Serine Protease Purification via Affinity Chromatography
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Solution Overview
Problem
Current methods for purifying modified derivatives of factor Xa, such as r-Antidote, pose challenges due to their incompatibility with routine clotting factor purification methods, necessitating the development of specific and effective purification techniques to address the bleeding risks associated with anticoagulant therapy and the need for rapid reversal of anticoagulant activity.
Innovation Solution
The use of compounds with binding affinity to serine proteases, specifically modified derivatives of factor Xa, covalently attached to an activated solid support, forming an affinity column, where the serine protease is retained and purified using a competitive agent in an elution buffer, allowing for effective separation from impurities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If routine methods for purification of clotting factors are used, then the purification process is simple and familiar, but they cannot be used for modified derivatives of factor Xa due to structural modifications
Solution Approach 1:
The patent introduces a mediator molecule that specifically binds to the modified factor Xa derivative, enabling purification through affinity chromatography. This mediator acts as an intermediary that bridges the gap between the modified protein and the purification system, allowing selective capture and recovery of the modified derivative using standardized chromatography equipment and procedures.
2Manufacturing precision
If affinity chromatography with specific ligands is used, then purification specificity is high, but the complexity of the purification system increases
Solution Approach 1:
The patent employs a universal affinity tag or ligand system that can be applied to multiple modified factor Xa derivatives with different modifications. This single universal binding partner enables purification of various modified proteins through the same chromatography protocol, reducing the need for multiple specialized purification systems while maintaining high specificity.
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 method enables the efficient purification of serine proteases like factor Xa derivatives, providing a safe and effective antidote to anticoagulants by ensuring high purity and recovery, while minimizing bleeding risks and enabling rapid reversal of anticoagulant activity.
Implementation Method 1
The compounds described herein have binding affinity with the serine protease to be purified
Implementation Method 2
The serine protease can then be eluted by an elution buffer comprising a competitive agent, which can disrupt the binding of the serine protease with the compound
Data Source
AI summary
Disclosed herein are compounds, compositions, methods and kits for purifying a serine protease and serine proteases purified with the compounds, compositions and methods.