中起重要作用。在这里,我们报告,INMAP可能是保守的从原核生物到人类,是一个截短的版本的RNA聚合酶III亚基B POLR 3 B,并在几个人类癌细胞系,包括HeLa,Bel-7402,HepG 2和BGC-823上调。缺失分析表明,209-290氨基酸区域是INMAP在细胞核内点状分布所必需的。此外,过量表达INMAP抑制p53和AP-1的转录活性,并呈剂量依赖性。这些结果表明,INMAP可能通过p53和AP-1途径发挥作用,从而提供了其活性与肿瘤发生的可能联系。综合我们的数据和以前的研究,可以得出结论,INMAP起着双重功能的作用,在有丝分裂动力学与基因表达的协调,以及在细胞命运的决定和增殖。
INMAP was first identified as an interphase nucleus and mitotic apparatus-associated protein that plays essential roles in the formation of the spindle and cell-cycle progression. Here, we report that INMAP might be conserved from prokaryotes to humans, is a truncated version of the RNA polymerase III subunit B POLR3B, and is up-regulated in several human cancer cell lines including HeLa, Bel-7402, HepG2 and BGC-823. Deletion analysis revealed that the 209–290 amino-acid region is necessary for the punctate distribution of INMAP in the nucleus. Furthermore, over-expression of INMAP inhibited the transcriptional activities of p53 and AP-1 in a dose-dependent manner. These results suggest that INMAP may function through the p53 and AP-1 pathways, thus providing a possible link of its activity with tumourigenesis. Integrating our data and those in previous studies, it can be concluded that INMAP plays dual functional roles in the coordination of mitotic kinetics with gene expression as well as in cell-fate determination and proliferation.
DOI: 10.1101/gad.13.5.607
发表时间: 1999-03-01
影响因子: 10.5
作者:
Schreiber, M;Kolbus, A;Wagner, EF
通讯作者: Wagner, EF
DOI: 10.1016/0168-9525(94)90251-8
发表时间: 1994-03
期刊: Science
影响因子: 56.9
作者:
Silvia Tornaletti;Gerd P. Pfeifer
通讯作者: Silvia Tornaletti;Gerd P. Pfeifer
DOI: --
发表时间: 2006
期刊: --
影响因子: --
作者:
F. Leach;T. Tokino;P. Meltzer;M. Burrell;J. Oliner;Sharon Smith;D. Hill;D. Sidransky;K. Kinzler;B. Vogelstein
通讯作者: F. Leach;T. Tokino;P. Meltzer;M. Burrell;J. Oliner;Sharon Smith;D. Hill;D. Sidransky;K. Kinzler;B. Vogelstein
DOI: 10.1016/s0016-5085(94)94217-x
发表时间: 1994-01-01
期刊: GASTROENTEROLOGY
影响因子: 29.4
作者:
HAMELIN, R;LAURENTPUIG, P;THOMAS, G
通讯作者: THOMAS, G
DOI: 10.4161/cc.19901
发表时间: 2012-05-15
期刊: CELL CYCLE
影响因子: 4.3
作者:
Goloudina, Anastasia R.;Mazur, Sharlyn J.;Demidov, Oleg N.
通讯作者: Demidov, Oleg N.