Two classes of silencing RNAs move between Caenorhabditis elegans tissues.

Two classes of silencing RNAs move between Caenorhabditis elegans tissues.
复制标题

DOI:
10.1038/nsmb.2134
复制
发表时间:
2011-10-09
影响因子:
16.8
通讯作者:
--
中科院分区:
生物学1区
文献类型:
--
作者:

文献摘要

参考文献

被引文献

相似文献

生物体范围的RNA干扰(RNAi)是由于移动的沉默RNA在整个生物体中的运输,但是这些移动的RNA种类在动物中的身份是未知的。在这里,我们提出的遗传证据表明,无论是初始的双链RNA(dsRNA),它触发RNAi,和至少一个dsRNA的中间体在RNAi过程中产生可以作为或产生移动的沉默RNA在秀丽隐杆线虫。这种dsRNA中间体需要长dsRNA结合蛋白RDE-4、内切核酸酶DCR-1(将长dsRNA切割成双链短干扰RNA(ds-siRNA))和推定的核苷酸转移酶MUT-2(RDE-3)。然而,通过RNA依赖性RNA聚合酶RRF-1扩增产生的单链siRNA和下游二级siRNA不产生移动的沉默RNA。将组织间转运限制为长dsRNA和直接加工的siRNA中间体而不是扩增的siRNA可以用于调节与可用dsRNA成比例的系统沉默的程度。
Organism-wide RNA interference (RNAi) is due to the transport of mobile silencing RNA throughout the organism but the identities of these mobile RNA species in animals are unknown. Here we present genetic evidence that both the initial double-stranded RNA (dsRNA), which triggers RNAi, and at least one dsRNA intermediate produced during RNAi can act as or generate mobile silencing RNA in Caenorhabditis elegans. This dsRNA intermediate requires the long dsRNA-binding protein RDE-4, the endonuclease DCR-1, which cleaves long dsRNA into double-stranded short-interfering RNA (ds-siRNA), and the putative nucleotidyltransferase MUT-2 (RDE-3). However, single-stranded siRNA and downstream secondary siRNA produced upon amplification by the RNA-dependent RNA Polymerase RRF-1 do not generate mobile silencing RNA. Restricting inter-tissue transport to long dsRNA and directly processed siRNA intermediates rather than amplified siRNA may serve to modulate the extent of systemic silencing in proportion to available dsRNA.
DOI: 10.1261/rna.2338706
发表时间: 2006-05-01
期刊: RNA
影响因子: 4.5
作者:
Parker, GS;Eckert, DM;Bass, BL
通讯作者: Bass, BL
DOI: 10.1074/jbc.m611768200
发表时间: 2007-06-15
影响因子: 4.8
作者:
Kok, Kin Hang;Ng, Ming-Him James;Jin, Dong-Yan
通讯作者: Jin, Dong-Yan
DOI: 10.1126/science.1087117
发表时间: 2003-09-12
期刊: SCIENCE
影响因子: 56.9
作者:
Feinberg, EH;Hunter, CP
通讯作者: Hunter, CP
DOI: 10.1038/nmeth.1463
发表时间: 2010-07
期刊: NATURE METHODS
影响因子: 48
作者:
Calixto, Andrea;Chelur, Dattananda;Topalidou, Irini;Chen, Xiaoyin;Chalfie, Martin
通讯作者: Chalfie, Martin
DOI: 10.1371/journal.pone.0004052
发表时间: 2008
期刊: PLOS ONE
影响因子: 3.7
作者:
Habig, Jeffrey W.;Aruscavage, P. Joseph;Bass, Brenda L.
通讯作者: Bass, Brenda L.