Article (Scientific journals)
Mutations in PYCR1 cause cutis laxa with progeroid features.
Reversade, Bruno; Escande-Beillard, Nathalie; Dimopoulou, Aikaterini et al.
2009In Nature Genetics, 41 (9), p. 1016-21
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Keywords :
Base Sequence; Case-Control Studies; Child, Preschool; Chromosomes, Human, Pair 17; Consanguinity; Corpus Callosum/abnormalities; Cutis Laxa/etiology/genetics/metabolism; Female; Fibroblasts/metabolism; Frameshift Mutation; Gene Deletion; Genes, Recessive; Genetic Markers; Homozygote; Humans; Infant; Infant, Newborn; Male; Mental Retardation/genetics; Molecular Sequence Data; Mutation; Mutation, Missense; Pedigree; Physical Chromosome Mapping; Polymorphism, Single Nucleotide; Pyrroline Carboxylate Reductases/genetics/metabolism; Skin/cytology/metabolism/ultrastructure
Abstract :
[en] Autosomal recessive cutis laxa (ARCL) describes a group of syndromal disorders that are often associated with a progeroid appearance, lax and wrinkled skin, osteopenia and mental retardation. Homozygosity mapping in several kindreds with ARCL identified a candidate region on chromosome 17q25. By high-throughput sequencing of the entire candidate region, we detected disease-causing mutations in the gene PYCR1. We found that the gene product, an enzyme involved in proline metabolism, localizes to mitochondria. Altered mitochondrial morphology, membrane potential and increased apoptosis rate upon oxidative stress were evident in fibroblasts from affected individuals. Knockdown of the orthologous genes in Xenopus and zebrafish led to epidermal hypoplasia and blistering that was accompanied by a massive increase of apoptosis. Our findings link mutations in PYCR1 to altered mitochondrial function and progeroid changes in connective tissues.
Disciplines :
Genetics & genetic processes
Author, co-author :
Reversade, Bruno
Escande-Beillard, Nathalie
Dimopoulou, Aikaterini
Fischer, Bjorn
Chng, Serene C
Li, Yun
Shboul, Mohammad
Tham, Puay*-Yoke
Kayserili, Hulya
Al-Gazali, Lihadh
Shahwan, Monzer
Brancati, Francesco
Lee, Hane
O'Connor, Brian D
Schmidt-von Kegler, Mareen
Merriman, Barry
Nelson, Stanley F
Masri, Amira
Alkazaleh, Fawaz
Guerra, Deanna
Ferrari, Paola
Nanda, Arti
Rajab, Anna
Markie, David
Gray, Mary
Nelson, John
Grix, Arthur
Sommer, Annemarie
Savarirayan, Ravi
Janecke, Andreas R
Steichen, Elisabeth
Sillence, David
Hausser, Ingrid
Budde, Birgit
Nurnberg, Gudrun
Nurnberg, Peter
Seemann, Petra
Kunkel, Desiree
Zambruno, Giovanna
Dallapiccola, Bruno
Schuelke, Markus
Robertson, Stephen
Hamamy, Hanan
Wollnik, Bernd
Van Maldergem, Lionel ;  Centre Hospitalier Universitaire de Liège - CHU > Génétique
Mundlos, Stefan
Kornak, Uwe
More authors (37 more) Less
Language :
English
Title :
Mutations in PYCR1 cause cutis laxa with progeroid features.
Publication date :
2009
Journal title :
Nature Genetics
ISSN :
1061-4036
eISSN :
1546-1718
Publisher :
Nature Publishing Group, New York, United States - New York
Volume :
41
Issue :
9
Pages :
1016-21
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 02 February 2010

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