Rsx is a metatherian RNA with Xist-like properties in X-chromosome inactivation.

Rsx is a metatherian RNA with Xist-like properties in X-chromosome inactivation.
复制标题

DOI:
10.1038/nature11171
复制
发表时间:
2012-07-12
期刊:
影响因子:
64.8
通讯作者:
Turner, James M. A.
Turner, James M. A.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Grant, Jennifer;Mahadevaiah, Shantha K.;Khil, Pavel;Sangrithi, Mahesh N.;Royo, Helene;Duckworth, Janine;McCarrey, John R.;VandeBerg, John L.;Renfree, Marilyn B.;Taylor, Willie;Elgar, Greg;Camerini-Otero, R. Daniel;Gilchrist, Mike J.;Turner, James M. A.

文献摘要

参考文献

被引文献

相似文献

在雌性(XX)哺乳动物中,两条X染色体中的一条被灭活,以确保与雄性(XY)相同剂量的X连锁基因。真兽目哺乳动物中的X失活由非编码RNA Xist介导。Xist在后兽亚目动物中没有发现,而X失活是如何在这些哺乳动物中启动的,这一直是几十年来猜测的主题。使用有袋类Monodelphis arctica,我们确定Rsx(RNA-on-the-silent X),一种RNA,其表现出与X失活中的作用一致的特性。Rsx是一种大的、富含重复序列的RNA,仅在女性中表达,并从失活的X染色体转录并包覆。在雌性生殖细胞中,两条X染色体都是活跃的,Rsx被沉默,将Rsx表达与X失活和再激活联系起来。Rsx转基因在小鼠胚胎干细胞常染色体上的整合导致顺式基因沉默。我们的研究结果允许在哺乳动物中的X-失活的比较研究,并提出有关的机制,X-失活是在真兽目动物实现的问题。
In female (XX) mammals one of the two X chromosomes is inactivated to ensure an equal dose of X-linked genes with males (XY). X-inactivation in eutherian mammals is mediated by the non-coding RNA Xist. Xist is not found in metatherians and how X-inactivation is initiated in these mammals has been the subject of speculation for decades. Using the marsupial Monodelphis domestica we identify Rsx (RNA-on-the-silent X), an RNA that exhibits properties consistent with a role in X-inactivation. Rsx is a large, repeat-rich RNA that is expressed only in females and is transcribed from, and coats, the inactive X chromosome. In female germ cells, where both X chromosomes are active, Rsx is silenced, linking Rsx expression to X-inactivation and reactivation. Integration of an Rsx transgene on an autosome in mouse embryonic stem cells leads to gene silencing in cis. Our findings permit comparative studies of X-inactivation in mammals and pose questions about the mechanisms by which X-inactivation is achieved in eutherians.
DOI: 10.1038/386272a0
发表时间: 1997-03-20
期刊: NATURE
影响因子: 64.8
作者:
Herzing, LBK;Romer, JT;Ashworth, A
通讯作者: Ashworth, A
DOI: 10.1126/science.1126316
发表时间: 2006-06-16
期刊: SCIENCE
影响因子: 56.9
作者:
Duret, L;Chureau, C;Avner, P
通讯作者: Avner, P
DOI: 10.1371/journal.pone.0000860
发表时间: 2007-09-12
期刊: PLOS ONE
影响因子: 3.7
作者:
de Napoles, Mariana;Nesterova, Tatyana;Brockdorff, Neil
通讯作者: Brockdorff, Neil
X 染色体失活对 Xist 的要求
DOI: 10.1038/379131a0
发表时间: 1996-01-11
期刊: NATURE
影响因子: 64.8
作者:
Penny, GD;Kay, GF;Brockdorff, N
通讯作者: Brockdorff, N
DOI: 10.1371/journal.pbio.0020171
发表时间: 2004-07
期刊: PLoS biology
影响因子: 9.8
作者:
Kohlmaier A;Savarese F;Lachner M;Martens J;Jenuwein T;Wutz A
通讯作者: Wutz A