Promoter Proximal Sequences for Higher-Yield, Pure RNA Manufacturing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Manufacturing RNA for therapeutic applications faces challenges in yield, purity, and scalability, leading to increased costs that hinder its development and use.
Innovation Solution
The use of recombinant polynucleotide constructs with promoter proximal sequences comprising two or more consecutive identical nucleotides, which enhance yield and purity of polyribonucleotides, allowing for higher quality production suitable for repeated dosing applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional RNA manufacturing methods are used, then production can be maintained at current levels, but yield and purity remain insufficient for therapeutic applications
Solution Approach 1:
The patent modifies the promoter proximal sequence parameters by introducing specific nucleotide compositions (enrichment of A/T nucleotides) and structural features (hairpin formations) at positions +1 to +6 downstream of the promoter. These parameter changes in the DNA template sequence directly improve both RNA purity and yield by enhancing transcription initiation efficiency and RNA polymerase binding.
Solution Approach 2:
The invention applies local quality improvement by specifically modifying only the promoter proximal region (positions +1 to +6) while leaving the rest of the gene sequence unchanged. This localized modification approach allows optimization of transcription efficiency without affecting other functional elements of the RNA molecule.
2Quantity of substance
If RNA manufacturing is scaled up to produce sufficient RNA for therapeutic applications, then quantity increases, but manufacturing costs increase
Solution Approach 1:
By changing the promoter proximal sequence parameters to include enriched A/T nucleotides and specific hairpin structures, the patent achieves higher transcription yields per reaction. This improves the cost-effectiveness of scaling up production, as more RNA is produced from the same amount of starting materials and processing time.
3Productivity
If promoter proximal sequences with consecutive identical nucleotides are used, then yield and purity increase, but sequence complexity increases
Solution Approach 1:
The patent simplifies the promoter proximal sequence by using consecutive identical nucleotides (homopolymeric runs of A or T) rather than complex varied sequences. This parameter change actually reduces sequence complexity while simultaneously improving yield and purity, contrary to the expected trade-off.
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
The solution results in polyribonucleotides produced at increased yield and maintained purity, reducing manufacturing costs and enabling effective therapeutic applications.
Implementation Method 1
a promoter sequence, wherein the promoter sequence comprises a 5' end and a 3' end; a promoter proximal sequence adjacent to the 3' end of the promoter sequence
Data Source
AI summary
Disclosed herein are polynucleotides comprising promoter proximal sequences for use in producing polyribonucleotides with increased yield and purity. Also provided herein are compositions comprising the disclosed polynucleotides, and methods of making and using the same.