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- W2158721036 abstract "Engineered biological systems hold promise in addressing pressing human needs in chemical processing, energy production, materials construction, and maintenance and enhancement of human health and the environment. However, significant advancements in our ability to engineer biological systems have been limited by the foundational tools available for reporting on, responding to, and controlling intracellular components in living systems. Portable and scalable platforms are needed for the reliable construction of such communication and control systems across diverse organisms. We report an extensible RNA-based framework for engineering ligand-controlled gene-regulatory systems, called ribozyme switches, that exhibits tunable regulation, design modularity, and target specificity. These switch platforms contain a sensor domain, comprised of an aptamer sequence, and an actuator domain, comprised of a hammerhead ribozyme sequence. We examined two modes of standardized information transmission between these domains and demonstrate a mechanism that allows for the reliable and modular assembly of functioning synthetic RNA switches and regulation of ribozyme activity in response to various effectors. In addition to demonstrating examples of small molecule-responsive, in vivo functional, allosteric hammerhead ribozymes, this work describes a general approach for the construction of portable and scalable gene-regulatory systems. We demonstrate the versatility of the platform in implementing application-specific control systems for small molecule-mediated regulation of cell growth and noninvasive in vivo sensing of metabolite production." @default.
- W2158721036 created "2016-06-24" @default.
- W2158721036 creator A5024833677 @default.
- W2158721036 creator A5048408108 @default.
- W2158721036 date "2007-09-04" @default.
- W2158721036 modified "2023-10-10" @default.
- W2158721036 title "A modular and extensible RNA-based gene-regulatory platform for engineering cellular function" @default.
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- W2158721036 doi "https://doi.org/10.1073/pnas.0703961104" @default.
- W2158721036 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/1964840" @default.
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- W2158721036 hasPublicationYear "2007" @default.
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