Cited by 38Gene Regulatory Network AnalysisRNA and protein synthesis mechanismsViral Infectious Diseases and Gene Expression in Insects

Model-Driven Engineering of Gene Expression from RNA Replicons

Beal, Jacob, Wagner, Tyler E., Kitada, Tasuku, Azizgolshani, Odisse, Parker, Jordan Moberg, Densmore, Douglas, Weiss, Ron·2015·ACS Synthetic Biology

Abstract

RNA replicons are an emerging platform for engineering synthetic biological systems. Replicons self-amplify, can provide persistent high-level expression of proteins even from a small initial dose, and, unlike DNA vectors, pose minimal risk of chromosomal integration. However, no quantitative model sufficient for engineering levels of protein expression from such replicon systems currently exists. Here, we aim to enable the engineering of multigene expression from more than one species of replicon by creating a computational model based on our experimental observations of the expression dynamics in single- and multireplicon systems. To this end, we studied fluorescent protein expression in baby hamster kidney (BHK-21) cells using a replicon derived from Sindbis virus (SINV). We characterized expression dynamics for this platform based on the dose-response of a single species of replicon over 50 h and on a titration of two cotransfected replicons expressing different fluorescent proteins. From this data, we derive a quantitative model of multireplicon expression and validate it by designing a variety of three-replicon systems, with profiles that match desired expression levels. We achieved a mean error of 1.7-fold on a 1000-fold range, thus demonstrating how our model can be applied to precisely control expression levels of each Sindbis replicon species in a system.

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Crossref · 10.1021/sb500173f

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  • One copy of saRNA produces multiple copies of RNA transcripts by the above-described mechanism to initiate self-amplification of antigen genes in the cell.

    “As a result, one copy of saRNA produces multiple copies of RNA transcripts by the above-described mechanism to initiate self-amplification of antigen genes in the cell.35,195,196”

    From Advances in COVID-19 mRNA vaccine development (2022) · cites this paper as [196]

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Authors
Beal, J., Wagner, T. E., Kitada, T., Azizgolshani, O., Parker, J. M., Densmore, D., & Weiss, R.
Affiliations
  • Raytheon (United States) (US)
  • Boston University (US)
  • Massachusetts Institute of Technology (US)
  • University of California, Los Angeles (US)
Corresponding author
Beal, Jacob
Venue
ACS Synthetic Biology
Published
2014-06-06
Volume
4
Issue
1
Pages
48-56
ISSN
2161-5063 (ISSN-L)
OpenAlex
W2104313404
Cited by
38
References
42
Citations by year
2025: 2 · 2024: 2 · 2023: 1 · 2022: 6 · 2021: 3 · 2020: 1 · 2019: 4 · 2018: 4 · 2017: 5 · 2016: 1 · 2015: 6 · 2014: 2 · 2012: 1
FWCI
1.91
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Synthetic Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Defense Sciences Office, DARPA (W911NF-11-054)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Viral Infectious Diseases and Gene Expression in Insects
Keywords
RNA replicon, gene expression modeling, protein abundance, fluorescent protein expression, BHK-21 cells, dose-response relationship, cotransfection, synthetic biology
MeSH terms
Animals, Cell Line, Genetic Engineering, Cricetinae, Luminescent Proteins, Models, Genetic, Replicon, RNA, Viral, Sindbis Virus, Transfection, Gene Expression, Synthetic Biology

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