https://scholars.lib.ntu.edu.tw/handle/123456789/519587
標題: | Hereditary sensory neuropathy is caused by a mutation in the delta subunit of the cytosolic chaperonin-containing t-complex peptide-1 (Cct4) gene | 作者: | MING-JEN LEE Stephenson D.A. Groves M.J. Sweeney M.G. Davis M.B. An S.-F. Houlden H. Salih M.A.M. Timmerman V. de Jonghe P. Auer-Grumbach M. Di Maria E. Scaravilli F. Wood N.W. Reilly M.M. |
公開日期: | 2003 | 卷: | 12 | 期: | 15 | 起(迄)頁: | 1917-1925 | 來源出版物: | Human Molecular Genetics | 摘要: | A spontaneous autosomal recessive mutation was identified in the Sprague-Dawley rat strain with an early onset sensory neuropathy. The main clinical features of the mutation (mutilated foot, mf), detectable shortly after birth, include ataxia, insensitivity to pain and foot ulceration. The pathological features include a severe reduction in the number of sensory ganglia and fibres. This mutant is therefore an excellent model for human hereditary sensory neuropathies. Here, we demonstrate that the mf locus maps to the distal end of rat chromosome 14, a region syntenic to human 2p13-p16 and proximal mouse 11. Sequence analysis of four candidate genes in this interval revealed a 1349G>A mutation in the chaperonin (delta) subunit 4 (Cct4) gene associated with the mf mutant. This change resulted in the substitution of a highly conserved cysteine for tyrosine at amino acid 450. Although we did not identify a mutation in the human CCT4 gene in a set of HSN patients, this result clearly demonstrates the pathological consequences of a defect in Cct4, a subunit of CCT (cytosolic chaperonin-containing t-complex peptide-1), involved in folding tubulin, actin and other cytosolic proteins. This is the first report of a mutation in a molecular chaperonin causing a hereditary neuropathy and raises the possibility that mis-folding proteins may be a cause of this group of neuropathies. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-10744228985&doi=10.1093%2fhmg%2fddg198&partnerID=40&md5=7078b3376f139eac2b737301a9fc96ed https://scholars.lib.ntu.edu.tw/handle/123456789/519587 |
ISSN: | 0964-6906 | DOI: | 10.1093/hmg/ddg198 | SDG/關鍵字: | actin; CCT4 protein, human; cell protein; chaperonin; cysteine; primer DNA; protein subunit; tubulin; tyrosine; amino acid sequence; amino acid substitution; animal; animal experiment; animal model; article; ataxia; autosomal recessive inheritance; chromosome 14; chromosome 2; chromosome 2p; chromosome map; clinical article; clinical feature; comparative study; congenital analgesia; controlled study; cytosol; disease model; DNA sequence; female; foot ulcer; gene expression; gene locus; gene mapping; gene mutation; genetic association; genetic conservation; genetic identification; genetic linkage; genetics; human; male; missense mutation; molecular genetics; neuropathy; nonhuman; Northern blotting; nucleotide sequence; pathogenesis; pathophysiology; perinatal period; priority journal; promoter region; protein folding; rat; rat strain; recessive gene; reverse transcription polymerase chain reaction; sensory ganglion; sensory nerve cell; sequence analysis; synteny; Amino Acid Sequence; Animals; Blotting, Northern; Chaperonins; Chromosome Mapping; Chromosomes, Human, Pair 2; Disease Models, Animal; DNA Primers; Gene Expression; Genes, Recessive; Hereditary Sensory and Autonomic Neuropathies; Humans; Lod Score; Molecular Sequence Data; Mutation, Missense; Rats; Rats, Mutant Strains; Rats, Sprague-Dawley; Reverse Transcriptase Polymerase Chain Reaction; Sequence Analysis, DNA; Animalia |
顯示於: | 醫學系 |
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