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A universal system for boosting gene expression in eukaryotic cell-lines
Inbal Vaknin1, Or Willinger1, Jonathan Mandl2
1Department of Biotechnology and Food Engineering, Technion, Haifa, Israel.
Nature Communications
|March 17, 2024
Summary
We developed a design algorithm to boost gene expression in yeast and mammalian cells using synthetic regulatory elements. This system offers a new method for optimizing protein production in biotechnology.
Area of Science:
- Synthetic biology
- Molecular biology
- Biotechnology
Background:
- Optimizing gene expression is crucial for biotechnology.
- Existing methods for transcriptional regulation can be complex and cell-type specific.
Purpose of the Study:
- To develop a transcriptional regulatory design algorithm for boosting gene expression.
- To create a simplified transcriptional architecture for predictable gene regulation.
Main Methods:
- Designed a synthetic upstream regulatory region (sURS) using up to three motifs from 41 conserved eukaryotic motifs.
- Characterized the sURS system using a large oligo-library (189,990 variants).
- Validated the expression model with 43 novel sURS designs in yeast and mammalian cells (CHO-K1, HeLa).
Main Results:
- The oligo-library characterization yielded a predictive expression model.
- Validation experiments confirmed the model's accuracy for unseen sURS designs.
- Identified potential generic grammar rules for gene expression boosting and attenuation in yeast, also functional in mammalian cells.
Conclusions:
- A novel design algorithm for transcriptional regulation was successfully developed and validated.
- The synthetic upstream regulatory region (sURS) system demonstrates predictable gene expression boosting across different cell types.
- This algorithm facilitates enhanced expression of industrially relevant proteins in both yeast and mammalian systems.
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