TIF-IA: An oncogenic target of pre-ribosomal RNA synthesis.

TIF-IA: An oncogenic target of pre-ribosomal RNA synthesis.
复制标题

DOI:
10.1016/j.bbcan.2016.09.003
复制
发表时间:
2016-12
影响因子:
11.2
通讯作者:
Zhou, Wei
Zhou, Wei
中科院分区:
医学2区
文献类型:
--
作者:
Jin, Rui;Zhou, Wei

文献摘要

参考文献

被引文献

相似文献

癌细胞将大部分能量消耗用于核糖体生物合成,核糖体前 RNA 转录占所有转录活性的 30-50%。如果能够开发出方法来避免正常细胞中产生副作用,那么这种异常升高的生物活性将是癌症治疗干预的一个有吸引力的目标。 TIF-IA 是一种转录因子,它将 RNA 聚合酶 I 与 UBF/SL-1 复合物连接起来,启动前核糖体 RNA 的转录。它的功能在从酵母到哺乳动物的真核生物中是保守的,并且其活性通过癌细胞中各种致癌激酶的磷酸化而得到促进。 TIF-IA 的消耗会诱导肺癌细胞和小鼠胚胎成纤维细胞死亡,但不会导致敲除研究中评估的其他几种正常组织类型死亡。此外,UTP下调条件下TIF-IA的核积累需要LKB1激酶的活性,LKB1失活的癌细胞在这种应激条件下容易发生细胞死亡。因此,TIF-IA可能是抑制核糖体生物发生而不显着影响正常组织存活的独特靶点。
Cancer cells devote the majority of their energy consumption to ribosome biogenesis, and pre-ribosomal RNA transcription accounts for 30–50% of all transcriptional activity. This aberrantly elevated biological activity is an attractive target for cancer therapeutic intervention if approaches can be developed to circumvent the development of side effects in normal cells. TIF-IA is a transcription factor that connects RNA polymerase I with the UBF/SL-1 complex to initiate the transcription of pre-ribosomal RNA. Its function is conserved in eukaryotes from yeast to mammals, and its activity is promoted by the phosphorylation of various oncogenic kinases in cancer cells. The depletion of TIF-IA induces cell death in lung cancer cells and mouse embryonic fibroblasts but not in several other normal tissue types evaluated in knock-out studies. Furthermore, the nuclear accumulation of TIF-IA under UTP down-regulated conditions requires the activity of LKB1 kinase, and LKB1-inactivated cancer cells are susceptible to cell death under such stress conditions. Therefore, TIF-IA may be a unique target to suppress ribosome biogenesis without significantly impacting the survival of normal tissues.
DOI: 10.1186/1471-2199-8-109
发表时间: 2007-11-29
影响因子: --
作者:
Amit, Maayan;Sela, Noa;Keren, Hadas;Melamed, Ze'ev;Muler, Inna;Shomron, Noam;Izraeli, Shai;Ast, Gil
通讯作者: Ast, Gil
DOI: 10.1128/mcb.01464-07
发表时间: 2008-03-01
影响因子: 5.3
作者:
Beckouet, Frederic;Labarre-Mariotte, Sylvie;Thuriaux, Pierre
通讯作者: Thuriaux, Pierre
DOI: 10.1038/415141a
发表时间: 2002-01-10
期刊: NATURE
影响因子: 64.8
作者:
Gavin, AC;Bösche, M;Superti-Furga, G
通讯作者: Superti-Furga, G
DOI: 10.1128/mcb.21.15.4847-4855.2001
发表时间: 2001-08-01
影响因子: 5.3
作者:
Aprikian, P;Moorefield, B;Reeder, RH
通讯作者: Reeder, RH
DOI: 10.1016/j.bbagrm.2008.08.010
发表时间: 2008-12-01
影响因子: 4.7
作者:
Fatyol, Karoly;Grummt, Ingrid
通讯作者: Grummt, Ingrid