Periodate oxidative method for attachment of biomolecules to medical device surfaces
First Claim
1. A method of crosslinking a coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting tissue and bodily fluids in or temporarily removed from a living mammalian subject, the method comprising the ordered steps of:
- (a) immobilizing a biomolecule on the surface, the biomolecule forming a coating comprising an amine moiety and a 2-aminoalcohol moiety;
(b) applying a periodate to the coating to oxidize the 2-aminoalcohol moiety to form an aldehyde moiety;
(c) allowing the aldehyde moiety to combine with the amine moiety to form an imine moiety; and
(d) reacting the imine moiety with a reducing agent to form a secondary amine and thereby cause at least portions of the coating to crosslink.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods are provided for forming a coating of an immobilized biomolecule on a surface of a medical device to impart improved biocompatibility for contacting tissue and bodily fluids. A 2-aminoalcohol moiety of a biomolecule is oxidized with a periodate to an aldehyde moiety which is reacted with an amine moiety on the surface of a medical device to form an imine moiety, and the imine moiety is reduced to form an amine linkage immobilizing a coating of the biomolecule on the surface. In another method, a biomolecule coating containing an amine moiety and a 2-aminoalcohol moiety is immobilized on the surface of a medical device, the 2-aminoalcohol moiety is oxidized with a periodate to an aldehyde moiety which is reacted with the amine moiety to form an imine moiety, and the imine moiety is reduced to form a secondary amine and crosslink the coating. Each biomolecule may contain an amine moiety and a 2-aminoalcohol moiety, and the aldehyde moiety of one biomolecule resulting from periodate oxidation may react with the amine moiety of another biomolecule. In a further embodiment, a 2-aminoalcohol moiety on the surface of a medical device is oxidized with a periodate to an aldehyde moiety, and an amine moiety of a biomolecule is reacted with the aldehyde moiety to form an imine moiety which is reduced to form an amine linkage immobilizing the biomolecule on the surface.
98 Citations
76 Claims
-
1. A method of crosslinking a coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting tissue and bodily fluids in or temporarily removed from a living mammalian subject, the method comprising the ordered steps of:
-
(a) immobilizing a biomolecule on the surface, the biomolecule forming a coating comprising an amine moiety and a 2-aminoalcohol moiety; (b) applying a periodate to the coating to oxidize the 2-aminoalcohol moiety to form an aldehyde moiety; (c) allowing the aldehyde moiety to combine with the amine moiety to form an imine moiety; and (d) reacting the imine moiety with a reducing agent to form a secondary amine and thereby cause at least portions of the coating to crosslink. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A method of forming a crosslinked biomaterial for use in a medical device, the biomaterial being suitable for contacting tissue and bodily fluids in or temporarily removed from a living mammalian subject, the method comprising the ordered steps of:
-
(a) combining a periodate with two or more biomolecules, the biomolecules comprising an amine moiety and a 2-aminoalcohol moiety, the periodate to oxidize the 2-aminoalcohol moiety to form an aldehyde moiety; (b) allowing the aldehyde moiety of one biomolecule to combine with the amine moiety of another biomolecule to form an imine moiety; and (c) reacting the imine moiety with a reducing agent to form a secondary amine and thereby forming a crosslinked biomaterial. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
-
-
58. A method of forming a coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting tissue and bodily fluids in or temporarily removed from a living mammalian subject, the method comprising the ordered steps of:
-
(a) combining a periodate with a medical device, the device having a suitable biomaterial forming the surface, a 2-aminoalcohol moiety being disposed on the surface, the periodate oxidizing the 2-aminoalcohol moiety to form an aldehyde-functional material; (b) providing a biomolecule, the biomolecule comprising an amine moiety; (c) combining the aldehyde-functional material with the amine moiety to bond the aldehyde-functional material to the amine moiety and thereby form an imine moiety; and (d) reacting the imine moiety with a reducing agent to form an amine linkage, the amine linkage immobilizing the biomolecule on the surface, the immobilized biomolecule forming the coating. - View Dependent Claims (59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76)
-
Specification