Inhibitors of alternative alleles of genes as a basis for cancer therapeutic agents
US6054273A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 11, 1997 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Nov 11, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07K2319/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention is directed to a therapeutic strategy involving (1) identification of alternative alleles of genes coding for protein vital for cell viability or cell growth and the loss of one of those alleles in cancer cells due to loss of heterozygosity (LOH) and (2) the development of inhibitors with high specificity for the single remaining alternative allele of the vital gene retained by the cancer cell after LOH. The inhibitors of this invention are specific for one alternative allele of a gene that codes for a protein vital to cell viability or cell growth. The targeted gene has two alternative alleles in which the inhibitors of this invention blocks only one of the two alternative alleles, still present in the cancer cells. Exposure to the inhibitor inhibits or kills cancer cells which have undergone LOH. Protein is still capable of being expressed in the normal cells exposed to the inhibitor by the unblocked alternative allele. This differential effect of the inhibitor on cancer cells and normal cells accounts for the high therapeutic index of the inhibitors of this invention when used as antineoplastic agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.