Engineering circular RNA for enhanced protein production.

Engineering circular RNA for enhanced protein production.
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DOI:
10.1038/s41587-022-01393-0
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发表时间:
2023-03
影响因子:
46.9
通讯作者:
Chang HY
Chang HY
中科院分区:
工程技术1区
文献类型:
--
作者:
Chen R;Wang SK;Belk JA;Amaya L;Li Z;Cardenas A;Abe BT;Chen CK;Wender PA;Chang HY

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环状 RNA (circRNA) 是真核细胞中稳定且普遍存在的 RNA,由反向剪接产生。合成的 circRNA 和一些内源性 circRNA 可以编码蛋白质,提高了 circRNA 作为基因表达平台的前景。在这项研究中,我们开发了一种系统方法,用于快速组装和测试影响合成 circRNA 蛋白质生产的特征。为了最大化circRNA翻译,我们优化了五个要素:载体拓扑、5'和3'非翻译区、内部核糖体进入位点和招募翻译起始机制的合成适体。总之,这些设计原则将 circRNA 蛋白产量提高了数百倍,在体外提供了比信使 RNA 更高的翻译,在体内提供了更持久的翻译,并且可推广到多个转基因。通过优化载体设计,环状 RNA 的蛋白质表达增强了数百倍。
Circular RNAs (circRNAs) are stable and prevalent RNAs in eukaryotic cells that arise from back-splicing. Synthetic circRNAs and some endogenous circRNAs can encode proteins, raising the promise of circRNA as a platform for gene expression. In this study, we developed a systematic approach for rapid assembly and testing of features that affect protein production from synthetic circRNAs. To maximize circRNA translation, we optimized five elements: vector topology, 5′ and 3′ untranslated regions, internal ribosome entry sites and synthetic aptamers recruiting translation initiation machinery. Together, these design principles improve circRNA protein yields by several hundred-fold, provide increased translation over messenger RNA in vitro, provide more durable translation in vivo and are generalizable across multiple transgenes. Protein expression from circular RNAs is enhanced several hundred-fold by optimizing vector design.
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发表时间: 2008
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