Targeting duplex DNA with chimeric α,β-triplex-forming oligonucleotides.

Targeting duplex DNA with chimeric α,β-triplex-forming oligonucleotides.
复制标题

DOI:
10.1093/nar/gks410
复制
发表时间:
2012-09
影响因子:
14.9
通讯作者:
Timofeev EN
Timofeev EN
中科院分区:
生物学2区
文献类型:
--
作者:
Kolganova NA;Shchyolkina AK;Chudinov AV;Zasedatelev AS;Florentiev VL;Timofeev EN

文献摘要

参考文献

被引文献

相似文献

三链体引导的 DNA 识别受到多聚嘌呤序列的严格限制。为了用合成生物学工具解决这个问题,我们设计了一组短嵌合α,β-三链体形成寡核苷酸(TFO),并使用各种技术研究了它们与荧光标记的双链体发夹的相互作用。发夹与一系列嵌合探针的杂交表明,双链 DNA 的识别遵循反向 Hoogsteen 和非规范同源氢键结合的复杂规则。在镁离子存在的情况下,嵌合 TFO 能够形成高度稳定的 α,β-三链体,如天然凝胶电泳、阵列上热变性和荧光猝灭实验所示。嵌合三链体的 CD 谱表现出具有 GA 或 GT 第三链的反平行嘌呤三链体通常观察到的特征。 EcoRI 核酸内切酶保护试验证明了嵌合 α,β-TFO 在靶向双链 DNA 方面的巨大潜力。在本文中,我们首次报道了含有 α-胸苷和 α-脱氧鸟苷的嵌合 TFO 对双链体中碱基对倒置的识别。
Triplex-directed DNA recognition is strictly limited by polypurine sequences. In an attempt to address this problem with synthetic biology tools, we designed a panel of short chimeric α,β-triplex-forming oligonucleotides (TFOs) and studied their interaction with fluorescently labelled duplex hairpins using various techniques. The hybridization of hairpin with an array of chimeric probes suggests that recognition of double-stranded DNA follows complicated rules combining reversed Hoogsteen and non-canonical homologous hydrogen bonding. In the presence of magnesium ions, chimeric TFOs are able to form highly stable α,β-triplexes, as indicated by native gel-electrophoresis, on-array thermal denaturation and fluorescence-quenching experiments. CD spectra of chimeric triplexes exhibited features typically observed for anti-parallel purine triplexes with a GA or GT third strand. The high potential of chimeric α,β-TFOs in targeting double-stranded DNA was demonstrated in the EcoRI endonuclease protection assay. In this paper, we report, for the first time, the recognition of base pair inversions in a duplex by chimeric TFOs containing α-thymidine and α-deoxyguanosine.
DOI: 10.1093/nar/gni134
发表时间: 2005-09-12
影响因子: 14.9
作者:
Mergny JL;Li J;Lacroix L;Amrane S;Chaires JB
通讯作者: Chaires JB
DOI: 10.1016/s0006-3495(97)78162-1
发表时间: 1997-09-01
影响因子: 3.4
作者:
Belotserkovskii, BP;Johnston, BH
通讯作者: Johnston, BH
DOI: 10.1021/jo000754w
发表时间: 2000-11-03
影响因子: 3.6
作者:
Chen, DL;McLaughlin, LW
通讯作者: McLaughlin, LW
DOI: 10.1021/jo0511445
发表时间: 2005-10-28
影响因子: 3.6
作者:
Li, JS;Gold, B
通讯作者: Gold, B
DOI: 10.1021/ja0530218
发表时间: 2005-09-14
影响因子: 15
作者:
Li, JS;Chen, FX;Gold, B
通讯作者: Gold, B