Fabrication of stable and RNase-resistant RNA nanoparticles active in gearing the nanomotors for viral DNA packaging.

Fabrication of stable and RNase-resistant RNA nanoparticles active in gearing the nanomotors for viral DNA packaging.
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DOI:
10.1021/nn1024658
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发表时间:
2011-01-25
期刊:
影响因子:
17.1
通讯作者:
Guo P
Guo P
中科院分区:
材料科学1区
文献类型:
--
作者:
Liu J;Guo S;Cinier M;Shlyakhtenko LS;Shu Y;Chen C;Shen G;Guo P

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DNA和RNA都可以作为自下而上制造纳米结构的强大构建模块。30年前,Ned Seeman提出的一个开创性概念导致了DNA纳米技术知识的爆炸。RNA具有DNA的简单操作性,同时又具有蛋白质的非规范碱基配对、功能多样性和催化活性。然而,对RNA对RNA酶降解的敏感性的敬畏使许多科学家对RNA纳米技术望而却步。在这里,我们报告了耐RNase消化的稳定RNA纳米颗粒的构建。化学修饰的RNA保留了其在二聚体形成中正确折叠的性质、在前衣壳结合中的适当结构、以及在使phi29纳米颗粒包装病毒DNA和产生感染性病毒颗粒中的生物活性。我们的研究结果表明,这是切实可行的,以生产抗RNase,生物活性和稳定的RNA应用于纳米技术。
Both DNA and RNA can serve as powerful building blocks for bottom-up fabrication of nanostructures. A pioneering concept proposed by Ned Seeman 30 years ago has led to an explosion of knowledge in DNA nanotechnology. RNA can be manipulated with simplicity characteristic of DNA, while possessing noncanonical base-pairing, versatile function and catalytic activity similar to proteins. However, standing in awe of the sensitivity of RNA to RNase degradation has made many scientists flinch away from RNA nanotechnology. Here we report the construction of stable RNA nanoparticles resistant to RNase digestion. The chemically modified RNA retained its property for correct folding in dimer formation, appropriate structure in procapsid binding, and biological activity in gearing phi29 nanomotor to package viral DNA and producing infectious viral particles. Our results demonstrate that it is practical to produce RNase resistant, biologically active and stable RNA for application in nanotechnology.
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