Amphiphilic materials and liposome formulations thereof
First Claim
1. A kit comprising, in a suitable container, amphiphilic molecules comprising a hydrophilic component having at least a first and second terminus and at least a first and second hydrophobic moiety separately attached to, or proximal to, said first and second terminus;
- or a liposomal formulation comprising said amphiphilic molecules;
wherein said kit further comprises a selected agent.
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Accused Products
Abstract
Disclosed is a new structural class of amphiphilic molecules which incorporate a hydrophilic material or polymer attached, at spatially distinct sites, to at least two hydrophobic residues. Certain of the amphiphilic molecules comprise a plurality of hydrophobic moieties. All such amphiphilic molecules have a common structural motif and, in contact with water, display surface activity and self-assemble into multimolecular aggregates and liquid crystalline phases. Also disclosed are enhanced stability liposomes that incorporate such amphiphilic molecules via unique interactions, and methods of using such formulations in a variety of applications including drug delivery, nutrition, bio-diagnostics, cosmetics, blood products and related applications.
21 Citations
45 Claims
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1. A kit comprising, in a suitable container, amphiphilic molecules comprising a hydrophilic component having at least a first and second terminus and at least a first and second hydrophobic moiety separately attached to, or proximal to, said first and second terminus;
- or a liposomal formulation comprising said amphiphilic molecules;
wherein said kit further comprises a selected agent.
- or a liposomal formulation comprising said amphiphilic molecules;
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2. A cosmetic formulation comprising, in a cosmetically acceptable base, a population of liposomes or lipid complexes that comprise amphiphilic molecules that comprise a hydrophilic component positioned over at least a portion of the outer surface of the liposome or lipid complex;
- wherein said hydrophilic component has at least a first and second terminus and wherein at least a first and second hydrophobic moiety is separately attached to, or proximal to, said first and second terminus, said first and second hydrophobic moieties extending into the hydrophobic bilayer of the liposome or lipid complex.
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3. A medicinal delivery composition comprising, in a pharmaceutically acceptable vehicle, a population of liposomes or lipid complexes comprising a selected agent;
- wherein said liposomes or lipid complexes comprise amphiphilic molecules that comprise a hydrophilic component positioned over at least a portion of the outer surface of the liposome or lipid complex;
wherein said hydrophilic component has at least a first and second terminus and wherein at least a first and second hydrophobic moiety is separately attached to, or proximal to, said first and second terminus, said first and second hydrophobic moieties extending into the hydrophobic bilayer of the liposome or lipid complex. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 44, 45)
- wherein said liposomes or lipid complexes comprise amphiphilic molecules that comprise a hydrophilic component positioned over at least a portion of the outer surface of the liposome or lipid complex;
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4. A method for providing a selected agent to an animal, comprising administering to said animal a medicinal delivery composition comprising, in a pharmaceutically acceptable vehicle, a population of liposomes or lipid complexes comprising said selected agent;
- wherein said liposomes or lipid complexes comprise amphiphilic molecules that comprise a hydrophilic component positioned over at least a portion of the outer surface of the liposome or lipid complex;
wherein said hydrophilic component has at least a first and second terminus and wherein at least a first and second hydrophobic moiety is separately attached to, or proximal to, said first and second terminus, said first and second hydrophobic moieties extending into the hydrophobic bilayer of the liposome or lipid complex. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- wherein said liposomes or lipid complexes comprise amphiphilic molecules that comprise a hydrophilic component positioned over at least a portion of the outer surface of the liposome or lipid complex;
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21. A method for providing a selected agent to an animal, comprising administering to said animal a medicinal delivery composition comprising, in a pharmaceutically acceptable vehicle, a population of liquid-crystalline multimolecular aggregates comprising said selected agent;
- wherein said liquid-crystalline multimolecular aggregates comprising a plurality of amphiphilic molecules that comprise a hydrophilic component having covalently attached, at spatially distant sites, at least two hydrophobic moieties, wherein the mesophases of said liquid-crystalline multimolecular aggregates, as characterized by X-ray diffraction, include the fluid Lα
, gel Lβ
, and hexagonal mesophases.
- wherein said liquid-crystalline multimolecular aggregates comprising a plurality of amphiphilic molecules that comprise a hydrophilic component having covalently attached, at spatially distant sites, at least two hydrophobic moieties, wherein the mesophases of said liquid-crystalline multimolecular aggregates, as characterized by X-ray diffraction, include the fluid Lα
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39. A formulation comprising a population of liposomes or lipid complexes, wherein said liposomes or lipid complexes comprise amphiphilic molecules that comprise a hydrophilic component positioned over at least a portion of the outer surface of the liposome or lipid complex;
- wherein said hydrophilic component has at least a first and second terminus and wherein at least a first and second hydrophobic moiety is separately attached to, or proximal to, said first and second terminus, said first and second hydrophobic moieties extending into the hydrophobic bilayer of the liposome or lipid complex, and further comprising a selected agent.
- View Dependent Claims (40, 41)
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42. A composition comprising a liquid-crystalline multimolecular aggregate comprising a selected agent;
- wherein said liquid-crystalline multimolecular aggregate comprises a plurality of amphiphilic molecules dispersed in an aqueous solution, said amphiphilic molecules comprising a hydrophilic component having at least a first and second terminus and at least a first and second hydrophobic moiety separately attached to, or proximal to, said first and second terminus of said hydrophilic component.
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43. A composition comprising a liquid-crystalline multimolecular aggregate comprising a selected agent;
- wherein said liquid-crystalline multimolecular aggregate comprises a plurality of amphiphilic molecules dispersed in an aqueous solution, said amphiphilic molecules comprising a hydrophilic component having covalently attached, at spatially distant sites, at least two hydrophobic moieties, wherein the mesophases of said liquid-crystalline multimolecular aggregates, as characterized by X-ray diffraction, include the fluid Lα
, gel Lβ
, and hexagonal mesophases.
- wherein said liquid-crystalline multimolecular aggregate comprises a plurality of amphiphilic molecules dispersed in an aqueous solution, said amphiphilic molecules comprising a hydrophilic component having covalently attached, at spatially distant sites, at least two hydrophobic moieties, wherein the mesophases of said liquid-crystalline multimolecular aggregates, as characterized by X-ray diffraction, include the fluid Lα
Specification