Therapeutic liposome composition and method of preparation
First Claim
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1. Reagents for use in preparing a therapeutic liposome composition sensitized to a target cell, said reagents comprising a liposomal composition composed of pre-formed liposomes having an entrapped therapeutic agent;
- and 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 the therapeutic, target-cell sensitized liposome composition is formed by incubating the liposomal composition with a selected conjugate.
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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.
39 Citations
56 Claims
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1. Reagents for use in preparing a therapeutic liposome composition sensitized to a target cell, said reagents comprising
a liposomal composition composed of pre-formed liposomes having an entrapped therapeutic agent; - and
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 the therapeutic, target-cell sensitized liposome composition is formed by incubating the liposomal composition with a selected conjugate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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- 21. A plurality of targeting conjugates for use in preparing a targeted, therapeutic liposome composition, each conjugate composed of a (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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33. A method of formulating a therapeutic liposome composition having sensitivity to a target cell, comprising
selecting a liposomal composition composed of pre-formed liposomes having an entrapped therapeutic agent; -
selecting from a plurality of targeting conjugates a targeting 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; and
combining the selected liposome formulation and the selected targeting conjugate to form said therapeutic, target-cell sensitive liposome composition. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification