Signalling pathways in UHRF1-dependent regulation of tumor suppressor genes in cancer.

Signalling pathways in UHRF1-dependent regulation of tumor suppressor genes in cancer.
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UHRF1依赖性调节癌症中肿瘤基因的信号通路。

DOI:
10.1186/s13046-016-0453-5
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发表时间:
2016-11-14
期刊:
Journal of experimental & clinical cancer research : CR
影响因子:
--
通讯作者:
Bronner C
Bronner C
中科院分区:
其他
文献类型:
--
作者:
Alhosin M;Omran Z;Zamzami MA;Al-Malki AL;Choudhry H;Mousli M;Bronner C

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通过 DNA 甲基化和组蛋白变化导致肿瘤抑制基因 (TSG) 的表观遗传沉默是癌症的主要标志。具有 PHD 和环指结构域 1 的泛素样蛋白 (UHRF1) 是一种强效癌基因,在各种实体瘤和血液肿瘤中过度表达,其高表达水平与多种 TSG 的表达降低相关,包括 p16 INK4A、BRCA1、PPARG 和 KiSS1。 UHRF1 利用其多个功能域,在 DNA 甲基化和组蛋白翻译后修饰变化之间建立了强有力的协调对话,导致 TSG 的表观遗传沉默,从而使癌细胞能够逃避凋亡。为了确保细胞分裂过程中 TSG 的沉默,UHRF1 在正确的时间将多种酶招募到正确的位置,包括组蛋白脱乙酰酶 1 (HDAC1)、DNA 甲基转移酶 1 (DNMT1) 以及组蛋白赖氨酸甲基转移酶 G9a 和 Suv39H1。一些体外和体内研究报道了表观遗传因子 UHRF1 通过抑制 TSGs 表达在肿瘤发生中的直接影响,并表明 UHRF1 作为癌症治疗的一个有希望的靶点。这篇综述描述了 UHRF1 在癌症中调节的分子机制,并讨论了其作为诱导 TSG 重新激活和随后细胞凋亡的治疗靶点的重要性。
Epigenetic silencing of tumor suppressor genes (TSGs) through DNA methylation and histone changes is a main hallmark of cancer. Ubiquitin-like with PHD and RING Finger domains 1 (UHRF1) is a potent oncogene overexpressed in various solid and haematological tumors and its high expression levels are associated with decreased expression of several TSGs including p16 INK4A, BRCA1, PPARG and KiSS1. Using its several functional domains, UHRF1 creates a strong coordinated dialogue between DNA methylation and histone post-translation modification changes causing the epigenetic silencing of TSGs which allows cancer cells to escape apoptosis. To ensure the silencing of TSGs during cell division, UHRF1 recruits several enzymes including histone deacetylase 1 (HDAC1), DNA methyltransferase 1 (DNMT1) and histone lysine methyltransferases G9a and Suv39H1 to the right place at the right moment. Several in vitro and in vivo works have reported the direct implication of the epigenetic player UHRF1 in tumorigenesis through the repression of TSGs expression and suggested UHRF1 as a promising target for cancer treatment. This review describes the molecular mechanisms underlying UHRF1 regulation in cancer and discusses its importance as a therapeutic target to induce the reactivation of TSGs and subsequent apoptosis.
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