Reversible binding surface
The present invention relates to a method to treat a product which product comprises a surface which surface includes a plasma polymer of an organic monomer wherein immobilized on said plasma polymerized surface is at least one biological entity comprising, contacting said product with an agent that promotes, either directly or indirectly, the disassociation of said entity from said product.
1. A method for the selective disassociation of at least one bound glycosaminoglycan from a plasma polymerized surface of an organic monomer comprising an allylamine, said method comprising in consecutive order:
providing a plasma polymerized surface comprising said allylamine;
coating said plasma polymerized surface with a solution comprising phosphate buffered saline and at least one glycosaminoglycan;
incubating said coated plasma polymerized surface to induce binding of said at least one glycosaminoglycan;
contacting said surface with at least one agent having a salt concentration of about 500 mM NaCl to about 2 M NaCl, wherein said agent provides for selective disassociation of said at least one bound glycosaminoglycan from said plasma polymerized surface;
washing said incubated coated plasma polymerized surface;
incubating said washed plasma polymerized surface with a solution comprising tumor necrosis factor-inducible gene 6 protein (TSG-6); and
detecting an amount of TSG-6 bound to said plasma polymerized surface, wherein said amount is inversely indicative of the selective disassociation of said at least one bound glycosaminoglycan from said plasma polymerized surface.
2. A method according to claim 1 wherein said glycosaminoglycan is a sulphated biomolecule.
3. A method according to claim 1 wherein said glycosaminoglycan is selected from the group consisting of: hyaluronan; dermatan sulfate; chondroitin sulphate; heparin; heparan sulphate; and keratan sulphate.
4. A method according to claim 1 , wherein said agent has a salt concentration of about 500 mM NaCl to about 1 M NaCl.
5. A method according to claim 1 , wherein said agent has a salt concentration of about 750 mM NaCl to about 1 M NaCl.
6. A method according to claim 1 , wherein said agent has a salt concentration of about 500 mM NaCl to about 750 mM NaCl.