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Details for Patent: 5,650,156

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Details for Patent: 5,650,156

Title: Methods for in vivo delivery of nutriceuticals and compositions useful therefor
Abstract:In accordance with the present invention, there are provided compositions useful for the in vivo delivery of a biologic, wherein the biologic is associated with a polymeric shell formulated from a biocompatible material. The biologic can be associated with the polymeric shell itself, and/or the biologic, optionally suspended/dispersed in a biocompatible dispersing agent, can be encased by the polymeric shell. In another aspect, the biologic associated with polymeric shell is administered to a subject, optionally dispersed in a suitable biocompatible liquid.
Inventor(s): Grinstaff; Mark W. (Pasadena, CA), Soon-Shiong; Patrick (Los Angeles, CA), Wong; Michael (Champagne, IL), Sandford; Paul A. (Los Angeles, CA), Suslick; Kenneth S. (Champagne, IL), Desai; Neil P. (Los Angeles, CA)
Assignee: Vivorx Pharmaceuticals, Inc. (Santa Monica, CA)
Filing Date:Jun 07, 1995
Application Number:08/482,272
Claims:1. A method for the preparation of articles for in vivo delivery of nutriceuticals, said method comprising subjecting aqueous medium containing biocompatible material capable of being crosslinked by disulfide bonds and a nutriceutical to high intensity ultrasound conditions for a time sufficient to promote crosslinking of said biocompatible material by disulfide bonds;

wherein said nutriceutical is substantially contained within a polymeric shell, and

wherein the largest cross-sectional dimension of said shell is no greater than about 10 microns.

2. The method according to claim 1, wherein said biocompatible material is a naturally occurring polymer, a synthetic polymer, or a combination thereof,

wherein said polymer, prior to crosslinking, has covalently attached thereto sulfhydryl groups or disulfide linkages.

3. The method according to claim 1, wherein said nutriceutical is selected from amino acids, sugars, proteins, carbohydrates, fat-soluble vitamins, fat, or combinations of any two or more thereof.

4. The method according to claim 1, wherein said nutriceutical within said shell is dissolved or suspended in a biocompatible dispersing agent.

5. A method for the delivery of a nutriceutical to a subject in need thereof, said method comprising administering to said subject the articles prepared by the method of claim 1 by oral, intravenous, subcutaneous, intraperitoneal, intrathecal, intramuscular, intracranial, inhalational, topical, transdermal, suppository (rectal), or pessary (vaginal) routes of administration.

6. A method for the preparation of articles for in vivo delivery of nutriceuticals, said method comprising subjecting aqueous medium containing a nutriceutical capable of being crosslinked by disulfide bonds to high intensity ultrasound conditions for a time sufficient to promote crosslinking of said biocompatible material by disulfide bonds to form a polymeric shell;

wherein the largest cross-sectional dimension of said shell is no greater than about 10 microns.

7. The method according to claim 6, wherein said nutriceutical is a naturally occurring polymer, a synthetic polymer, or a combination thereof,

wherein said polymer, prior to crosslinking, has covalently attached thereto sulfhydryl groups or disulfide linkages.

8. The method according to claim 6, wherein said nutriceutical is selected from amino acids, sugars, proteins, carbohydrates, fat-soluble vitamins, fat, or combinations of any two or more thereof.

9. A method for the delivery of a nutriceutical to a subject in need thereof, said method comprising administering to said subject the articles prepared by the method of claim 1 by oral, intravenous, subcutaneous, intraperitoneal, intrathecal, intramuscular, intracranial, inhalational, topical, transdermal, suppository (rectal), or pessary (vaginal) routes of administration.
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