The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 1997
Filed:
Mar. 21, 1995
Tapas K DasGupta, River Forest, IL (US);
John M Pezzuto, River Forest, IL (US);
Board of Trustees of the University of Illinois, Urbana, IL (US);
Abstract
A composition and method of inhibiting tumor growth and treating malignant melanoma without toxic side effects are disclosed. Betulinic acid or a betulinic acid derivative is the active compound of the composition, which is topically applied to the situs of tumor. Betulinic acid is obtained by the steps of preparing an extract from the stem bark of Ziziphus mauritiana to mediate selective cytotoxic profile against human melanoma in the subject panel of human cancer cell lines, conducting a bioassay-directed fractionation based on the profile of biological activity using cultured human melanoma cells as the monitor, and obtaining betulinic acid.