Methods and compositions to prevent formation of adhesions in biological tissues
First Claim
1. A method for altering cell or tissue interaction with a surface comprising applying to the surface an effective amount of a copolymer comprising an adsorbing segment containing boronate groups and an adhesion resistant segment,wherein the copolymer is selected from the group consisting of block copolymers where both segments are linear, dendritic copolymers where the adsorbing segment is dendritic and brush copolymers where the adsorbing segment is the copolymer backbone,wherein the adhesion resistant segment is effective to prevent cellular attachment or deposition of biological material on a surface coated with the copolymer.
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Abstract
The invention discloses materials that adsorb readily to the surfaces of body tissues in situ and provide a steric barrier between such tissues, so that tissue adhesions, which typically form following surgical procedures, are minimized. These materials contain a polymer of hydrophilic molecules such as polyethylene glycol (PEG) bound to a polymer that spontaneously adsorbs to biological tissue such as phenylboronic acid (PBA). The PEG-PBA co-polymer can be formed in a variety of geometries. The materials can also be used to coat prosthetics and other implants.
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Citations
23 Claims
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1. A method for altering cell or tissue interaction with a surface comprising applying to the surface an effective amount of a copolymer comprising an adsorbing segment containing boronate groups and an adhesion resistant segment,
wherein the copolymer is selected from the group consisting of block copolymers where both segments are linear, dendritic copolymers where the adsorbing segment is dendritic and brush copolymers where the adsorbing segment is the copolymer backbone, wherein the adhesion resistant segment is effective to prevent cellular attachment or deposition of biological material on a surface coated with the copolymer.
Specification