Pre-trained protein language model for codon optimization

Shashank Pathak, Guohui Lin
12/8/2024
q-bio.QMcs.AI

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Abstract

Motivation: Codon optimization of Open Reading Frame (ORF) sequences is essential for enhancing mRNA stability and expression in applications like mRNA vaccines, where codon choice can significantly impact protein yield which directly impacts immune strength. In this work, we investigate the use of a pre-trained protein language model (PPLM) for getting a rich representation of amino acids which could be utilized for codon optimization. This leaves us with a simpler fine-tuning task over PPLM in optimizing ORF sequences. Results: The ORFs generated by our proposed models outperformed their natural counterparts encoding the same proteins on computational metrics for stability and expression. They also demonstrated enhanced performance against the benchmark ORFs used in mRNA vaccines for the SARS-CoV-2 viral spike protein and the varicella-zoster virus (VZV). These results highlight the potential of adapting PPLM for designing ORFs tailored to encode target antigens in mRNA vaccines.

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Cite this paper

@article{pathak2024pretrained,
  title  = {Pre-trained protein language model for codon optimization},
  author = {Shashank Pathak and Guohui Lin},
  year   = {2024},
  eprint = {2412.10411},
  archivePrefix = {arXiv},
  url    = {http://arxiv.org/abs/2412.10411v1}
}

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