Therapeutic liposome composition and method of preparation
First Claim
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1. A composition comprising reagents for use in preparing a therapeutic liposome composition sensitized to a target cell, said reagents comprised of (a) a liposomal composition composed of pre-formed liposomes having an entrapped therapeutic agent;
- and (b) a plurality of conjugates, each conjugate composed of (i) a lipid having a polar head group and a hydrophobic tail, (ii) a hydrophilic polymer having a proximal end and a distal end, said polymer attached at its proximal end to the head group of the lipid, and (iii) a targeting ligand attached to the distal end of the polymer;
wherein said reagents are mixed to form the therapeutic, target-cell sensitized liposome composition.
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Abstract
Reagents for use in preparing a therapeutic liposome composition sensitized to a target cell are described. The reagents include a liposomal composition composed of pre-formed liposomes having an entrapped therapeutic agent and a plurality of targeting conjugates composed of a lipid, a hydrophilic polymer and a targeting ligand. The therapeutic, target-cell sensitized liposome composition is formed by incubating the liposomal composition with a selected conjugate.
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Citations
60 Claims
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1. A composition comprising reagents for use in preparing a therapeutic liposome composition sensitized to a target cell, said reagents comprised of (a) a liposomal composition composed of pre-formed liposomes having an entrapped therapeutic agent;
- and (b) a plurality of conjugates, each conjugate composed of (i) a lipid having a polar head group and a hydrophobic tail, (ii) a hydrophilic polymer having a proximal end and a distal end, said polymer attached at its proximal end to the head group of the lipid, and (iii) a targeting ligand attached to the distal end of the polymer;
wherein said reagents are mixed to form the therapeutic, target-cell sensitized liposome composition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- and (b) a plurality of conjugates, each conjugate composed of (i) a lipid having a polar head group and a hydrophobic tail, (ii) a hydrophilic polymer having a proximal end and a distal end, said polymer attached at its proximal end to the head group of the lipid, and (iii) a targeting ligand attached to the distal end of the polymer;
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21-56. -56 (Canceled)
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57. A therapeutic liposome composition having sensitivity to a target cell, comprising
pre-formed liposomes having an entrapped therapeutic agent; - and
one or more conjugates composed of (i) a lipid having a polar head group and a hydrophobic tail, (ii) a hydrophilic polymer having a proximal end and a distal end, said polymer attached at its proximal end to the head group of the lipid, and (iii) a targeting ligand attached to the distal end of the polymer;
wherein said pre-formed liposomes and said one or more conjugates are in individual containers prior to formation of the therapeutic liposome composition having sensitivity to a target cell. - View Dependent Claims (58, 59, 60)
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Specification