Triplet repeat sequences in human DNA can be detected by hybridization to a synthetic (5'-CGG-3')17 oligodeoxyribonucleotide.
The seemingly autonomous amplification of naturally occurring triplet repeat sequences in the human genome has been implicated in the causation of human genetic disease, such as the fragile X (Martin-Bell) syndrome, myotonic dystrophy (Curshmann-Steinert), spinal and bulbar muscular atrophy (Kennedy's disease) and Huntington's disease. The molecular mechanisms underlying these triplet amplifications are still unknown. We demonstrate here that a synthetic (CGG)17 oligodeoxyribonucleotide can be utilized as hybridization probe to visualize some of the triplet repeats in the human genome. This technique may help in studies aimed at the elucidation of the amplification mechanism.
Behn-Krappa
A
A
Institute for Genetics, University of Cologne, Germany.
Mollenhauer
J
J
Doerfler
W
W
D001345:Autoradiography / Q000379:methods; D001483:Base Sequence; D015139:Blotting, Southern / Q000379:methods; D004247:DNA / Q000737:chemistry*; D030342:Genetic Diseases, Inborn / Q000235:genetics; D015894:Genome, Human; D006801:Humans; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization / Q000379:methods; D009838:Oligodeoxyribonucleotides / Q000138:chemical synthesis; D010761:Phosphorus Radioisotopes; D012091:Repetitive Sequences, Nucleic Acid; D015183:Restriction Mapping
D009838:Oligodeoxyribonucleotides; D010761:Phosphorus Radioisotopes; D004247:DNA