TRIM3, a tumor suppressor linked to regulation of p21(Waf1/Cip1.).

TRIM3, a tumor suppressor linked to regulation of p21(Waf1/Cip1.).
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DOI:
10.1038/onc.2012.596
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发表时间:
2014-01-16
期刊:
影响因子:
8
通讯作者:
Koff, A.
Koff, A.
中科院分区:
医学1区
文献类型:
--
作者:
Liu, Y.;Raheja, R.;Yeh, N.;Ciznadija, D.;Pedraza, A. M.;Ozawa, T.;Hukkelhoven, E.;Erdjument-Bromage, H.;Tempst, P.;Gauthier, N. P.;Brennan, C.;Holland, E. C.;Koff, A.

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TRIM 基因家族因其在发育、分化和宿主细胞抗病毒防御中的作用而受到广泛研究;然而,在癌症生物学中的作用正在显现。大约 20% 的人类胶质母细胞瘤中 TRIM3 基因座杂合性缺失,提出了这种含有 TRIM 基因家族成员的 NHL 可能是哺乳动物肿瘤抑制基因的可能性。与此一致的是,减少 TRIM3 表达会增加小鼠 PDGF 诱导的神经胶质瘤的发生率并加速其发展。此外,TRIM3 可以结合 cdk 抑制剂 p21WAF1/CIP1。因此,我们得出结论,TRIM3 是映射到染色体 11p15.5 的肿瘤抑制因子,它可以通过隔离 p21 并防止其促进细胞周期蛋白 D1-cdk4 的积累来阻止肿瘤生长。
The TRIM family of genes is largely studied because of their roles in development, differentiation and host cell anti-viral defenses; however, roles in cancer biology are emerging. Loss of heterozygosity of the TRIM3 locus in approximately 20% of human glioblastomas raised the possibility that this NHL containing member of the TRIM gene family might be a mammalian tumor suppressor. Consistent with this, reducing TRIM3 expression increased the incidence of and accelerated the development of PDGF-induced glioma in mice. Furthermore, TRIM3 can bind to the cdk inhibitor p21WAF1/CIP1. Thus, we conclude that TRIM3 is a tumor suppressor mapping to chromosome 11p15.5 and that it can block tumor growth by sequestering p21 and preventing it from facilitating the accumulation of cyclin D1-cdk4.
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