Method for treating multi-drug resistant tumors
US7303760B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 14, 2003 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Jan 11, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P43/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Methods for administering mitomycin C to a multi-drug resistant cell and for reducing the toxicity of the compound are described. In the methods, mitoymic C is provided in the form of a prodrug conjugate, where the drug is linked to a hydrophobic moiety, such as a lipid, through a cleavable dithiobenzyl linkage. The dithiobenzyl linkage is susceptible to cleavage by mild thiolysis, resulting in release of mitomycin C in its original form. The linkage is stable under nonreducing conditions. The prodrug conjugate can be incorporated into liposomes for administration in vivo and release of mitomycin C in response to endogenous in vivo reducing conditions or in response to administration of an exogenous reducing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.