Gel Permeation Chromatography Virus Purification Buffer
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Solution Overview
Problem
Chromatographic methods for viral purification, such as gel permeation chromatography, result in significant virus losses, leading to high manufacturing costs.
Innovation Solution
The use of elution buffers containing excipients like histidine or sucrose, divalent cations like magnesium, and phosphate buffered saline to enhance virus recovery from gel permeation chromatography columns, with optional inclusion of non-ionic detergents like polysorbate 80, improves virus retention and recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If gel permeation chromatography is used for virus purification, then purification effectiveness is improved, but virus recovery is reduced
Solution Approach 1:
The invention modifies the chemical composition parameters of the elution buffer by adding excipients (histidine, sucrose, mannitol, or sorbitol) to the phosphate buffered saline. This parameter change in the buffer composition improves virus recovery from the chromatography column while maintaining the purification effectiveness of the gel permeation chromatography method.
2Loss of substance
If conventional phosphate buffered saline is used for elution, then manufacturing cost is reduced, but virus recovery is insufficient
Solution Approach 1:
The invention changes the composition parameters of the elution buffer by incorporating excipients such as histidine, sucrose, mannitol, or sorbitol along with phosphate buffered saline and divalent cations. This modification improves virus recovery efficiency while keeping the manufacturing process economically viable through optimized formulation.
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 described methods increase virus recovery by at least 20% to 35% compared to using phosphate buffered saline alone, reducing manufacturing costs and improving purification efficiency.
Implementation Method 1
contacting a gel permeation chromatography column with a viral preparation comprising a virus and a liquid carrier, wherein the virus is retained on the gel permeation chromatography column
Implementation Method 2
recovering the virus from the gel permeation chromatography column with an elution buffer comprising at least one excipient, a divalent cation, and a phosphate buffered saline
Implementation Method 3
The elution buffer includes at least one excipient, a divalent cation, and a phosphate buffered saline
Data Source
AI summary
Provided herein are elution buffers and methods for purifying viruses using gel permeation chromatography. The methods are useful, for example, in increasing recovery of a virus from a gel permeation chromatography column. The buffers for use in the methods include at least one excipient selected from histidine or sucrose, a divalent cation, a non-ionic detergent, and a phosphate buffered saline.