Collagenase Purification With Neutral Protease Removal
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Solution Overview
Problem
Existing collagenase manufacturing processes often result in degradation due to the presence of neutral protease, which is not effectively removed, leading to impurities and reduced purity and stability of collagenase products.
Innovation Solution
A manufacturing process is developed to control metal levels during fermentation and purification, incorporating steps to eliminate or reduce neutral protease, ensuring collagenase compositions are essentially free of it, by using methods such as ion exchange chromatography and rejecting fractions with detectable levels of neutral protease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional fermentation and purification processes are used, then collagenase can be produced, but neutral protease remains present causing degradation and impurities
Solution Approach 1:
The patent applies extraction by removing neutral protease from the collagenase preparation through specific purification steps. Ion exchange chromatography is used to separate and remove neutral protease impurities from the collagenase product, thereby eliminating the harmful degradation effect while maintaining collagenase production.
Solution Approach 2:
The patent changes process parameters during purification, specifically using ion exchange chromatography with controlled buffer conditions and metal ion levels. By adjusting pH, ionic strength, and metal ion concentrations, the process selectively binds and removes neutral protease while preserving collagenase activity, resolving the contradiction between production and purity.
2Productivity
If metal levels are not controlled during fermentation, then collagenase can be produced, but neutral protease is activated causing product degradation
Solution Approach 1:
The patent applies preliminary action by controlling metal ion levels during the fermentation process itself, before purification. By maintaining specific metal ion concentrations in the growth medium, the process prevents activation of neutral protease genes and reduces neutral protease production, thereby protecting collagenase stability from the outset while maintaining productivity.
Solution Approach 2:
The patent changes fermentation parameters by controlling metal ion concentrations in the growth medium. Specific levels of calcium, magnesium, and other metal ions are maintained to prevent neutral protease activation, while still allowing optimal collagenase production. This parameter control resolves the contradiction between productivity and reliability.
3Manufacturing precision
If conventional purification methods are used, then collagenase can be isolated, but purity remains insufficient due to neutral protease contamination
Solution Approach 1:
The patent uses ion exchange chromatography as an intermediary purification step. This chromatographic method acts as a mediator that selectively interacts with neutral protease through ionic interactions, allowing its removal while collagenase passes through or is separately collected. This intermediary step achieves high purity without requiring excessively complex multi-step procedures.
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 process improves the reproducibility and stability of collagenase products, achieving purities of at least 95% and ensuring safety by minimizing degradation, thus producing a more reliable and safer pharmaceutical formulation.
Implementation Method 1
incorporating steps to eliminate or reduce neutral protease, ensuring collagenase compositions are essentially free of it, by using methods such as ion exchange chromatography
Data Source
AI summary
The present invention relates to the fields of collagenase production and collagenase products, and particularly to improving the reproducibility, purity, and stability of collagenase I and collagenase II compositions, where the compositions are pure to at least 95% by area as measured by reverse phase high pressure liquid chromatography (RP-HPLC) and essentially free of neutral protease.