Polymeric Spacer Adsorption Medium for Biomolecule Accessibility
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Solution Overview
Problem
Conventional adsorption media exhibit low accessibility to polymer chains bearing chromatographically active centers for large target molecules, leading to preferential binding of smaller molecules and suboptimal utilization of ligands, resulting in high production costs.
Innovation Solution
An adsorption medium with polymeric spacer elements bonded to the surface of a chromatography matrix, increasing accessibility for large target molecules and optimizing the utilization of chromatographically active centers, achieved through surface modification and atom transfer radical polymerization (ATRP) techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional adsorption media are used, then smaller molecules are preferentially bound, but accessibility to polymer chains for large target molecules is low
Solution Approach 1:
The adsorption medium is segmented into a chromatography matrix and separately bonded polymeric spacer elements, which are then grafted with polymer chains containing chromatographically active centers. This segmentation creates a hierarchical structure where the spacer elements act as flexible linkers between the rigid matrix and the active centers, improving accessibility for large molecules without compromising the binding efficiency of smaller molecules.
Solution Approach 2:
The patent introduces polymeric spacer elements that extend the polymer chains away from the matrix surface into a third dimension. This dimensional extension creates additional space and flexibility, allowing large target molecules to access the chromatographically active centers more effectively while maintaining the structural integrity of the matrix.
2Quantity of substance
If ligands are densely packed to increase binding capacity, then production costs increase, but ligand utilization remains suboptimal
Solution Approach 1:
The patent applies local quality by creating a non-uniform distribution of chromatographically active centers. The polymeric spacer elements are bonded to specific locations on the matrix surface, and the polymer chains are grafted at these localized points. This creates regions of high ligand density near the spacer elements while maintaining lower density elsewhere, optimizing both ligand utilization and production costs.
Solution Approach 2:
The polymeric spacer elements serve as intermediaries between the matrix and the polymer chains containing ligands. These spacer elements act as mediators that improve the accessibility and utilization of ligands by providing flexible linkages, thereby reducing the need for high ligand density and lowering production costs while maintaining effective binding capacity.
3Ease of manufacture
If polymer chains are directly bonded to matrix surface, then manufacturing is simpler, but accessibility for large molecules is restricted
Solution Approach 1:
The patent introduces polymeric spacer elements as intermediaries between the matrix surface and the polymer chains. These spacer elements are first bonded to the matrix, then serve as attachment points for the polymer chains. This intermediary layer provides flexibility and space, improving accessibility for large molecules while maintaining a relatively simple two-step bonding process.
Solution Approach 2:
The bonding process is segmented into two distinct steps: first bonding the polymeric spacer elements to the matrix surface, then grafting the polymer chains onto the spacer elements. This segmentation allows each step to be optimized independently, maintaining ease of manufacture while achieving improved molecular accessibility through the flexible spacer structure.
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 adsorption medium provides enhanced accessibility for large target molecules, optimizes ligand utilization, and achieves a higher ratio of static protein-binding capacity to ionic capacity, reducing ligand demand and production costs while maintaining permeability.
Implementation Method 1
polymer chains containing chromatographically active centers, wherein the polymer chains have been bonded to the polymeric spacer elements, which have been bonded to the surface of the chromatography matrix
Implementation Method 2
Adsorption medium refers to adsorbents which have functional surface groups, often also referred to as 'chromatographically active centers' and/or 'ligands', which can selectively form bonds with certain components of fluids
Implementation Method 3
achieved through surface modification and atom transfer radical polymerization (ATRP) techniques
Data Source
AI summary
The present invention relates to an adsorption medium including polymeric space elements which have been bonded to the surface of the chromatography matrix, and polymer chains containing chromatographically active centers, wherein the polymer chains have been bonded to the polymeric spacer elements, as well as to a method for the production thereof, and to the use of the adsorption medium for the purification of biomolecules.