Site specific binding system, imaging compositions and methods
First Claim
1. A method for enhanced magnetic resonance imaging of a target tissue in a subject in vivo which method comprisesdetecting a magnetic resonance image of said target tissue wherein said target tissue is bound to a ligand specific for said target tissue and wherein said ligand is directly coupled to lipid-coated particles consisting of liquid perfluorocarbon, said coated particles contained in an emulsion, which method further comprises, prior to said detecting, administering said emulsion to said subject.
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Abstract
A method for ligand-based binding of lipid encapsulated particles to molecular epitopes on a surface in vivo or in vitro comprises sequentially administering (a) a site specific ligand activated with a biotin activating agent; (b) an avidin activating agent; and (c) lipid encapsulated particles activated with a biotin activating agent, whereby the ligand is conjugated to the particles through an avidin-biotin interaction and the resulting conjugate is bound to the molecular epitopes on such surface. The conjugate is effective for imaging by x-ray, ultrasound, magnetic resonance or positron emission tomography. Compositions for use in ultrasonic imaging of natural or synthetic surfaces and for enhancing the acoustic reflectivity thereof are also disclosed.
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Citations
12 Claims
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1. A method for enhanced magnetic resonance imaging of a target tissue in a subject in vivo which method comprises
detecting a magnetic resonance image of said target tissue wherein said target tissue is bound to a ligand specific for said target tissue and wherein said ligand is directly coupled to lipid-coated particles consisting of liquid perfluorocarbon, said coated particles contained in an emulsion, which method further comprises, prior to said detecting, administering said emulsion to said subject.
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5. A method for enhanced magnetic resonance imaging of a target tissue in a subject in vivo which method comprises administering to said subject an emulsion comprising a ligand specific for said target tissue, said ligand directly coupled to lipid-coated particles consisting of liquid perfluorocarbon, and
detecting a magnetic resonance image of said target tissue wherein said target tissue is bound to said ligand and wherein said ligand is directly coupled to lipid-coated particles contained in said emulsion.
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9. A method for magnetic resonance imaging of a target tissue in a subject in vivo which method comprises
detecting a magnetic resonance image of said target tissue wherein said target tissue is bound to a ligand specific for said target tissue and wherein said ligand is directly coupled to lipid-coated particles consisting of liquid perfluorocarbon, said coated particles contained in an emulsion, wherein said subject has been administered said emulsion prior to said detecting.
Specification