The peripheral myelin gene PMP-22/GAS-3 is duplicated in Charcot-Marie-Tooth disease type 1A

L J Valentijn, P A Bolhuis, I Zorn, J E Hoogendijk, N van den Bosch, G W Hensels, V P Stanton, D E Housman, K H Fischbeck, D A Ross

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Charcot-Marie-Tooth disease type 1A (CMT1A) is associated with a DNA duplication at chromosome 17p11.2. In view of the point mutation in the gene for peripheral myelin protein pmp-22/gas-3 in Trembler mice, a murine model for CMT1A, we have analysed whether this gene is altered in CMT1A. Here we show that the human homologue of the murine pmp-22 gene is located within the CMT1A DNA duplication, which is a direct repeat and does not interrupt the coding region of PMP-22. Expression of PMP-22 in CMT1A fibroblasts is similar to expression in control fibroblasts. Increased gene dosage or altered PMP-22 expression in the peripheral nervous system are therefore possible mechanisms by which PMP-22 is involved in CMT1A.

Original languageEnglish
Pages (from-to)166-70
Number of pages5
JournalNature Genetics
Volume1
Issue number3
DOIs
Publication statusPublished - Jun 1992

Keywords

  • Base Sequence
  • Charcot-Marie-Tooth Disease
  • DNA
  • Gene Expression
  • Humans
  • Molecular Sequence Data
  • Multigene Family
  • Myelin Proteins
  • Polymerase Chain Reaction
  • Repetitive Sequences, Nucleic Acid
  • Journal Article
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

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