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High-throughput cellular RNA device engineering
Brent Townshend1, Andrew B Kennedy1, Joy S Xiang1
1Department of Bioengineering, Stanford University, Stanford, California, USA.
Nature Methods
|August 11, 2015
Summary
Researchers engineered novel RNA devices using aptamers for precise gene regulation. These tertiary-interaction RNA devices offer enhanced performance in gene silencing and ligand sensitivity compared to existing methods.
Area of Science:
- Molecular Biology
- Synthetic Biology
- Biochemistry
Background:
- Developing conditional gene-regulatory devices is crucial for biological manipulation.
- Existing RNA devices often rely on secondary structure changes, limiting their efficiency.
Purpose of the Study:
- To engineer RNA devices from aptamers that utilize ligand-responsive ribozyme tertiary interactions.
- To develop a high-throughput framework for assessing RNA device performance.
Main Methods:
- Utilized a framework for engineering RNA devices from preexisting aptamers.
- Employed cell sorting, high-throughput sequencing, and statistical analyses for parallel measurements.
- Assessed RNA device libraries in the presence and absence of ligands.
Main Results:
- Tertiary-interaction RNA devices demonstrated superior gene silencing, activation ratio, and ligand sensitivity.
- Successfully built biosensors for diverse ligands using the developed method.
- Identified consensus sequences enabling ligand-responsive tertiary interactions.
Conclusions:
- The developed methodology advances the creation of broadly applicable genetic tools.
- Provides a framework for elucidating sequence-structure-function relationships in biomolecules.
- Enables rational design of complex RNA-based devices with enhanced functionality.
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