Hsp70 gene association with nuclear speckles is Hsp70 promoter specific.

Hsp70 gene association with nuclear speckles is Hsp70 promoter specific.
复制标题

DOI:
10.1083/jcb.201004041
复制
发表时间:
2010-11-15
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Belmont AS
Belmont AS
中科院分区:
其他
文献类型:
--
作者:
Hu Y;Plutz M;Belmont AS

文献摘要

参考文献

被引文献

相似文献

Hsp70 转基因系统用于识别与核斑点的基因特异性关联所需的顺式元件。许多哺乳动物基因位于核斑点附近,即富含核糖核酸加工因子的核体。在本文中,我们剖析了热休克蛋白 70 (Hsp70) 基因座核斑点关联所需的顺式元件。我们证明斑点关联是 Hsp70 细菌人工染色体转基因的一般特性,与染色体整合位点无关,并且可以使用 2.8 KB HSPA1A 基因片段进行概括。 Hsp70 转基因及其转录物与核斑点的关联是转录依赖性的,独立于转录序列同一性,但依赖于 Hsp70 启动子序列。转基因斑点关联与转录物积累量不相关,由不同启动子驱动的大型转基因阵列显示没有斑点关联,但具有较低转录物积累的较小Hsp70转基因阵列显示高斑点关联。此外,尽管转录物积累水平相似,但在热休克后观察到 Hsp70 转基因斑点关联,但在镉处理后未观察到。我们认为某些启动子可能指导特定的染色质和/或转录核糖核蛋白修饰,导致核斑点关联。
An Hsp70 transgene system is used to identify cis-elements required for gene-specific association with nuclear speckles. Many mammalian genes localize near nuclear speckles, nuclear bodies enriched in ribonucleic acid–processing factors. In this paper, we dissect cis-elements required for nuclear speckle association of the heat shock protein 70 (Hsp70) locus. We show that speckle association is a general property of Hsp70 bacterial artificial chromosome transgenes, independent of the chromosome integration site, and can be recapitulated using a 2.8-kilobase HSPA1A gene fragment. Association of Hsp70 transgenes and their transcripts with nuclear speckles is transcription dependent, independent of the transcribed sequence identity, but dependent on the Hsp70 promoter sequence. Transgene speckle association does not correlate with the amount of transcript accumulation, with large transgene arrays driven by different promoters showing no speckle association, but smaller Hsp70 transgene arrays with lower transcript accumulation showing high speckle association. Moreover, despite similar levels of transcript accumulation, Hsp70 transgene speckle association is observed after heat shock but not cadmium treatment. We suggest that certain promoters may direct specific chromatin and/or transcript ribonucleoprotein modifications, leading to nuclear speckle association.
DOI: 10.1083/jcb.122.2.283
发表时间: 1993-07
期刊: The Journal of cell biology
影响因子: --
作者:
Wansink DG;Schul W;van der Kraan I;van Steensel B;van Driel R;de Jong L
通讯作者: de Jong L
DOI: 10.1083/jcb.200303131
发表时间: 2003-09-15
影响因子: 7.8
作者:
Shopland, Lindsay S;Johnson, Carol V;Byron, Meg;McNeil, John;Lawrence, Jeanne B
通讯作者: Lawrence, Jeanne B
DOI: 10.1093/nar/gni035
发表时间: 2005-02-24
影响因子: 14.9
作者:
Warming S;Costantino N;Court DL;Jenkins NA;Copeland NG
通讯作者: Copeland NG
DOI: 10.1083/jcb.124.3.249
发表时间: 1994-02
期刊: The Journal of cell biology
影响因子: --
作者:
O'Keefe RT;Mayeda A;Sadowski CL;Krainer AR;Spector DL
通讯作者: Spector DL
DOI: 10.1002/em.20438
发表时间: 2009-01-01
影响因子: 2.8
作者:
Kawata, Koji;Shimazaki, Ryuhei;Okabe, Satoshi
通讯作者: Okabe, Satoshi