Prefilter system for biological systems
First Claim
1. ) A prefilter for a protein purification system comprising a prefilter upstream of and in fluid communication with an affinity chromatography column, the prefilter having one or more layers of one or more media selected to remove non-specific binding constituents from a protein containing stream to be flowed through the affinity chromatography column.
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Accused Products
Abstract
The present invention is to a prefilter for affinity chromatography columns. The prefilter, positioned upstream of the column inlet, reduces the presence of non-specific binding (NSB) species that enter the system, thereby extending the yield, capacity and lifetime of the column. Suitable agents include but are not limited to hydrophobic entities; lipophilic entities; activated carbon; charged cation or anion entities; ligands; particles such as fumed silica, glass, controlled pore glass or derivitized version of each; silica or silicates; and combinations thereof. The material(s) can be incorporated into a variety of media such as fibers, beads, membranes and the like and then incorporated into a variety of device designs including lenticular pads, depth filters, bead containing columns, spiral wound devices, TFF devices and the like.
37 Citations
13 Claims
- 1. ) A prefilter for a protein purification system comprising a prefilter upstream of and in fluid communication with an affinity chromatography column, the prefilter having one or more layers of one or more media selected to remove non-specific binding constituents from a protein containing stream to be flowed through the affinity chromatography column.
Specification