Functionalized Magnetic Nanoparticles and Methods of Use Thereof
First Claim
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1. A pharmaceutical composition comprising:
- a) a functionalized magnetic nanoparticle (MNP) comprising a functional group that has differential affinity for a tissue in the brain, wherein said functionalized magnetic nanoparticle is capable, when introduced into the bloodstream of a mammalian subject, of crossing the blood-brain barrier of said subject and binding specifically to the brain tissue; and
b) a pharmaceutically acceptable carrier.
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Abstract
The present invention provides functionalized magnetic nanoparticles comprising a functional group, which functionalized magnetic nanoparticles exhibit differential binding to a tissue, indulging brain tissue, bone, and vascular tissues. The present invention further provides compositions, including pharmaceutical compostions, comprising a subject functionalized magnetic nanoparticle. The present invention further provides diagnostic and research methods including use of subject functionized magnetic nanoparticles. The present invention further provides a magnetic resonance imaging (MRI)-visible drug delivery system; drugs using MRI, as well as tissue-specific drug delivery.
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Citations
35 Claims
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1. A pharmaceutical composition comprising:
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a) a functionalized magnetic nanoparticle (MNP) comprising a functional group that has differential affinity for a tissue in the brain, wherein said functionalized magnetic nanoparticle is capable, when introduced into the bloodstream of a mammalian subject, of crossing the blood-brain barrier of said subject and binding specifically to the brain tissue; and b) a pharmaceutically acceptable carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 34, 35)
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16. A pharmaceutical composition comprising:
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a) a functionalized magnetic nanoparticle comprising a functional group that has differential affinity for an inflamed vascular tissue that is at risk of restenosis, wherein said functionalized magnetic nanoparticle is capable, when injected into the bloodstream of a mammalian subject, of binding specifically to the inflamed vascular tissue; and b) a pharmaceutically acceptable carrier.
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17. A pharmaceutical composition comprising:
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a) a functionalized magnetic nanoparticle comprising a functional group that has differential affinity for a diseased bone tissue, and wherein said functionalized magnetic nanoparticle is capable, when injected into the bloodstream of a mammalian subject, of binding specifically to the diseased bone tissue; and b) a pharmaceutically acceptable carrier. - View Dependent Claims (18)
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19. A pharmaceutical composition comprising:
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a) a magnetic nanoparticle that is derivatized with a functional group that has differential affinity for epileptic tissue in the brain, and wherein said magnetic nanoparticle is capable, when injected into the bloodstream of a mammalian subject, of crossing the blood-brain barrier of said subject and binding specifically to epileptic tissue in the brain; and b) a pharmaceutically acceptable carrier. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A method of diagnosing a brain disorder, the method comprising:
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a) administering to a mammalian subject a composition comprising a functionalized magnetic nanoparticle, wherein said functionalized magnetic nanoparticle comprises a functional group that has differential affinity for a tissue in the brain that is affected by the brain disorder, and wherein said functionalized magnetic nanoparticle is capable, when injected into the bloodstream of the mammalian subject, of crossing the blood-brain barrier of said subject; and b) detecting the presence of the functionalized magnetic nanoparticle in the brain. - View Dependent Claims (27, 28, 29)
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30. A method of detecting a vascular tissue that is at risk of restenosis, the method comprising:
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a) administering to a mammalian subject a composition comprising a functionalized magnetic nanoparticle, wherein said functionalized magnetic nanoparticle comprises a functional group that has differential affinity for an inflamed vascular tissue, and wherein said functionalized magnetic nanoparticle is capable, when injected into the bloodstream of the mammalian subject, of binding specifically to the inflamed vascular tissue; and b) detecting the presence of the functionalized magnetic nanoparticle in the vascular tissue.
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31. A method of detecting a diseased bone tissue in a mammalian subject, the method comprising:
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a) administering to a mammalian subject a composition comprising a functionalized magnetic nanoparticle, wherein said functionalized magnetic nanoparticle comprises a functional group that has differential affinity for diseased bone tissue, and wherein said functionalized magnetic nanoparticle is capable, when injected into the bloodstream of the mammalian subject, of binding specifically to the diseased bone tissue; and b) detecting the presence of the functionalized magnetic nanoparticle in the bone tissue.
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32. A method of identifying an agent that treats a brain disorder, the method comprising:
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administering a test agent to a non-human animal model of a brain disorder; and determining the effect, if any, of the test agent on a neurological feature of the brain disorder, wherein said determining is carried out by;
i) administering to the non-human animal model a composition comprising a functionalized magnetic nanoparticle, wherein the functionalized magnetic nanoparticle exhibits differential binding to a diseased brain tissue affected by or associated with the neurological disorder; and
ii) detecting the functionalized magnetic nanoparticle in the brain of the animal. - View Dependent Claims (33)
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Specification