Computational design of small transcription activating RNAs for versatile and dynamic gene regulation.
Computational design of small transcription activating RNAs for versatile and dynamic gene regulation.
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DOI:
10.1038/s41467-017-01082-6
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发表时间:
2017-10-19
影响因子:
16.6
通讯作者:
Lucks JB
中科院分区:
文献类型:
--
作者:
Chappell J;Westbrook A;Verosloff M;Lucks JB
A longstanding goal of synthetic biology has been the programmable control of cellular functions. Central to this is the creation of versatile regulatory toolsets that allow for programmable control of gene expression. Of the many regulatory molecules available, RNA regulators offer the intriguing possibility of de novo design—allowing for the bottom-up molecular-level design of genetic control systems. Here we present a computational design approach for the creation of a bacterial regulator called Small Transcription Activating RNAs (STARs) and create a library of high-performing and orthogonal STARs that achieve up to ~ 9000-fold gene activation. We demonstrate the versatility of these STARs—from acting synergistically with existing constitutive and inducible regulators, to reprogramming cellular phenotypes and controlling multigene metabolic pathway expression. Finally, we combine these new STARs with themselves and CRISPRi transcriptional repressors to deliver new types of RNA-based genetic circuitry that allow for sophisticated and temporal control of gene expression. The structural basis of RNA-based gene control offers the possibility of de novo design. Here the authors present a computational design approach for Small Transcription Activating RNAs a bacterial RNA regulator that allows for versatile and dynamic control of genes, pathways and genetic circuits.
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