Evidence map›Paper›PMID 21550405›Full record

ArticleNeurobiology of disease2011

Splice isoform-specific suppression of the Cav2.1 variant underlying spinocerebellar ataxia type 6.

Wei-Ling Tsou, Bing-Wen Soong, Henry L Paulson, Edgardo Rodríguez-Lebrón

Open access · greenAbstract read
In one paragraph

Article in Neurobiology of disease, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Spinocerebellar ataxia type 6 protein aggregates cause deficits in motor learning and cerebellar plasticity.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Silencing mutant ATXN3 expression resolves molecular phenotypes in SCA3 transgenic mice.Molecular therapy : the journal of the American Society of Gene Therapy · 2013
    Article
  12. Article
  13. Recent advances in RNA interference therapeutics for CNS diseases.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2013
    Review
  14. Article
  15. Review
  16. Recent advances in the genetics of cerebellar ataxias.Current neurology and neuroscience reports · 2012
    Review
  17. Cell biology of spinocerebellar ataxia.The Journal of cell biology · 2012
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 2 countries.

Wei-Ling TsouInstitute of Neuroscience, School of Life Sciences, National Yang-Ming University, Taipei, Taiwan.
Bing-Wen Soong
Henry L Paulson
Edgardo Rodríguez-Lebrón
University of Michigan–Ann Arbor · USNational Yang Ming Chiao Tung University · TWTaipei Veterans General Hospital · TW

Funding

RNAI for Huntington's DiseaseP01NS050210 · NINDS · UNIVERSITY OF IOWA · PI DAVIDSON, BEVERLY L. · 2005 to 2009
$6.5M
Splice isoform-specific RNAi as therapy for Spinocerebellar Ataxia type 6R21NS072229 · NINDS · UNIVERSITY OF IOWA · PI RODRIGUEZ, EDGARDO · 2011 to 2012
$415k
NINDS NIH HHS NS-072229NINDS NIH HHS NS-50210NINDS NIH HHS P01 NS050210NINDS NIH HHS R21 NS072229
6 · The paper itself

Abstract

Spinocerebellar ataxia type 6 (SCA6) is an inherited neurodegenerative disease caused by a polyglutamine (polyQ) expansion in the Ca(V)2.1 voltage-gated calcium channel subunit (CACNA1A). There is currently no treatment for this debilitating disorder and thus a pressing need to develop preventative therapies. RNA interference (RNAi) has proven effective at halting disease progression in several models of spinocerebellar ataxia (SCA), including SCA types 1 and 3. However, in SCA6 and other dominantly inherited neurodegenerative disorders, RNAi-based strategies that selectively suppress expression of mutant alleles may be required. Using a Ca(V)2.1 mini-gene reporter system, we found that pathogenic CAG expansions in Ca(V)2.1 enhance splicing activity at the 3'end of the transcript, leading to a CAG repeat length-dependent increase in the levels of a polyQ-encoding Ca(V)2.1 mRNA splice isoform and the resultant disease protein. Taking advantage of this molecular phenomenon, we developed a novel splice isoform-specific (SIS)-RNAi strategy that selectively targets the polyQ-encoding Ca(V)2.1 splice variant. Selective suppression of transiently expressed and endogenous polyQ-encoding Ca(V)2.1 splice variants was achieved in a variety of cell-based models including a human neuronal cell line, using a new artificial miRNA-like delivery system. Moreover, the efficacy of gene silencing correlated with effective intracellular recognition and processing of SIS-RNAi miRNA mimics. These results lend support to the preclinical development of SIS-RNAi as a potential therapy for SCA6 and other dominantly inherited diseases.

Indexed as

Alternative SplicingCalcium ChannelsCalcium Channels, N-TypeCell Line, TumorGenetic TherapyGenetic VariationHumansNeuroblastomaProtein IsoformsRepetitive Sequences, Nucleic AcidRNA, MessengerRNA SplicingSpinocerebellar AtaxiasTranscription, GeneticCACNA1A protein, humanCalcium ChannelsCalcium Channels, N-TypeProtein IsoformsRNA, Messenger

Identifiers

PMID21550405
PMCPMC3169420
OpenAlexW2029828071

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.