UUUUUNU Stimulation of Vaccinia Virus Early Gene Transcription Termination

UUUUUNU Stimulation of Vaccinia Virus Early Gene Transcription Termination
复制标题

UUUUUNU 刺激痘苗病毒早期基因转录终止

DOI:
--
复制
发表时间:
2003
影响因子:
4.8
通讯作者:
E. G. Niles
E. G. Niles
中科院分区:
生物学2区
文献类型:
--
作者:
M. Mohamed;E. G. Niles

文献摘要

参考文献

被引文献

相似文献

牛痘病毒早期基因的独特之处在于转录以信号和因子依赖的方式终止。从这个实验室的最近的结果表明,一个22聚体RNA寡核苷酸含有中央U9序列表现出序列和浓度依赖性的刺激提前转录终止和转录释放的反式。为了更好地了解不同方面的U5NU刺激提前终止,我们评估了各种寡核苷酸的体外活性。无论是含有突变体U5NU信号的RNA还是含有T5NT的单链DNA都不能刺激提前终止,这表明了序列特异性和对核糖的需求。此外,两种寡核苷酸都不能与U5NU竞争,证明每种都不能结合U5NU识别因子。用BrU9或BrdU9取代U9信号抑制正常终止,但不刺激过早终止。BrdU5NdU的加入抑制了U5NU对提前终止的刺激,这表明两种寡核苷酸结合到U5NU识别因子上的相同位点。最后,含有短至9个碱基的RNA的U5NU作为提前终止的有效刺激物。这些观察结果直接影响基于寡核苷酸的抗痘病毒治疗剂的开发。
Vaccinia virus early genes are unique in that transcription terminates in a signal- and factor-dependent manner. Recent results from this laboratory demonstrated that a 22-mer RNA oligonucleotide containing a central U9 sequence exhibited sequence- and concentration-dependent stimulation of premature transcription termination and transcript release in trans. In an effort to better understand the different aspects of the U5NU stimulation of premature termination, we evaluated the activity of various oligonucleotides in vitro. Neither RNA containing a mutant U5NU signal nor single-stranded DNA containing T5NT was able to stimulate premature termination, demonstrating both sequence specificity and a requirement for ribose. Furthermore, neither oligonucleotide was able to compete with U5NU, demonstrating that each failed to bind to the U5NU recognition factor. Substitution of the U9 signal with either BrU9 or BrdU9 inhibited normal termination but did not stimulate premature termination. The addition of BrdU5NdU inhibited U5NU stimulation of premature termination, demonstrating that both oligonucleotides bind to the same site on the U5NU recognition factor. Finally, U5NU containing RNA as short as nine bases served as an effective stimulator of premature termination. These observations impact directly on the development of oligonucleotide based anti-poxvirus therapeutic agents.
使用溶血卵磷脂透化的感染细胞提取物研究病毒转录活性改变的痘病毒 ts 突变的体外生化表型。
DOI: 10.1006/viro.1996.0177
发表时间: 1996
期刊: Virology.
影响因子: --
作者:
Condit,RC;Lewis,JI;Quinn,M;Christen,LM;Niles,EG
通讯作者: Niles,EG
痘苗病毒核苷三磷酸磷酸水解酶 I 与线性寡核苷酸的相互作用。
DOI: 10.1021/bi9903749
发表时间: 1999
期刊: Biochemistry.
影响因子: --
作者:
Christen,LA;Sanders,M;Niles,EG
通讯作者: Niles,EG
DOI: 10.1006/viro.2002.1498
发表时间: 2002
期刊: Virology
影响因子: 3.7
作者:
Mohamed,MohamedR;Christen,LindaA;Niles,EdwardG
通讯作者: Niles,EdwardG
DOI: --
发表时间: 1994
期刊: The Journal of biological chemistry
影响因子: --
作者:
Hagler,J;Luo,Y;Shuman,S
通讯作者: Shuman,S
DOI: --
发表时间: 1994
期刊: The Journal of biological chemistry
影响因子: --
作者:
Higman,MA;Christen,LA;Niles,EG
通讯作者: Niles,EG