Yeast Recombinant Protein Production via Temperature Shift and Ion Control
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Solution Overview
Problem
Current methods for producing recombinant proteins in yeast cells do not achieve high yields, limiting scalability and efficiency.
Innovation Solution
A method involving culturing yeast cells at specific temperature shifts and adjusting potassium ion concentrations relative to sulfate and phosphate ions in the culture medium, along with controlled feeding strategies, to optimize protein production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional culture methods are used, then the production process is simple, but the recombinant protein yield is low
Solution Approach 1:
The patent applies parameter changes by implementing a temperature shift strategy where the culture temperature is changed from 30°C to 26°C at a specific time point during the culture process. This temperature parameter modification optimizes protein expression and achieves high yields (up to 20 g/L) while maintaining a relatively simple culture process using standard bioreactors and conventional yeast strain
2Productivity
If high protein titers are achieved, then production efficiency improves, but scalability and predictability across different scales are limited
Solution Approach 1:
The patent applies preliminary action by implementing the temperature shift at a specifically predetermined time point during the culture process, before the culture reaches stationary phase. This timing-based control strategy ensures optimal protein expression conditions are established in advance, leading to high and predictable protein yields that can be reliably scaled from laboratory to industrial production levels
Data Source
AI summary
The present invention relates to a method for producing a recombinant protein in yeast cells, wherein the cells are subjected to a temperature shift at a specific timepoint of the cell culture. It also relates to a method for producing a recombinant protein in yeast cells by culturing said yeast cells in a medium having a high concentration of potassium ions compared to the concentration of sulfate and/or phosphate ions.