Zwitterionic Detergent Lysis for High-Yield Protein Extraction
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Solution Overview
Problem
Current methods for extracting and isolating macromolecules from host cells are labor-intensive, costly, and result in low yields due to the multi-step process involving mechanical or enzymatic lysis, which often requires specialized equipment and generates contamination and heat, leading to inefficient purification.
Innovation Solution
A method using a detergent composition comprising zwitterionic compounds with quaternary amines and sulfonate ions for lysing host cells, which eliminates the need for centrifugation and can be combined with a capture ligand for a one-step extraction and isolation process, enhancing yield and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical or physical disruption methods (sonication, French cell press, homogenization) are used to lyse cells, then cell lysis is achieved, but the process requires specialized equipment, is labor intensive, generates heat that may denature proteins, and results in low target product yield
Solution Approach 1:
The patent replaces mechanical lysis systems (sonication, French press, homogenization) with a chemical lysis system using a specific detergent composition. This substitution eliminates the need for specialized mechanical equipment while achieving effective cell lysis and improving target product yield without heat generation that could denature proteins.
Solution Approach 2:
The patent changes the chemical parameters of the lysis system by using a specific detergent composition with defined properties (non-ionic detergent combined with zwitterionic detergent at specific concentrations and pH ranges). This parameter optimization enables effective lysis while maintaining protein stability and improving yield compared to mechanical methods.
2Productivity
If enzymatic or chemical lysis (using enzymes or detergents) is used to lyse cells, then cell lysis is achieved, but the process dilutes the solution containing cells to be lysed and requires additional purification steps to separate target product from membrane fragments and cellular debris
Solution Approach 1:
The patent merges the lysis function and purification function into a single integrated step. The detergent composition is designed to both lyse cells effectively and facilitate simultaneous purification of the target product, eliminating the need for separate purification steps and reducing overall process complexity while improving productivity.
Solution Approach 2:
The detergent composition performs multiple functions simultaneously: it acts as a cell lysis agent, maintains solution concentration by minimizing dilution, and facilitates purification of the target product from cellular debris. This multi-functionality reduces the number of required steps and improves overall extraction efficiency.
3Reliability
If current detergent-based extraction systems (BugBuster, B-PER) are used, then cell lysis and target product release are achieved, but the process is labor intensive and results in relatively low target product yields
Solution Approach 1:
The patent optimizes the chemical parameters of detergent-based lysis by using a specific combination of non-ionic and zwitterionic detergents at optimized concentrations and pH ranges. This parameter optimization improves target product yield while maintaining ease of operation, overcoming the limitations of existing detergent-based systems.
Solution Approach 2:
The patent uses a composite detergent system combining non-ionic detergent (e.g., Triton X-100, Tween 80) with zwitterionic detergent (e.g., CHAPS, CHAPSO). This composite material approach leverages the complementary properties of both detergent types to achieve superior lysis efficiency and target product recovery, reducing labor intensity while improving yield.
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
The detergent composition significantly improves the yield of target products compared to existing methods, reducing the complexity and cost of the extraction process while minimizing contamination and equipment requirements.
Implementation Method 1
a detergent composition comprising at least two different zwitterionic compounds... to lyse the host cell and release the target product from the cell
Data Source
AI summary
The present invention provides lysis reagents, containers, methods and kits relating to the extraction or the extraction and isolation of a cellular component from a host cell. More specifically, the invention provides combinations of zwitterionic compounds that may be employed to aide in the extraction or the extraction and isolation of a cellular component from a host cell.