Detection of trinucleotide expansion in neurodegenerative disease by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry

Genet Anal. 1999 Mar;15(1):25-31. doi: 10.1016/s1050-3862(98)00034-5.

Abstract

Genotyping of the dentatorubral-pallidoluysian atrophy (DRPLA) locus in six patient samples, representing four normal individuals and two DRPLA patients, was successfully obtained using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). DRPLA is a dominantly inherited neurodegenerative disorder associated with the expansion of an unstable trinucleotide (CAG) repeat. The accurate determination of repeat length utilizing MALDI supports the use of this methodology for the analysis of genes containing unstable CAG trinucleotide repeats.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Alleles
  • Chromosomes, Human, Pair 12
  • Genotype
  • Humans
  • Neurodegenerative Diseases / genetics*
  • Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / methods*
  • Trinucleotide Repeat Expansion / genetics*