Recombinant AAV Lysis with Alkyl Polyglucoside for Full-Particle Recovery
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Solution Overview
Problem
The recovery and ratio of recombinant AAV particles in AAV affinity chromatography are influenced by the detergent used for lysing cells producing the AAV particles, with existing methods not effectively increasing yield or full-to-empty particle ratios.
Innovation Solution
Using an alkyl polyglucoside detergent for lysing recombinant AAV-producing mammalian cells prior to AAV affinity chromatography to enhance both capsid-based and genome-based yields and improve the ratio of full to empty recombinant AAV particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional detergents are used for lysing cells, then cell lysis is achieved, but the recovery and yield of recombinant AAV particles in affinity chromatography are suboptimal
Solution Approach 1:
The patent changes the chemical parameter of the detergent from conventional types to alkyl polyglucoside, which has different solubility and interaction properties. This parameter change optimizes the lysis conditions to preserve AAV particle integrity while releasing them from cells, thereby improving both recovery in affinity chromatography and overall yield
Solution Approach 2:
The alkyl polyglucoside detergent acts as an intermediary substance that facilitates the release of recombinant AAV particles from producing cells. It mediates the interaction between the cell membrane and the viral particles, enabling effective lysis while maintaining particle stability and improving subsequent chromatography recovery
2Manufacturing precision
If conventional detergents are used for lysing cells, then cell lysis is achieved, but the ratio of full to empty recombinant AAV particles is not optimized
Solution Approach 1:
By changing the detergent parameter to alkyl polyglucoside, the patent optimizes the lysis conditions to preserve the integrity of full particles while effectively releasing them. This parameter change improves the manufacturing precision of the particle population by increasing the proportion of full to empty particles
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
Increases the yield and ratio of full to empty recombinant AAV particles in AAV affinity chromatography, optimizing the production process.
Implementation Method 1
releasing recombinant AAV particles from the producing cells by lysing the cells with a detergent
Implementation Method 2
AAV affinity chromatography
Data Source
AI summary
Herein is reported a method for lysing recombinant AAV particle producing mammalian cells comprising the step of bringing a mammalian cell cultivation broth in contact with an alkyl polyglucoside detergent, preferably Triton CG 110, and thereby lysing recombinant AAV particle producing mammalian cells and releasing the produced recombinant AAV particles, wherein the mammalian cell cultivation broth comprises cultivated recombinant AAV particle producing mammalian cells and the cultivation medium used for the cultivation of said recombinant AAV particle producing mammalian cells (spent medium).