Patent application number | Description | Published |
20090082217 | Selection of nucleic acid-based sensor domains within nucleic acid switch platform - The invention relates to a method (preferably a high throughput method) for screening for functional aptamer-regulated, ligand-responsive nucleic acids, or “ampliSwitches,” and uses thereof. The subject method not only applies to large molecules, such as proteins, but also applies to relatively small ligands, such as those with molecular weight of no more than 5 kDa, 3 kDa, or 1 kDa. | 03-26-2009 |
20090098561 | Higher-order cellular information processing devices - The invention provides various signal processing devices for integrating two or more biological signals (e.g., the presence, absence or concentration of specific ligands, etc.) to generate a status output, or a response that modulates one or more biological activities based on the status of the biological signals. The various described signal processing/integration mechanisms may be combined with one another to provide the device with more flexibility in integrating high-order cellular information. The signal processing devices of the invention have many uses in various biological systems, including gene expression control or ligand-concentration sensing. | 04-16-2009 |
20090143327 | General composition framework for ligand-controlled regulatory systems - The invention provides an improved design for the construction of extensible nucleic acid-based, ligand-controlled regulatory systems, and the nucleic acid regulatory systems resulting therefrom. The invention contemplates improving the design of the switches (ligand-controlled regulatory systems) through the design of an information transmission domain (ITD). The improved ITD eliminates free-floating ends of the switching and the competing strands, and localizes competitive hybridization events to a contiguous strand of competing and switching strands in a strand-displacement mechanism-based switch, thereby improving the kinetics of strand-displacement. The improved regulatory systems have many uses in various biological systems, including gene expression control or ligand-concentration sensing. | 06-04-2009 |
20110002892 | MODULAR APTAMAR-REGULATED RIBOZYMES - An extensible RNA-based framework for engineering ligand-controlled gene regulatory systems, called ribozyme switches, that exhibit tunable regulation, design modularity, and target specificity is provided. These switch platforms typically contain a sensor domain, comprised of an aptamer sequence, and an actuator domain, comprised of a hammerhead ribozyme sequence. A variety of modes of standardized information transmission between these domains can be employed, and this application demonstrates a mechanism that allows for the reliable and modular assembly of functioning synthetic hammerhead ribozyme switches and regulation of ribozyme activity in response to various effectors. In some embodiments aptamer-regulated cis-acting hammerhead ribozymes are provided. | 01-06-2011 |
20120035065 | Aptamer Regulated Nucleic Acids and Uses Thereof - The invention relates to aptamer-regulated, ligand-responsive nucleic acids, or “ampliSwitches,” and uses thereof. Particular embodiments include a ligand-responsive nucleic acid that comprises a primer sequence domain and an aptamer domain that is responsive to a ligand. | 02-09-2012 |
20120165387 | General composition framework for ligand-controlled RNA regulatory systems - The invention provides an improved design for the construction of extensible nucleic acid-based, ligand-controlled regulatory systems, and the nucleic acid regulatory systems resulting therefrom. The invention contemplates improving the design of the switches (ligand-controlled regulatory systems) through the design of an information transmission domain (ITD). The improved ITD eliminates free-floating ends of the switching and the competing strands, and localizes competitive hybridization events to a contiguous strand of competing and switching strands in a strand-displacement mechanism-based switch, thereby improving the kinetics of strand-displacement. The improved regulatory systems have many uses in various biological systems, including gene expression control or ligand-concentration sensing. | 06-28-2012 |
20120263691 | MODULAR APTAMER-REGULATED RIBOZYMES - An extensible RNA-based framework for engineering ligand-controlled gene regulatory systems, called ribozyme switches, that exhibit tunable regulation, design modularity, and target specificity is provided. These switch platforms typically contain a sensor domain, comprised of an aptamer sequence, and an actuator domain, comprised of a hammerhead ribozyme sequence. A variety of modes of standardized information transmission between these domains can be employed, and this application demonstrates a mechanism that allows for the reliable and modular assembly of functioning synthetic hammerhead ribozyme switches and regulation of ribozyme activity in response to various effectors. In some embodiments aptamer-regulated cis-acting hammerhead ribozymes are provided. | 10-18-2012 |
20130102651 | GENERAL COMPOSITION FRAMEWORK FOR LIGAND-CONTROLLED RNA REGULATORY SYSTEMS - The invention provides an improved design for the construction of extensible nucleic acid-based, ligand-controlled regulatory systems, and the nucleic acid regulatory systems resulting therefrom. The invention contemplates improving the design of the switches (ligand-controlled regulatory systems) through the design of an information transmission domain (ITD). The improved ITD eliminates free-floating ends of the switching and the competing strands, and localizes competitive hybridization events to a contiguous strand of competing and switching strands in a strand-displacement mechanism-based switch, thereby improving the kinetics of strand-displacement. The improved regulatory systems have many uses in various biological systems, including gene expression control or ligand-concentration sensing. | 04-25-2013 |