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Strong cation exchange chromatographic matrix and method for using same

a chromatographic matrix and cation exchange technology, applied in the field of ion exchange chromatographic matrix, can solve the problems of long separation time, complex operation, and difficulty in purification, and achieve the effect of efficient flow-through purification

Inactive Publication Date: 2019-07-18
ASAHI KASEI MEDICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention uses a special material that can purify substances quickly and easily. This material is resistant to changes in temperature and can work with a wide range of pH levels. It can be used to purify large amounts of active substances from physiological samples.

Problems solved by technology

However, the blood or the culture solutions containing the antibodies contain proteins other than the antibodies, or complicated impurities derived from raw material solutions used in the cell culture.
Typically, a complicated operation that requires a long time is necessary for separating or purifying the antibodies from these impurity components.
Therefore, the flow-through purification particularly has the difficulty in separating the antibody monomer from the antibody dimer.

Method used

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  • Strong cation exchange chromatographic matrix and method for using same
  • Strong cation exchange chromatographic matrix and method for using same
  • Strong cation exchange chromatographic matrix and method for using same

Examples

Experimental program
Comparison scheme
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example 1

[0131]In Example 1, a cation exchange membrane in a hollow fiber form was prepared by the radiation graft polymerization method.

[0132]1) Preparation of Cation Exchange Membrane

[0133]7.07 g of 2-hydroxyethyl methacrylate and 0.79 g of glycidyl methacrylate were dissolved in 113 mL of methanol, and the solution was bubbled with nitrogen for 30 minutes and used as a reaction solution. 3.03 g (15 cm, 15 fibers) of polyethylene porous hollow fibers having an outside diameter of 3.0 mm, an inside diameter of 2.0 mm, and an average pore size of 0.25 um was placed in a closed container, and air in the container was replaced with nitrogen. Then, the container was irradiated with 25 kGy of γ ray while cooled on dry ice from the outside to generate radicals. The polyethylene porous hollow fibers having the obtained radicals were transferred to a glass container, and oxygen in the reaction tube was removed by reduction in pressure to 200 Pa or lower. 55 mL of the reaction solution adjusted to 4...

example 2

[0154]In Example 2, the same operation as in Example 1 was performed except that a different buffer solution (15 mmol / L acetate buffer solution of pH 5.0 containing 30 mmol / L sodium chloride) was used in the antibody solution and the washing step. The amount of the antibody solution treated was 50 mL, and the concentration thereof was 5.56 mg / mL. The results are shown in FIG. 3.

example 3

[0155]In Example 3, the same operation as in Example 2 was performed except that a different buffer solution (15 mmol / L acetate buffer solution of pH 5.0 containing 50 mmol / L sodium chloride) was used in the antibody solution and the washing step. The amount of the antibody solution treated was 40 mL, and the concentration thereof was 5.56 mg / mL. The results are shown in FIG. 3.

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Abstract

A cation exchange chromatographic matrix comprising a base material, and a copolymer with one monomer unit having at least a sulfonic acid group, the copolymer being immobilized on the base material, wherein: the copolymer forms substantially no cross-linked structure, and the copolymer comprises neither acrylamide nor an acrylamide derivative as a monomer unit, or comprises acrylamide or an acrylamide derivative as a monomer unit in a range which has no substantial influence; the ratio of the mass of the copolymer to the mass of the base material is 5% or more and 200% or less; and the density of the sulfonic acid group is higher than 30 mmol / L and 200 mmol / L or lower.

Description

TECHNICAL FIELD[0001]The present invention relates to an ion exchange chromatographic matrix having a strong cation exchange group, and a method for purifying a biomolecule using the same.BACKGROUND ART[0002]Immunoglobulins (antibodies) are physiologically active substances responsible for immune response. In recent years, their utility value has increased for purposes such as drugs, diagnostics, or separation or purification materials for corresponding antigenic proteins. The antibodies are obtained from the blood of immunized animals, cell culture solutions of cells having the capability to produce the antibodies, or ascitic fluid culture solutions of animals having such capability. However, the blood or the culture solutions containing the antibodies contain proteins other than the antibodies, or complicated impurities derived from raw material solutions used in the cell culture. Typically, a complicated operation that requires a long time is necessary for separating or purifying...

Claims

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Application Information

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IPC IPC(8): B01J39/26B01J39/05B01J39/20B01J47/127C08F255/02C08J5/22C07K1/18C07K16/00C07K1/22B01D15/36B01D15/18B01D15/38
CPCB01J39/26B01J39/05B01J39/20B01J47/127C08F255/023C08J5/2287C07K1/18C07K16/00C07K1/22B01D15/362B01D15/363B01D15/1871B01D15/3809B01D15/36B01J47/12C08J5/22C08F255/02G01N30/02G01N30/88B01J39/07
Inventor TANIGUCHI, HIROKI
Owner ASAHI KASEI MEDICAL CO LTD