Conjugation of PEG and gold nanoparticles to increase the accessibility and valency of tethered RNA splicing enhancers
Conjugation of PEG and gold nanoparticles to increase the accessibility and valency of tethered RNA splicing enhancers
复制标题
PEG 和金纳米颗粒的缀合可提高束缚 RNA 剪接增强剂的可及性和效价
DOI:
10.1039/c2sc20937c
复制
发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Perrett A
中科院分区:
文献类型:
--
作者:
Perrett A
Since alternative splicing patterns are exhibited by most mammalian genes, the functional properties of a gene may be changed for therapeutic purposes by nudging splicing from one pattern to another. Splicing to a refractory exon can be enhanced using bifunctional targeted oligonucleotide enhancers of splicing (TOES), which anneal to a target exon and carry additional sequence motifs to recruit activator proteins. We have tested here the effectiveness of increasing the availability of the activating domain by using click chemistry to insert spacers of hexaethylene glycol (HEG) or abasic DNA between the activating and annealing domains of the oligonucleotide. We show that the presence of one or two HEG spacers can increase the effectiveness of an oligonucleotide, but the inclusion of 11 or 20 reduced the activity. To increase the valency of the oligonucleotides further, the annealing and activating domains were conjugated to gold nanoparticles (GNPs). We show that activity of these GNP–RNA conjugates in splicing assays depended on the size of the GNP conjugates, the RNA sequence and the directionality (i.e. attachment to GNP at either the 5′ or 3′-ends) of the RNA strands conjugated to the GNP surface. Strikingly, only the activating domains were required.
登录
查看更多内容
影响因子:
13.3
作者:
Krpetic, Zeljka;Guerrini, Luca;Graham, Duncan
通讯作者:
Graham, Duncan
影响因子:
10.5
作者:
Shen, Haihong;Green, Michael R.
通讯作者:
Green, Michael R.
DOI:
--
发表时间:
--
期刊:
--
影响因子:
--
作者:
Hong-Xiang Liu;Michael Q. Zhang;A. Krainer
通讯作者:
Hong-Xiang Liu;Michael Q. Zhang;A. Krainer
影响因子:
2.7
作者:
Ravikumar, VT;Andrade, M;Barone, S
通讯作者:
Barone, S
影响因子:
14.8
作者:
I. Eperon
通讯作者:
I. Eperon