Multicomponent assemblies having enhanced binding properties for diagnosis and therapy
First Claim
1. A method of targeting an effector molecule to a target site in a patient, said method comprising:
- providing to said patient an effective amount of a physiologically acceptable composition comprising an organized mobile multicomponent conjugate (OMMC) assembly comprising a lamellar structure selected from at least one of salts of docosanoic acid or salts of octacosanoic acid;
said lamellar structure defining a void and having incorporated at least two binding compounds B1 and B2 independently selected from at least one of amino acids, peptides (1–
20 amino acids), peptidomimics, monosaccharides, oligosaccharides (1–
10), glycomimics, glycopeptides, anionic compounds, C- or O-monosaccharides and glycosides, flavonoids, isoflavonones, or C- or O-glucosides;
B1 bound to said structure by anchor region A1 and B1 and A1 linked via linker L1 wherein A1 is a succinic acid ester of PEG[50] stearate L1 and B2 bound to said structure by anchor region A2 and B2 and A2 linked via linker L2 wherein A2 is a fucosuccinamide ester of a PEG[50] stearate L2, andan effector molecule selected from an echogenic agent selected from the group consisting of perfluoropropane, perfluorobutane, sulfur hexafluoride, tetrafluoromethane, hexafluoroethane, octafluoropropane, decafluorbutane , dodecafluorpentane, and perfluorohexane;
a radionuclide selected from the group consisting of I-123, I-131, Tc-99m, Re-186, Re-188, Sm-152, Ho-155, Bi-202, and Lu-157;
a paramagnetic agent selected from the group consisting of Gd-DTPA, Gd-DOTA, Gd-DTPA-bis(methoxyethyl)amide, and Mn-EDTA;
a cytotoxcic agent selected from the group consisting of fluorouracil, fluorouridine, sulfisoxazole, N′
-(w-thiazolyl)sulfanilamide, sulfmethoxazole, and sulfisomidine; and
an optical agent selected from the group consisting of fluorescein and indocyanine green,said B1 and B2 binding to at least first and second affinity sites in said target site, wherein a position of B1 and B2 relatively self-adjust to form an OMMO ensemble resulting in cooperative binding of B1 and B2 to said affinity sites, wherein said effector molecule is provided to the target site.
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Abstract
An organized mobile multicomponent conjugate (OMMC) and method of using to enhance binding of weakly binding compounds to a target. A lamellar structure containing at least two binding compounds is assembled under conditions in which the binding compounds self-regulate in or on the lamellar structure, forming a cooperative ensemble that is capable of binding with enhanced affinity to a complementary affinity site on a target. Each binding compound is bound to the lamellar surface, and may be connected by a linker. The OMMC may contain an effector molecule, such as a diagnostic or therapeutic agent, for administration to a patent who is then diagnosed or treated using the effector molecule.
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Citations
20 Claims
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1. A method of targeting an effector molecule to a target site in a patient, said method comprising:
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providing to said patient an effective amount of a physiologically acceptable composition comprising an organized mobile multicomponent conjugate (OMMC) assembly comprising a lamellar structure selected from at least one of salts of docosanoic acid or salts of octacosanoic acid; said lamellar structure defining a void and having incorporated at least two binding compounds B1 and B2 independently selected from at least one of amino acids, peptides (1–
20 amino acids), peptidomimics, monosaccharides, oligosaccharides (1–
10), glycomimics, glycopeptides, anionic compounds, C- or O-monosaccharides and glycosides, flavonoids, isoflavonones, or C- or O-glucosides;B1 bound to said structure by anchor region A1 and B1 and A1 linked via linker L1 wherein A1 is a succinic acid ester of PEG[50] stearate L1 and B2 bound to said structure by anchor region A2 and B2 and A2 linked via linker L2 wherein A2 is a fucosuccinamide ester of a PEG[50] stearate L2, and an effector molecule selected from an echogenic agent selected from the group consisting of perfluoropropane, perfluorobutane, sulfur hexafluoride, tetrafluoromethane, hexafluoroethane, octafluoropropane, decafluorbutane , dodecafluorpentane, and perfluorohexane;
a radionuclide selected from the group consisting of I-123, I-131, Tc-99m, Re-186, Re-188, Sm-152, Ho-155, Bi-202, and Lu-157;
a paramagnetic agent selected from the group consisting of Gd-DTPA, Gd-DOTA, Gd-DTPA-bis(methoxyethyl)amide, and Mn-EDTA;
a cytotoxcic agent selected from the group consisting of fluorouracil, fluorouridine, sulfisoxazole, N′
-(w-thiazolyl)sulfanilamide, sulfmethoxazole, and sulfisomidine; and
an optical agent selected from the group consisting of fluorescein and indocyanine green,said B1 and B2 binding to at least first and second affinity sites in said target site, wherein a position of B1 and B2 relatively self-adjust to form an OMMO ensemble resulting in cooperative binding of B1 and B2 to said affinity sites, wherein said effector molecule is provided to the target site. - 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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Specification