Methods of concentrating ligands and active membranes used therefor
First Claim
1. A method of preparing a biologically active membrane having a large surface area comprising the steps of:
- reacting a hydrophilic, microporous, skinless polyamide membrane with an activating agent to form a chemically activated membrane, andreacting said chemically activated membrane with an acceptor molecule to form a biologically active membrane, said acceptor molecule being a member selected from the group consisting of a monoclonal antibody, a polyclonal antibody, an antigenic substance, a glycoprotein, Protein A, a lectin, a carbohydrate, an enzyme substrate, a cofactor, an inhibitor, a hormone, an IgG class of immunoglobulin, a carrier protein, a receptor, heparin, a coagulation factor, and a histone.
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Accused Products
Abstract
A chemically active membrane having a large surface area is provided in which a hydrophilic, microporous, skinless, polyamide membrane is chemically bound to a residue of an activating agent which is capable of reacting with a biologically active material.
The chemically active membrane, formed by reacting a hydrophilic, microporous, skinless, polyamide membrane with an activating agent may be used to prepare a biologically active membrane having a large surface area which comprises an acceptor molecule such as a monoclonal antibody, a polyclonal antibody, an antigenic substance, a glycoprotein, Protein A, a lectin, a carbohydrate, an enzyme substrate, a cofactor, an inhibitor, a hormone, an IgG class of immunoglobulin, a carrier protein, a receptor, heparin, a coagulation factor, or a histone covalently bound to the hydrophilic, microporous, skinless, polyamide membrane by reacting the chemically activate membrane with the acceptor molecule.
145 Citations
61 Claims
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1. A method of preparing a biologically active membrane having a large surface area comprising the steps of:
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reacting a hydrophilic, microporous, skinless polyamide membrane with an activating agent to form a chemically activated membrane, and reacting said chemically activated membrane with an acceptor molecule to form a biologically active membrane, said acceptor molecule being a member selected from the group consisting of a monoclonal antibody, a polyclonal antibody, an antigenic substance, a glycoprotein, Protein A, a lectin, a carbohydrate, an enzyme substrate, a cofactor, an inhibitor, a hormone, an IgG class of immunoglobulin, a carrier protein, a receptor, heparin, a coagulation factor, and a histone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for preparing a biologically active membrane having a large surface area comprising the steps of:
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reacting a hydrophilic, microporous, skinless, polyamide membrane with an activating agent to form a chemically activated membrane wherein said activating agent is either trichloro-s-triazine or N, N'"'"'-dicyclohexylcarbodiimide, and reacting said chemically activated membrane with an acceptor molecule to form a biologically active membrane. - View Dependent Claims (11, 12, 13)
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- 14. A biologically active membrane having a large surface area comprising an acceptor molecule selected from the group consisting of a monoclonal antibody, a polyclonal antibody, an antigenic substance, a glycoprotein, Protein A, a lectin, a carbohydrate, an enzyme substrate, a cofactor, an inhibitor, a hormone, an IgG class of immunoglobulin, a carrier protein, a receptor, heparin, a coagulation factor, and a histone covalently bound to a hydrophilic, microporous, skinless polyamide membrane.
- 21. A biologically active membrane having a large surface area comprising an acceptor molecule covalently bound to a hydrophilic, microporous, skinless, polyamide membrane through a residue of trichloro-s-triazine.
- 28. A method for recovering a ligand from a solution including passing a ligand solution through a biologically active membrane comprising an acceptor molecule selected from the group consisting of a monoclonal antibody, a polyclonal anitbody, an antigenic substance, a glycoprotein, Protein A, a lectin, a carbohydrate, an enzyme substrate, a cofactor, an inhibitor, a hormone, an IgG class of immunoglobulins, a carrier protein, a receptor, heparin, a coagulation factor, and a histone covalently bound to a hydrophilic, microporous, skinless polyamide membrane and binding said ligand to said biologically active membrane.
- 35. A method for recovering a ligand from a solution including passing a ligand solution through a biologically active membrane comprising an acceptor molecule covalently bound to a hydrophilic, microporous, skinless, polyamide membrane through a residue of trichloro-s-triazine and binding said ligand to said biologically active membrane.
- 44. A method for preparing a chemically activated membrane comprising reacting a hydrophilic, microporous, skinless polyamide membrane with an activating agent derived from trichloro-s-triazine or N, N'"'"'-dicyclohexylcarbodiimide to form a chemically activated membrane.
- 53. A chemically active membrane having a large surface area comprising a hydrophilic, microporous, skinless, polyamide membrane chemically bound to a residue of an activating agent, which residue is derived from trichloro-s-triazine or N, N'"'"' dicyclohexylcarbodiimide and is capable of reacting with a biologically active material.
Specification