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 language | English |
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Pages (from-to) | 166-70 |
Number of pages | 5 |
Journal | Nature Genetics |
Volume | 1 |
Issue number | 3 |
DOIs | |
Publication status | Published - 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.