Amphiphilic compound assisted nanoparticles for targeted delivery
First Claim
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1. A nanoparticle comprising:
- a first covalent conjugate having the following formula;
lipid—
hydrophilic polymer—
targeting moiety;
a second covalent conjugate having the following formula;
lipid—
hydrophilic polymer;
wherein the hydrophilic polymer of the first and second conjugates is a poly(ethylene glycol) polymer;
a hydrophobic core comprising a polyester and an agent selected from the group consisting of a therapeutic agent, a diagnostic agent, and a prophylactic agent;
an amphiphilic layer around the hydrophobic core, the layer comprising at least three amphiphilic components,wherein a first amphiphilic component of the layer is a phospholipid, andwherein a second amphiphilic component and a third amphiphilic component of the layer are the lipid portions of the first and second covalent conjugates;
a hydrophilic outer layer comprising the hydrophilic polymer—
targeting moiety portion of the first covalent conjugate and the hydrophilic polymer portion of the second covalent conjugate;
wherein the weight ratio of the amphiphilic components of the amphiphilic layer to the polyester is about 0.05 to 0.34; and
wherein the diameter of the nanoparticle is between about 40 and 500 nanometers.
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Abstract
The present invention generally relates to nanoparticles with an amphiphilic component. One aspect of the invention is directed to a method of developing nanoparticles with desired properties. In one set of embodiments, the method includes producing libraries of nanoparticles having highly controlled properties, which can be formed by mixing together two or more macromolecules in different ratios. One or more of the macromolecules may be a polymeric conjugate of a moiety to a biocompatible polymer. In some cases, the nanoparticle may contain a drug. Other aspects of the invention are directed to methods using nanoparticle libraries.
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19 Claims
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1. A nanoparticle comprising:
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a first covalent conjugate having the following formula;
lipid—
hydrophilic polymer—
targeting moiety;a second covalent conjugate having the following formula;
lipid—
hydrophilic polymer;wherein the hydrophilic polymer of the first and second conjugates is a poly(ethylene glycol) polymer; a hydrophobic core comprising a polyester and an agent selected from the group consisting of a therapeutic agent, a diagnostic agent, and a prophylactic agent; an amphiphilic layer around the hydrophobic core, the layer comprising at least three amphiphilic components, wherein a first amphiphilic component of the layer is a phospholipid, and wherein a second amphiphilic component and a third amphiphilic component of the layer are the lipid portions of the first and second covalent conjugates; a hydrophilic outer layer comprising the hydrophilic polymer—
targeting moiety portion of the first covalent conjugate and the hydrophilic polymer portion of the second covalent conjugate;wherein the weight ratio of the amphiphilic components of the amphiphilic layer to the polyester is about 0.05 to 0.34; and wherein the diameter of the nanoparticle is between about 40 and 500 nanometers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification