Publikation: Efficient splicing-based RNA regulators for tetracycline-inducible gene expression in human cell culture and C. elegans
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Synthetic riboswitches gain increasing interest for controlling transgene expression in diverse applications ranging from synthetic biology, functional genomics, and pharmaceutical target validation to potential therapeutic approaches. However, existing systems often lack the pharmaceutically suited ligands and dynamic responses needed for advanced applications. Here we present a series of synthetic riboswitches for controlling gene expression through the regulation of alternative splicing. Placing the 5'-splice site into a stem structure of a tetracycline-sensing aptamer allows us to regulate the accessibility of the splice site. In the presence of tetracycline, an exon with a premature termination codon is skipped and gene expression can occur, whereas in its absence the exon is included into the coding sequence, repressing functional protein expression. We were able to identify RNA switches controlling protein expression in human cells with high dynamic ranges and different levels of protein expression. We present minimalistic versions of this system that circumvent the need to insert an additional exon. Further, we demonstrate the robustness of our approach by transferring the devices into the important research model organism Caenorhabditis elegans, where high levels of functional protein with very low background expression could be achieved.
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FINKE, Monika, Dominik BRECHT, Julia STIFEL, Karina GENSE, Martin GAMERDINGER, Jörg S. HARTIG, 2021. Efficient splicing-based RNA regulators for tetracycline-inducible gene expression in human cell culture and C. elegans. In: Nucleic Acids Research. Oxford University Press. 2021, 49(12), e71. ISSN 0305-1048. eISSN 1362-4962. Available under: doi: 10.1093/nar/gkab233BibTex
@article{Finke2021-07-09Effic-53598, year={2021}, doi={10.1093/nar/gkab233}, title={Efficient splicing-based RNA regulators for tetracycline-inducible gene expression in human cell culture and C. elegans}, number={12}, volume={49}, issn={0305-1048}, journal={Nucleic Acids Research}, author={Finke, Monika and Brecht, Dominik and Stifel, Julia and Gense, Karina and Gamerdinger, Martin and Hartig, Jörg S.}, note={Article Number: e71} }
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