E. coli Beta-Lactamase Production Yield Optimization
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Solution Overview
Problem
Current methods for producing beta-lactamases in E. coli cells result in low yields, limiting their therapeutic application for maintaining intestinal microbiome balance and preventing antibiotic-associated disruptions.
Innovation Solution
A method involving transforming E. coli cells with a vector encoding the beta-lactamase polypeptide, inducing its expression in the cytoplasm, and recovering it from soluble fractions, achieving high yields of up to 50 grams per liter of culture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current methods are used for producing beta-lactamases in E. coli cells, then the production process is simple, but the yield is low
Solution Approach 1:
The patent applies parameter changes by optimizing multiple cultivation parameters including induction temperature (16-25°C), induction time (18-48 hours), pH (6.8-7.5), and aeration rates (0.5-2.0 vvm) to achieve high beta-lactamase yields of 50 grams per liter or more, transforming a low-yield process into a high-yield production system through systematic parameter optimization
2Reliability
If beta-lactamase production is increased for therapeutic application, then the therapeutic potential improves, but the production cost and complexity increase
Solution Approach 1:
The patent employs self-service principles by utilizing the E. coli cell's own cellular machinery and metabolic pathways for beta-lactamase production. The system uses endogenous resources including amino acids, energy (ATP), and protein synthesis mechanisms to produce the enzyme, eliminating the need for complex external support systems or specialized production infrastructure
Solution Approach 2:
The patent optimizes cultivation parameters including maintaining pH between 6.8-7.5, temperature control at 16-25°C during induction, dissolved oxygen levels (20-80% air saturation), and extended induction periods (18-48 hours) to achieve high yields of 50 grams per liter or more, making therapeutic production economically viable
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly increases the production yield of beta-lactamases, offering improved therapeutic potential for protecting the intestinal microbiome and mitigating antibiotic-related disruptions.
Implementation Method 1
providing a host E. coli cell transformed with a vector comprising a sequence encoding the beta-lactamase polypeptide
Implementation Method 2
The E. coli cell is cultured to induce expression of the beta-lactamase in the cytoplasm
Implementation Method 3
beta-lactamases are able to efficiently catalyze the irreversible hydrolysis of the amide bond of the beta-lactam ring resulting in biologically inactive product(s)
Data Source
AI summary
The invention relates to, in part, improved methods for the production of beta-lactamase using Escherichia coli (E. coli) cells. High yield production of beta-lactamase is achieved using methods of the invention.