High-Throughput RNA Interaction Assay Using Tethered Transcripts
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Solution Overview
Problem
Current methods for characterizing interactions between RNA molecules and other factors lack high-throughput capability and quantitative analysis, limiting the understanding and study of RNA function in gene regulation and human diseases.
Innovation Solution
A method involving a nucleic acid construct with a promoter sequence, a nucleotide sequence encoding the RNA molecule, and an RNA polymerase blocking site is used to tether RNA transcripts to the construct, allowing for high-throughput detection of interactions with other molecules by halting transcription and contacting the tethered RNA with potential binding partners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional methods (EMSA, fluorescence polarization, FCS) are used to study RNA interactions, then interaction characterization is possible, but high-throughput capability and quantitative analysis are lacking
Solution Approach 1:
The method segments the RNA interaction study into discrete, parallelizable units by using individual nucleic acid constructs with unique identifiers. Each construct can be processed independently through transcription halting and interaction detection, enabling high-throughput parallel analysis of multiple RNA molecules simultaneously
Solution Approach 2:
The patent creates copies of RNA molecules through in vitro transcription from nucleic acid constructs, allowing multiple identical copies to be generated and analyzed. This enables quantitative measurement of interactions by analyzing populations of identical RNA molecules rather than single molecules, improving throughput and statistical reliability
2Measurement precision
If traditional RNA interaction methods are used, then interaction detection is possible, but quantitative analysis and kinetic information are not provided
Solution Approach 1:
The method incorporates feedback mechanisms through detection of interaction products or changes in physical properties that quantify binding events. By measuring the extent of interaction (e.g., through fluorescence intensity, binding affinity, or kinetic rates), the system provides quantitative feedback about RNA-molecule interactions, enabling precise measurement of binding constants and kinetic parameters
Solution Approach 2:
The patent utilizes changes in physical or chemical parameters (such as fluorescence intensity, absorbance, or other detectable properties) to quantify interaction strength and kinetic information. By monitoring parameter changes during interaction events, the system extracts quantitative data about binding affinity, association/dissociation rates, and other kinetic parameters
3Adaptability or versatility
If multiple target molecules and millions of different RNAs are analyzed simultaneously, then comprehensive RNA function study is enabled, but existing assays cannot process this scale
Solution Approach 1:
The nucleic acid construct system serves multiple functions: it encodes RNA molecules, provides unique identifiers for sequencing, enables transcription halting for interaction detection, and facilitates multiplexed analysis. This multi-functionality allows a single platform to handle diverse RNA molecules and target molecules simultaneously, achieving both versatility and high throughput
Solution Approach 2:
The patent adds dimensions to RNA analysis by incorporating sequence information (through compatibility with next-generation sequencing) and interaction data in parallel. This multi-dimensional approach allows simultaneous analysis of RNA sequence, structure, interaction partners, and binding kinetics, enabling comprehensive study of millions of RNA molecules with multiple target molecules
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables high-throughput, quantitative characterization of RNA interactions, providing kinetic information and facilitating multiplexed detection of RNA-target molecule interactions, compatible with next-generation sequencing technologies.
Implementation Method 1
transcribing the nucleotide sequence encoding the RNA molecule in vitro using an RNA polymerase to produce an RNA transcript corresponding to the RNA molecule
Data Source
AI summary
The present invention is directed to a method for detecting an interaction between a ribonucleic acid (RNA) molecule and a second molecule. This method involves providing a nucleic acid construct that contains a promoter sequence, a nucleotide sequence encoding the RNA molecule, and an RNA polymerase blocking site. The nucleotide sequence encoding the RNA molecule is transcribed in vitro to produce an RNA transcript corresponding to the RNA molecule. Transcription is halted by the RNA polymerase blocking site under conditions effective for the RNA transcript to remain tethered to the nucleic acid construct. The tethered RNA transcript is contacted with the second molecule and any interaction between the tethered RNA transcript and the second molecule is detecting and identified based on said contacting.