Biocompatible, low protein adsorption affinity matrix
First Claim
1. An affinity matrix for chromatography and immobilization of biologically active materials comprising a support having a polyurethane coating thereon of said polymer thereon, wherein said polyurethane polymer is derived from prepolymer units of oxyethylene based alcohols having essentially all of the hydroxyl groups capped with polyisocyanate groups and having at least 15% of said polyisocyanate groups reacted with a modifying compound having a first NCO reactive group and a second functional group having a substantially less NCO reactive group, and wherein said polyurethane polymer has been activated by converting said second functional groups to an active functional group capable of covalently attaching a bioaffinity agent, said matrix being characterized by a biocompatible surface which resists nonspecific protein adsorption, wherein the modifying compound is selected from the group consisting of ethanolamine;
- aminoethyl hydrogensulfate;
taurine;
4-aminosulfonyl-1-hydroxy-2-napththoic acid;
glucosamine;
5-(aminosulfonyl) N-((1-ethyl-2-pyrrolidinyl)methyl)-2-methoxybenzamide;
sulfamylphenyl-D-glucosylamine;
4-carboxybenzene-sulfonamide;
sulfanilamide;
cyclic-adenosine monophosphate;
2-aminoethyl phosphonic acid;
tyrosine;
tyramine;
dibutylamine;
L- or DL-cysteine;
L- or DL-cysteine ethyl ester;
L- or DL-cystine dimethyl ester;
L- or DL-Cystine;
L- or DL-cysteinesulfonic acid;
L- or DL-cysteic acid;
cystamine;
2-mercaptoethanol;
ethanethiol;
glutathione;
3-amino-1,2-propanediol;
3-amino-1-propane sulfonic acid;
3-aminophenyl boronic acid;
2-amino-2-deoxy-D-galactose;
1-amino-1-deoxy-D-galactose;
p-aminophenyl-alpha-D-glucose;
p-aminophenyl-1-thio-beta-D-galactose;
penicillamine;
peptides with sulfhydryl groups;
peptides with free amino groups;
animal hormones;
polysaccharides;
lipids;
nucleic acids;
amino sugars;
amino acids;
amine surfactants;
diamines and polyamines.
2 Assignments
0 Petitions
Accused Products
Abstract
Affinity matrices useful for the chromatography and immobilization of biological materials and the method of preparing and using the same are disclosed. The affinity supports are based on hydrated polyurethane polymers which have been activated to provide a means for covalently attaching a variety of bioaffinity agents. The hydrated polymer matrices are characterized by their biocompatibility and resistance to nonspecific protein adsorption. Preferably, the prepolymers used to prepare the hydrated polymers are isocyanate-capped oxyethylene-based diols or polyols, at least 75% of said diols and polyols having a molecular weight of 7000 to about 30,000.
-
Citations
25 Claims
-
1. An affinity matrix for chromatography and immobilization of biologically active materials comprising a support having a polyurethane coating thereon of said polymer thereon, wherein said polyurethane polymer is derived from prepolymer units of oxyethylene based alcohols having essentially all of the hydroxyl groups capped with polyisocyanate groups and having at least 15% of said polyisocyanate groups reacted with a modifying compound having a first NCO reactive group and a second functional group having a substantially less NCO reactive group, and wherein said polyurethane polymer has been activated by converting said second functional groups to an active functional group capable of covalently attaching a bioaffinity agent, said matrix being characterized by a biocompatible surface which resists nonspecific protein adsorption, wherein the modifying compound is selected from the group consisting of ethanolamine;
- aminoethyl hydrogensulfate;
taurine;
4-aminosulfonyl-1-hydroxy-2-napththoic acid;
glucosamine;
5-(aminosulfonyl) N-((1-ethyl-2-pyrrolidinyl)methyl)-2-methoxybenzamide;
sulfamylphenyl-D-glucosylamine;
4-carboxybenzene-sulfonamide;
sulfanilamide;
cyclic-adenosine monophosphate;
2-aminoethyl phosphonic acid;
tyrosine;
tyramine;
dibutylamine;
L- or DL-cysteine;
L- or DL-cysteine ethyl ester;
L- or DL-cystine dimethyl ester;
L- or DL-Cystine;
L- or DL-cysteinesulfonic acid;
L- or DL-cysteic acid;
cystamine;
2-mercaptoethanol;
ethanethiol;
glutathione;
3-amino-1,2-propanediol;
3-amino-1-propane sulfonic acid;
3-aminophenyl boronic acid;
2-amino-2-deoxy-D-galactose;
1-amino-1-deoxy-D-galactose;
p-aminophenyl-alpha-D-glucose;
p-aminophenyl-1-thio-beta-D-galactose;
penicillamine;
peptides with sulfhydryl groups;
peptides with free amino groups;
animal hormones;
polysaccharides;
lipids;
nucleic acids;
amino sugars;
amino acids;
amine surfactants;
diamines and polyamines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 21, 22, 23, 24, 25)
- aminoethyl hydrogensulfate;
-
12. The process of preparing an affinity matrix for chromatography or immobilization of biological materials, which matrix is characterized by a biocompatible surface which resists nonspecific protein adsorption, said process comprising the steps of:
-
a) preparing a prepolymer, the units of which are oxyethylene-based alcohols having essentially all of the hydroxyl groups capped with polyisocyanate; b) reacting said polyisocyanate capped prepolymer with a modifying compound having a first functional group which is NCO reactive and a second functional group which is substantially less NCO reactive to form a modified prepolymer; c) coating the modified prepolymer onto a support; d) curing the modified prepolymer with water to form a modified polyurethane polymer characterized by the second functional group inserted in the prepolymer; and e) reacting the modified polyurethane polymer with an activating compound to convert the second functional group of said polymer to an active functional group capable of covalently attaching a bioaffinity agent. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
Specification