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Rapid typing of DNA sequence polymorphism at the HLA-DRB1 locus using the polymerase chain reaction and
S J Scharf1, R L Griffith, H A Erlich
1Department of Human Genetics, Cetus Corporation, Emeryville, California 94608.
Abstract:
An HLA-DR typing system that uses sequence-specific oligonucleotide (SSO) probes conjugated to horseradish peroxidase (HRP) for analyzing DRB alleles amplified by the polymerase chain reaction has been developed. Using 25 HRP-SSO probes and two primer pairs for generic and for DRB1 locus-specific amplification, we can distinguish 31 of 34 HLA-DRB1 alleles. This procedure is suitable for typing heterozygous samples from a variety of sources, including cDNA templates, and can detect in a simple and rapid dot-blot format allelic variants not distinguishable by serological methods. It should prove valuable for tissue typing, determining individual identity, and studies of disease susceptibility.