Immunoadsorption blood purification material and preparation method thereof

[0054] A method for preparing an immunoadsorbent material, comprising the steps of:

[0055] S1) dissolving carbonyldiimidazole CDI with an organic solvent to obtain a CDI activation solution;

[0056] S2) fully contacting the hydroxyl-containing hollow fiber solid-phase carrier with the CDI activation solution to activate the solid-phase carrier;

[0057] S3) mixing the activated solid-phase carrier with the ligand solution, performing a covalent coupling reaction, and performing post-treatment after the reaction to obtain an immunosorbent material;

[0058] The ligand is an amino compound.

[0059] If the solid phase support itself does not contain hydroxyl groups, it is necessary to use existing techniques, such as using chemical methods to first introduce hydroxyl groups.

[0060] In a specific example, the temperature of the activation reaction is 4°C-25°C. Understandably, in the present invention, the activation reaction temperature includes but not limited to 4°C, 10°C,

[0097] This embodiment provides a protein A immunoadsorption material using recombinant protein A and nafamostat mesylate as ligands, specifically as follows:

[0098] S1) Put 100g of dry EVOH hollow fiber (tubular, inner diameter 200μm), 10g of carbonyldiimidazole (CDI) and 10mL of dry acetone in a container, soak and react for 1h at 25°C, take it out and use 70% acetone and dry acetone in sequence Wash to remove imidazole, obtain the hollow fiber matrix containing imidazolyl formate after activation, store the matrix in dry acetone for future use, and mark it as A0;

[0099] S2) Take 100g of A0 prepared above, add 150mL of 0.1mol / L borate buffer solution, control the pH of the system to 7.5-8.5, add 14g of recombinant protein A, 7.5g of nafamostat mesylate, 37°C Soak for 24 hours, stop the reaction, and then wash with 20 times the volume of water for injection;

[0100] S3) After rinsing, add 200mL, 0.2mol / L ethanolamine solution to block the unreacted imidazolyl formate g

[0103] This embodiment provides a protein A immunoadsorption material using recombinant protein A and nafamostat mesylate as ligands, specifically as follows:

[0104] S1) Put 100g of dry EVOH hollow fiber (tubular, inner diameter 200μm), 10g of carbonyldiimidazole (CDI) and 10mL of dry acetone in a container, soak and react for 1h at 25°C, take it out and use 70% acetone and dry acetone in sequence washing to remove imidazole, to obtain a hollow fiber matrix containing imidazolyl formate after activation, the matrix is ​​stored in dry acetone for future use, and marked as A0';

[0105] S2) Take 100g of A0' prepared above, add 150mL of 0.1mol / L borate buffer solution, control the pH value of the system to 7.5-8.5, add 7.5g of recombinant protein A, 7.5g of nafamostat mesylate, Soak and react at 37°C for 24 hours, after stopping the reaction, wash with 20 times the volume of water for injection;

[0106] S3) After rinsing, add 200mL, 0.2mol / L ethanolamine solution to block th