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Details

Autor(en) / Beteiligte
Titel
Dissecting the Causal Mechanism of X-Linked Dystonia-Parkinsonism by Integrating Genome and Transcriptome Assembly
Ist Teil von
  • Cell, 2018-02, Vol.172 (5), p.897-909.e21
Ort / Verlag
United States: Elsevier Inc
Erscheinungsjahr
2018
Link zum Volltext
Quelle
Free E-Journal (出版社公開部分のみ)
Beschreibungen/Notizen
  • X-linked Dystonia-Parkinsonism (XDP) is a Mendelian neurodegenerative disease that is endemic to the Philippines and is associated with a founder haplotype. We integrated multiple genome and transcriptome assembly technologies to narrow the causal mutation to the TAF1 locus, which included a SINE-VNTR-Alu (SVA) retrotransposition into intron 32 of the gene. Transcriptome analyses identified decreased expression of the canonical cTAF1 transcript among XDP probands, and de novo assembly across multiple pluripotent stem-cell-derived neuronal lineages discovered aberrant TAF1 transcription that involved alternative splicing and intron retention (IR) in proximity to the SVA that was anti-correlated with overall TAF1 expression. CRISPR/Cas9 excision of the SVA rescued this XDP-specific transcriptional signature and normalized TAF1 expression in probands. These data suggest an SVA-mediated aberrant transcriptional mechanism associated with XDP and may provide a roadmap for layered technologies and integrated assembly-based analyses for other unsolved Mendelian disorders. [Display omitted] •Genome assembly narrows the causal XDP locus to TAF1•An XDP-specific SVA insertion causes intron retention and reduced expression of TAF1•CRISPR/Cas9 excision of SVA rescues aberrant splicing and TAF1 expression in XDP•Expression profiling implicates neurodevelopment and dystonia pathways in XDP A Mendelian form of dystonia arises from altered splicing and intron retention within a general transcription factor.

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