Compositions and methods for altering the biodistribution of biological agents
First Claim
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1. A method for delivering a biological agent to specific tissue sites comprising:
- forming a solution of a plurality of albumin encapsulated, insoluble gas-filled microbubbles, said microbubbles associated to said biological agent;
administering said solution to an animal;
so that said protein directs the microbubble-associated agent to sites of bioprocessing of said protein and upon dissipation of the microbubble releases said agent;
wherein said biological agent is selected from the group consisting of naproxen, piroxicam, warfarin, furosemide, phenylbutazone, valproic acid, sulfisoxazole, ceftriaxone, and miconazole.
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Abstract
This invention relates to a new and improved pharmaceutical composition and method for delivery of therapeutic or bioactive agents. The methods and composition of the invention can be used with several therapeutic or bioactive agents and can achieve site-specific delivery of a therapeutic or biologically-active substance. This can allow for lower doses and for improved efficacy with drugs, particularly agents such as oligonucleotides which are plagued with problems in achieving therapeutic levels at targeted sites.
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14 Claims
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1. A method for delivering a biological agent to specific tissue sites comprising:
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forming a solution of a plurality of albumin encapsulated, insoluble gas-filled microbubbles, said microbubbles associated to said biological agent; administering said solution to an animal;
so that said protein directs the microbubble-associated agent to sites of bioprocessing of said protein and upon dissipation of the microbubble releases said agent;wherein said biological agent is selected from the group consisting of naproxen, piroxicam, warfarin, furosemide, phenylbutazone, valproic acid, sulfisoxazole, ceftriaxone, and miconazole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14)
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8. A composition for delivery of a biological agent to a target site comprising:
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an aqueous suspension comprising a plurality of albumin encapsulated insoluble gas-filled microbubbles and; a biological agent selected from the group consisting of naproxen, piroxicam, warfarin, furosemide, phenylbutazone, valproic acid, sulfisoxazole, ceftriaxone, and miconazole associated to said albumin. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification