Methods for haplotyping genomic DNA
US7300755B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | May 12, 2004 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | May 9, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q1/6813
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The present invention provides a novel method for specifically isolating and separating large segments of genomic DNA that can subsequently be used to determine a genomic haplotype. The invention relies on using a solid phase having a flat surface arrayed with oligonucleotides designed to specifically hybridize to each particular haplotype of an individual sample, e.g., oligonucleotides designed to specifically hybridize with each of the two HLA-B haplotypes, HLA-A, HLA-C, HLA-DR, HLA-DQ, and the like. The genomic DNA is contacted and hybridized to the arrayed oligonucleotides to form a genomic DNA/oligonucleotide complex. The excess genomic DNA is washed away and the haplotype separated genomic DNA is denatured from the oligonucleotide probe and collected. The method of the present invention allows for the separation of genomic DNA fragments of between approximately 2 to about 4 megabases (Mb). Separation of the haplotypes of large genomic DNA fragments allows for linkage analysis of other HLA alleles and polymorphisms, microsatellite, SNPs, and the like across a large span of the HLA region, including HLA-A, -B, -C, and HLA-DRB1 regions. This linkage analysis is particularly usef…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.