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Optimizing 5’UTRs for mRNA-delivered gene editing using deep learning
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Optimizing 5’UTRs for mRNA-delivered gene editing using deep learning
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Journal Article
Optimizing 5’UTRs for mRNA-delivered gene editing using deep learning
2024
Overview
mRNA therapeutics are revolutionizing the pharmaceutical industry, but methods to optimize the primary sequence for increased expression are still lacking. Here, we design 5’UTRs for efficient mRNA translation using deep learning. We perform polysome profiling of fully or partially randomized 5’UTR libraries in three cell types and find that UTR performance is highly correlated across cell types. We train models on our datasets and use them to guide the design of high-performing 5’UTRs using gradient descent and generative neural networks. We experimentally test designed 5’UTRs with mRNA encoding megaTAL
TM
gene editing enzymes for two different gene targets and in two different cell lines. We find that the designed 5’UTRs support strong gene editing activity. Editing efficiency is correlated between cell types and gene targets, although the best performing UTR was specific to one cargo and cell type. Our results highlight the potential of model-based sequence design for mRNA therapeutics.
mRNA therapeutics are revolutionizing the pharmaceutical industry. In this study, the authors characterize 5’UTR-regulated translation in cell types relevant for mRNA therapies and with fully random 5’UTRs, and show that 5’UTRs optimized via deep learning support high performance on mRNA-encoded gene editors.
