The FBI1/Akirin2 target gene, BCAM, acts as a suppressive oncogene.

The FBI1/Akirin2 target gene, BCAM, acts as a suppressive oncogene.
复制标题

FBI1/Akirin2靶基因BCAM充当抑制性癌基因。

DOI:
10.1371/journal.pone.0078716
复制
发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Tashiro F
Tashiro F
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Akiyama H;Iwahana Y;Suda M;Yoshimura A;Kogai H;Nagashima A;Ohtsuka H;Komiya Y;Tashiro F

文献摘要

参考文献

被引文献

相似文献

基底细胞粘附分子(BCAM)是一种免疫球蛋白超家族膜蛋白,作为层粘连蛋白α5受体,已知是Lutheran糖蛋白(LU)的剪接变体。BCAM/LU对层粘连蛋白α5的高亲和力被认为有助于镰状红细胞的发病机制和各种发育过程。然而,BCAM在肿瘤发生中的功能知之甚少。基于表达谱芯片分析,我们发现BCAM是致癌的14-3-3β-FBI 1/Akirin 2复合物的靶基因之一,该复合物作为转录抑制因子,抑制MAPK磷酸酶-1基因的表达。为了阐明BCAM在恶性肿瘤中的详细功能,我们建立了表达BCAM的肝癌K2细胞。这些细胞失去了亲本细胞的恶性特征,如不依赖于锚定的生长、迁移、侵袭和致瘤性。此外,荧光素酶报告基因分析和染色质免疫沉淀分析显示,14-3-3β-FBI 1/Akirin 2复合物与BCAM启动子结合并抑制转录。因此,这些数据表明BCAM是一种抑制性癌蛋白,并且FBI 1/Akirin 2通过下调抑制性癌基因参与肝癌的致瘤性和转移。
Basal cell adhesion molecule (BCAM), known to be a splicing variant of Lutheran glycoprotein (LU), is an immunoglobulin superfamily membrane protein that acts as a laminin α5 receptor. The high affinity of BCAM/LU for laminin α5 is thought to contribute to the pathogenesis of sickle red blood cells and to various developmental processes. However, the function of BCAM in carcinogenesis is poorly understood. Based on microarray expression analysis, we found that BCAM was one of the target genes of the oncogenic 14-3-3β-FBI1/Akirin2 complex, which acts as a transcriptional repressor and suppresses MAPK phosphatase-1 gene expression. To elucidate the detailed function of BCAM in malignant tumors, we established BCAM-expressing hepatoma K2 cells. These cells lost the malignant characteristics of parental cells, such as anchorage-independent growth, migration, invasion, and tumorigenicity. Moreover, luciferase reporter assays and chromatin immunoprecipitation analysis revealed that the 14-3-3β-FBI1/Akirin2 complex bound to the BCAM promoter and repressed transcription. Thus, these data indicate that BCAM is a suppressive oncoprotein, and that FBI1/Akirin2 is involved in tumorigenicity and metastasis of hepatoma through the downregulation of suppressive oncogenes.
DOI: 10.1038/ni1543
发表时间: 2008-01
期刊: Nature immunology
影响因子: 30.5
作者:
通讯作者: --
DOI: 10.1006/scbi.2000.0365
发表时间: 2001-04-01
影响因子: 14.5
作者:
Stetler-Stevenson, WG;Yu, AE
通讯作者: Yu, AE
DOI: 10.1034/j.1600-0560.2000.027003108.x
发表时间: 2000-03-01
影响因子: 1.7
作者:
Bernemann, TM;Podda, M;Boehncke, WH
通讯作者: Boehncke, WH
DOI: 10.1074/jbc.m209856200
发表时间: 2003-03-21
影响因子: 4.8
作者:
Akiyama, H;Fujisawa, N;Tashiro, F
通讯作者: Tashiro, F
DOI: 10.1007/s00403-004-0481-4
发表时间: 2004-04-01
影响因子: 3
作者:
Drewniok, C;Wienrich, BG;Schön, MP
通讯作者: Schön, MP