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Mixed-Mode Chromatography Membranes

a chromatography membrane and mixed-mode technology, applied in the field of multi-modal chromatography, can solve the problems of product aggregation or precipitation, high price, and account for a significant component of the cost of goods

Inactive Publication Date: 2014-08-28
NATRIX SEPARATIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent relates to a composite material which comprises a support member with a plurality of pores and a cross-linked gel located within the pores. The cross-linked gel can have different functional groups, such as cationic, anionic, hydrophobic, hydrophilic, thiophilic, hydrogen bond donating, hydrogen bond accepting, pi-pi bond donating, or metal chelating groups. The composite material has certain properties, such as strong or weak adsorption or absorption of substances. The invention also includes a method for making the composite material and a method of using it to adsorb or absorb substances from a fluid. The technical effects are the creation of a composite material with improved adsorption or absorption properties and a method for its manufacture and use.

Problems solved by technology

However, a major drawback of affinity chromatography is its high price, which, especially in case of therapeutic antibodies needed at high doses or for chronic administration, can account for a significant component of the cost of goods.
In addition, traditional protein A chromatography requires elution at low pH, which can result in product aggregation or precipitation.

Method used

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  • Mixed-Mode Chromatography Membranes

Examples

Experimental program
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Effect test

example 1

[0252]This example illustrates a method of preparing a cation-exchange material of the present invention with multi-modal functionality.

[0253]A 20 wt % solution was prepared by dissolving 2-carboxyethyl acrylate, 2-acrylamido-2-methyl-1-propanesulfonic acid, ethylene glycol phenyl ether methacrylate, 2-(methylthio) ethyl methacrylate in a molar ratio of 1:0.22:0.14:0.06, respectively, in a solvent mixture containing 27.0 wt % N,N′-dimethylacetamide, 61.0 wt % di(propylene glycol)dimethyl ether, 7.15 wt % 1,2-propanediol and 4.85 wt % water. Glycerol 1,3-diglycerolate diacrylate was used as a cross-linking agent to achieve cross-linking density of 8% (mol / mol). The photo-initiator Irgacure 2959 was added in the amount of 1 wt % with respect to the mass of the monomers.

[0254]A composite material was prepared from the solution and the support TR0671 B50 (Hollingsworth & Vose) using the photoinitiated polymerization according to the following general procedure. A weighed support member ...

example 2

[0262]This example illustrates a method of preparing a cation-exchange material of the present invention with multi-modal functionality

[0263]A 23 wt % solution was prepared by dissolving 2-carboxyethyl acrylate, 2-acrylamido-2-methyl-1-propanesulfonic acid, ethylene glycol phenyl ether methacrylate, hydroxypropyl methacrylate in a molar ratio of 1:0.25:0.15:0.14, respectively, in a solvent mixture containing 26.3 wt % N,N′-dimethylacetamide, 59.6 wt % di(propylene glycol)dimethyl ether, 7.3 wt % 1,2-propanediol and 6.8 wt % water. Glycerol dimethacrylate (GDA) and 3-(acryloyloxy)-2-hydroxypropyl methacrylate (AHM) were used as cross-linking agents to achieve cross-linking density of 10.6% (mol / mol). Cross-linking agents GDA and AHM were added in a molar ratio of 1:0.9, respectively. The photo-initiator Irgacure 2959 was added in the amount of 1 wt % with respect to the mass of the monomers.

[0264]A composite material was prepared from the solution and the support TR0671 B50 (Hollings...

example 3

[0267]This example illustrates a method of preparing a cation-exchange material of the present invention with multi-modal functionality

[0268]A 20.6 wt % solution was prepared by dissolving 2-carboxyethyl acrylate, 2-acrylamido-2-methyl-1-propanesulfonic acid, ethylene glycol phenyl ether methacrylate in a molar ratio of 1:0.26:0.15, respectively, in a solvent mixture containing 27.0 wt % N,N′-dimethylacetamide, 60.0 wt % di(propylene glycol)dimethyl ether, 6.5 wt % 1,2-propanediol and 6.5 wt % water. Glycerol propoxylate (1PO / OH) triacrylate was used as cross-linking agents to achieve cross-linking density of 7.7% (mol / mol). The photo-initiator Irgacure 2959 was added in the amount of 1 wt % with respect to the mass of the monomers.

[0269]A composite material was prepared from the solution and the support TR0671 B50 (Hollingsworth & Vose) using the photoinitiated polymerization according to the general procedure described above (Example 1). The sample was irradiated for 10 min at 350...

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Abstract

Described are composite materials and methods of using them for mixed-mode chromatography. In certain embodiments, the composite material comprises a support member, comprising a plurality of pores extending through the support member; and a multi-functional cross-linked gel. The multi-functional cross-linked gel possesses at least two of the following functions or characteristics: cationic, anionic, hydrophobic, hydrophilic, thiophilic, hydrogen bond donating, hydrogen bond accepting, pi-pi bond donating, pi-pi bond accepting, or metal chelating. The composite materials may be used in the separation or purification of a biological molecule or biological ion.

Description

RELATED APPLICATIONS[0001]This application claims the benefit of priority to U.S. Provisional Patent Application Ser. Nos. 61 / 769,330, filed Feb. 26, 2013; the contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]Mixed-mode chromatography (MMC), also known as multimodal chromatography, refers to chromatographic method for separating one analyte from another by utilizing more than one form of interaction between the stationary phase and analytes. Importantly, the secondary interactions in MMC must be strong enough to contribute to retention of the analyte; this approach is distinct from conventional single-mode chromatography.[0003]MMC has many advantages over traditional single-mode chromatography, and over other methods of separation. MMC exhibits higher selectivity than single-mode chromatography. For example, positive, negative and neutral substances could be separated by a reversed phase (RP) / anion-cation exchange (ACE) column in a single run. ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B01J20/32B01J43/00B01J20/291B01D15/36
CPCB01J20/3285B01D15/36B01J43/00B01J20/291B01D15/327B01D15/362B01D15/363B01D15/3847B01J39/26B01J41/20B01J47/12B01J20/28033B01J20/286C07K1/165
Inventor KOMKOVA, ELENA N.HONEYMAN, CHARLES H.
Owner NATRIX SEPARATIONS
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