Magnetic Bead Separation System for Concentrated Biomolecule Recovery
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Solution Overview
Problem
Current chromatography methods face challenges such as sample clarification requirements to prevent clogging, low flow rates with large sample volumes, and dilution of biomolecules during separation, particularly in industrial biopharma processes like monoclonal antibody production.
Innovation Solution
A system and method utilizing magnetic beads with affinity for biomolecules, involving a first compartment for binding and separating magnetic beads with a magnetic field, followed by a second compartment for elution, allowing for concentrated recovery of biomolecules while removing cells and particles and performing virus inactivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional chromatography columns are used for separation, then molecules can be separated with high purity, but the flow rate becomes too slow for large sample volumes and the process becomes cumbersome
Solution Approach 1:
The patent replaces the mechanical chromatography column system with a magnetic field-based separation system. Magnetic beads coated with separation media are used instead of traditional columns, allowing separation to occur in a magnetic field rather than through mechanical flow through a column, thereby achieving both high purity and improved flow rates for large sample volumes
Solution Approach 2:
The patent changes the fundamental parameter of separation from pressure-driven flow through a column to magnetic field-driven separation. By using magnetic beads with affinity for target molecules and applying a magnetic field, the system achieves separation without the flow rate limitations of traditional columns, enabling processing of large sample volumes at higher rates
2Reliability
If sample clarification steps are added to prevent clogging, then column reliability improves, but the process complexity and cost increase
Solution Approach 1:
The patent extracts and removes cells and large particles from the sample before magnetic separation using filtration or centrifugation. This preliminary extraction step prevents clogging of the magnetic beads and maintains system reliability without requiring complex clarification equipment, as the magnetic beads themselves are not susceptible to clogging in the same way traditional columns are
3Device complexity
If batch magnetic separation is used to avoid columns, then process simplicity improves, but the capacity to bind biomolecules is insufficient
Solution Approach 1:
The patent uses composite magnetic beads that combine magnetic properties with affinity-coated surfaces. These composite beads have high binding capacity for biomolecules while maintaining magnetic separability. The composite structure allows the beads to function as both the separation media and the magnetic separation target, achieving high capacity without complicating the process
4Quantity of substance
If large volume compartments are used for magnetic bead collection, then separation capacity improves, but the eluted biomolecules become too diluted
Solution Approach 1:
The patent segments the separation process into distinct stages: binding in a first compartment with magnetic beads, transfer to a second compartment, and elution. This segmentation allows the binding compartment to have large volume for high capacity while the elution compartment can be optimized for concentration, resolving the contradiction between capacity and product concentration
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 approach simplifies and accelerates the separation process, reducing steps and costs, and achieves a more concentrated end product compared to traditional methods, effectively addressing the limitations of existing chromatography techniques.
Implementation Method 1
magnetic beads having an affinity for at least one type of molecules to be separated
Implementation Method 2
at least one magnet adapted to attract said magnetic beads at least after contact of said mixture with said magnetic beads, said at least one magnet is adapted to exert a magnetic field in at least a part of said first compartment
Data Source
AI summary
There is disclosed a combinatory separation system comprising: a first compartment adapted to handle a mixture with magnetic beads having an affinity for molecules, comprising a magnet to attract the beads, a second compartment adapted to receive said magnetic beads transferred thereto with a flow of liquid, and said at least one second compartment is adapted to elute said at least one type of molecules to be separated from said magnetic beads, said at least one second compartment has an outlet comprising means for retaining said magnetic beads in the at least one second compartment. Advantages include that the process becomes simpler quicker and thereby less expensive, since the method is able to remove cells and particles, separate molecules and perform virus inactivation in fewer steps compared to the prior art. Further the method is able to provide a more concentrated end product.