Methods for identifying genes amplified in cancer cells
US5776683A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Jul 11, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K48/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
New methods are disclosed for detecting cancer associated genes, and obtaining corresponding cDNA fragments. The methods involve supplying RNA preparations from control cells, and from a plurality of different cancer cells that share a duplicated or deleted gene in the same region of a chromosome. Amplified cDNA copies are displayed, and then selected based on differences in abundance of RNA between preparations. Optional additional screening steps involve surveying panels of cancer cells using the cDNA for RNA overabundance with or without gene duplication. By applying these methods, cDNA sequences derived from four novel genes associated with breast cancer were obtained and characterized. Each of the genes was duplicated in about 60% of the cancer cell lines tested; while other cells showed RNA overabundance without gene duplication. Genes with these properties are particularly useful in cancer diagnosis and treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.