Enhanced circulation effector composition and method
First Claim
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1. A liposome composition, comprisingliposomes, each having an outer layer of polyethylene glycol polymer chains having a molecular weight of between about 1,000–
- 10,000 Daltons, andan effector molecule attached to the distal ends of said chains, said effector molecule having binding affinity to a cell receptor,wherein said liposome-bound effector molecule binds to the cell receptor and sterically hinders the cell receptor.
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Abstract
A liposome composition comprising small, surface-bound effector molecules is disclosed. The liposomes have a surface layer of hydrophilic polymer chains, for enhanced circulation time in the bloodstream. The effector molecules are attached to the distal ends of the polymer chains. In one embodiment, the effector is polymyxin B, for treatment of septic shock.
19 Citations
48 Claims
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1. A liposome composition, comprising
liposomes, each having an outer layer of polyethylene glycol polymer chains having a molecular weight of between about 1,000– - 10,000 Daltons, and
an effector molecule attached to the distal ends of said chains, said effector molecule having binding affinity to a cell receptor, wherein said liposome-bound effector molecule binds to the cell receptor and sterically hinders the cell receptor. - View Dependent Claims (2, 3, 4, 5, 6)
- 10,000 Daltons, and
-
7. A liposome composition for use in treating a condition mediated by binding of one binding member to a second binding member, comprising
liposomes, each having an outer layer of polyethylene glycol polymer chains having a molecular weight of between about 1,000– - 10,000 Daltons, and
an effector molecule attached to the distal ends of said chains, said effector molecule having binding affinity to a cell receptor, wherein said liposome-bound effector molecule binds to the cell receptor and sterically hinders the cell receptor. - View Dependent Claims (8, 9, 10, 11, 12)
- 10,000 Daltons, and
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13. A liposome composition for use in treating a condition mediated by binding of one binding member, which is present in the bloodstream, to a second binding member, comprising
liposomes, each having an outer layer of polyethylene glycol polymer chains having a molecular weight of between about 1,000– - 10,000 Daltons, and
an effector molecule attached to the distal ends of said chains, said effector molecule having binding affinity to a cell receptor, wherein said liposome-bound effector molecule binds to the cell receptor and sterically hinders the cell receptor. - View Dependent Claims (14, 15, 16, 17, 18)
- 10,000 Daltons, and
-
19. A liposome composition for use in treating a condition mediated by binding of a first binding member, which is a pathogen or cell in the bloodstream, to a second binding member, comprising
liposomes, each having an outer layer of polyethylene glycol polymer chains having a molecular weight of between about 1,000– - 10,000 Daltons, and
an effector molecule attached to the distal ends of said chains, said effector molecule having binding affinity to a cell receptor, wherein said liposome-bound effector molecule binds to the cell receptor and sterically hinders the cell receptor. - View Dependent Claims (20, 21, 22, 23, 24)
- 10,000 Daltons, and
-
25. A liposome composition for use in treating a condition mediated by binding of a first binding member to a second binding member, which is a target cell, comprising
liposomes, each having an outer layer of polyethylene glycol polymer chains having a molecular weight of between about 1,000– - 10,000 Daltons, and
an effector molecule attached to the distal ends of said chains, said effector molecule having binding affinity to a cell receptor, wherein said liposome-bound effector molecule binds to the cell receptor and sterically hinders the cell receptor. - View Dependent Claims (26, 27, 28, 29, 30)
- 10,000 Daltons, and
-
31. A liposome composition for use in treating a condition mediated by binding of a first binding member, which is a pathogen, to a second binding member, which is a target cell, comprising
liposomes, each having an outer layer of polyethylene glycol polymer chains having a molecular weight of between about 1,000– - 10,000 Daltons, and
an effector molecule attached to the distal ends of said chains, said effector molecule having binding affinity to a cell receptor, wherein said liposome-bound effector molecule binds to the cell receptor and sterically hinders the cell receptor. - View Dependent Claims (32, 33, 34, 35, 36)
- 10,000 Daltons, and
-
37. A liposome composition for use in treating a condition mediated by binding of a first binding member, which is a cell in the bloodstream, to a second binding member, which is a target cell, comprising
liposomes, each having an outer layer of polyethylene glycol polymer chains having a molecular weight of between about 1,000– - 10,000 Daltons, and
an effector molecule attached to the distal ends of said chains, said effector molecule having binding affinity to a cell receptor, wherein said liposome-bound effector molecule binds to the cell receptor and sterically hinders the cell receptor. - View Dependent Claims (38, 39, 40, 41, 42)
- 10,000 Daltons, and
-
43. A liposome composition for use in treating a condition mediated by binding of a first binding member, which is a pathogen or a cell in the bloodstream, to a second binding member, which is a target cell, comprising
liposomes, each having an outer layer of polyethylene glycol polymer chains having a molecular weight of between about 1,000– - 10,000 Daltons, and
an effector molecule attached to the distal ends of said chains, said effector molecule having binding affinity to a cell receptor, wherein said liposome-bound effector molecule binds to the cell receptor and sterically hinders the cell receptor. - View Dependent Claims (44, 45, 46, 47, 48)
- 10,000 Daltons, and
Specification