N-Methylglucamide Detergents for Enveloped Virus Inactivation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The biopharmaceutical industry faces challenges in effectively inactivating and removing enveloped viruses, particularly endogenous retrovirus-like particles from cell cultures, due to the limitations of existing detergents like Triton X-100, which are toxic to the environment and less effective at lower temperatures, necessitating the development of eco-friendly alternatives.
Innovation Solution
The use of N-methylglucamide-based detergents, which are nonionic, biodegradable, and composed of a hydrophilic glucose moiety and hydrophobic fatty acid chain linked by an amide bond, effectively inactivate enveloped viruses by disrupting their envelopes without affecting the stability of bioactive drugs, as demonstrated by their ability to completely inactivate viruses like X-MuLV and PRV within specific concentration ranges and temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Triton X-100 is used for virus inactivation, then virus inactivation efficacy is improved, but environmental safety deteriorates
Solution Approach 1:
The patent replaces the persistent, environmentally harmful Triton X-100 with biodegradable N-methylglucamide detergents that break down into harmless substances (glucosamine, fatty acids, and methanol), effectively using short-lived, environmentally safe alternatives to eliminate long-term environmental contamination risks
Solution Approach 2:
The patent converts the environmental harm caused by Triton X-100 into a benefit by developing detergents whose degradation products are beneficial or harmless to the environment, transforming the waste disposal problem into an environmentally friendly solution
2Reliability
If polysorbates are used for virus inactivation at ambient conditions, then virus inactivation efficacy is improved, but effectiveness at lower temperatures deteriorates
Solution Approach 1:
The patent changes the chemical parameters of the detergent molecules by introducing N-methylglucamide structures with specific fatty acid chains, which fundamentally alters the temperature-dependent behavior to enable effective virus inactivation at lower temperatures while maintaining stability of bioactive drugs
3Object-affected harmful factors
If N-methylglucamides are used for virus inactivation, then environmental safety is improved, but detergent potency may deteriorate
Solution Approach 1:
The patent applies local quality by optimizing specific regions of the detergent molecule - the N-methylglucamide head group provides environmental safety and biodegradability, while the fatty acid chain length and composition are tuned to provide sufficient hydrophobic interaction for effective virus envelope disruption, achieving both safety and potency in different parts of the molecule
Solution Approach 2:
The patent creates composite detergent structures combining the N-methylglucamide moiety with various fatty acid chains, producing a series of compounds with different balances of environmental safety and detergent potency, allowing selection of the optimal composite for specific application requirements
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
N-methylglucamides achieve comparable virus inactivation efficacy to Triton X-100 while being environmentally safer, maintaining the stability of bioactive drugs and demonstrating rapid and complete inactivation of enveloped viruses across various concentrations and temperatures, making them a robust tool in biologics production.
Implementation Method 1
N-methylglucamides, which are nonionic, biodegradable, and composed of a hydrophilic glucose moiety and hydrophobic fatty acid chain linked by an amide bond, effectively inactivate enveloped viruses by disrupting their envelopes
Data Source
AI summary
This disclosure relates to methods for use in inactivating viruses. The methods of inactivating viruses with N-methylglucamides is applicable to the purification process of biologically-active drugs such as protein subunits, proteins (enzymes, factors, etc.), recombinant proteins, antibodies, vaccine or gene therapeutic products. The detergents used in this method are based on multiple N-methylglucamide homologs, consisting of a hydrophilic glucose moiety and hydrophobic fatty acid tail, linked by an amide bond. Additionally, these sugar-based detergents are nonionic by nature, which do not disrupt the drug protein, plasma biologies, non-enveloped viral vaccine or adeno associated viral particles. A method of purifying a biological product solution of interest having an unidentified enveloped virus contaminant, including incubating a biological product solution of interest with a standard solution, inactivating any potential enveloped virus contaminant present in the biological product solution of step (a), measuring the inactivated virus present in the final solution of step (b), incubating a separate biological product solution of interest with a N-methylglucamide solution, measuring the inactivated virus present in the final solution of step (d), and comparing the results of the final solutions of step (c) and step (e).