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Deletion at ITPR1 Underlies Ataxia in Mice and Spinocerebellar Ataxia 15 in Humans

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dc.creator van de Leemput, Joyce
dc.creator Chandran, Jayanth
dc.creator Knight, Melanie A.
dc.creator Holtzclaw, Lynne A.
dc.creator Scholz, Sonja
dc.creator Cookson, Mark R.
dc.creator Houlden, Henry
dc.creator Gwinn-Hardy, Katrina
dc.creator Fung, Hon-Chung
dc.creator Lin, Xian
dc.creator Hernández, Dena
dc.creator Simón-Sánchez, Javier
dc.creator Wood, Nick W.
dc.creator Giunti, Paola
dc.creator Rafferty, Ian
dc.creator Hardy, John
dc.creator Storey, Elsdon
dc.creator McKinlay Gardner, R. J.
dc.creator Forrest, Susan M.
dc.creator Fisher, Elizabeth M. C.
dc.creator Russell, James T.
dc.creator Cai, Huaibin
dc.creator Singleton, Andrew B.
dc.date 2008-04-15T09:01:25Z
dc.date 2008-04-15T09:01:25Z
dc.date 2007-06-22
dc.date.accessioned 2017-01-31T01:02:18Z
dc.date.available 2017-01-31T01:02:18Z
dc.identifier PLoS Genet. 2007 June; 3(6): e108
dc.identifier 1553-7404
dc.identifier http://hdl.handle.net/10261/3579
dc.identifier 10.1371/journal.pgen.0030108
dc.identifier.uri http://dspace.mediu.edu.my:8181/xmlui/handle/10261/3579
dc.description We observed a severe autosomal recessive movement disorder in mice used within our laboratory. We pursued a series of experiments to define the genetic lesion underlying this disorder and to identify a cognate disease in humans with mutation at the same locus. Through linkage and sequence analysis we show here that this disorder is caused by a homozygous in-frame 18-bp deletion in Itpr1 (Itpr1Δ18/Δ18), encoding inositol 1,4,5-triphosphate receptor 1. A previously reported spontaneous Itpr1 mutation in mice causes a phenotype identical to that observed here. In both models in-frame deletion within Itpr1 leads to a decrease in the normally high level of Itpr1 expression in cerebellar Purkinje cells. Spinocerebellar ataxia 15 (SCA15), a human autosomal dominant disorder, maps to the genomic region containing ITPR1; however, to date no causal mutations had been identified. Because ataxia is a prominent feature in Itpr1 mutant mice, we performed a series of experiments to test the hypothesis that mutation at ITPR1 may be the cause of SCA15. We show here that heterozygous deletion of the 5′ part of the ITPR1 gene, encompassing exons 1–10, 1–40, and 1–44 in three studied families, underlies SCA15 in humans.
dc.description Peer reviewed
dc.format 6997480 bytes
dc.format 897488 bytes
dc.format 5269112 bytes
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dc.format 15715 bytes
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dc.language eng
dc.publisher Public Library of Science
dc.relation Publisher’s version
dc.rights openAccess
dc.title Deletion at ITPR1 Underlies Ataxia in Mice and Spinocerebellar Ataxia 15 in Humans
dc.type Artículo


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