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Accession IconSRP056477

Distinct brain transcriptome profiles in c9orf72-associated and sporadic ALS

Organism Icon Homo sapiens
Sample Icon 53 Downloadable Samples
Technology Badge IconIllumina HiSeq 2000

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Description
Increasing evidence suggests that defective RNA processing contributes to the development of amyotrophic lateral sclerosis (ALS). This may be especially true for ALS caused by a repeat expansion in C9orf72 (c9ALS), in which the accumulation of RNA foci and dipeptide-repeat proteins are expected to modify RNA metabolism. We report extensive alternative splicing (AS) and alternative polyadenylation (APA) defects in the cerebellum of c9ALS cases (8,224 AS, 1,437 APA), including changes in ALS-associated genes (e.g. ATXN2 and FUS), and cases of sporadic ALS (sALS; 2,229 AS, 716 APA). Furthermore, hnRNPH and other RNA-binding proteins are predicted as potential regulators of cassette exon AS events for both c9ALS and sALS. Co-expression and gene-association network analyses of gene expression and AS data revealed divergent pathways associated with c9ALS and sALS. Overall design: Examination transcriptiome profiles in c9orf72-associated ALS, sporadic ALS and healthy control
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53
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