期刊
NEUROBIOLOGY OF DISEASE
卷 23, 期 3, 页码 578-586出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.nbd.2006.04.019
关键词
neurodegenerative disease; neurodegeneration; dominant; gain-of-function; RNAi therapy; transgenic mice; inducible; regulatable; cre-lox; motor neuron
资金
- NIA NIH HHS [R21AG023808] Funding Source: Medline
- NINDS NIH HHS [R01NS048145] Funding Source: Medline
RNA interference (RNAi) has the potential to treat diseases caused by dominant, gain-of-function type of gene mutations. In these diseases, one allele is mutated and produces a toxic protein, whereas the other allele is normal and performs vital functions. One challenge in the treatment is to specifically inhibit the mutant allele toxicity while maintaining the normal allele function. To test allele-specific silencing in vivo, we made transgenic mice that express an shRNA against mutant Cu, Zn superoxide dismutase gene (SOD 1(G93A)), which causes amyotrophic lateral sclerosis (ALS) by a gain of an unknown toxic property. By crossing this transgenic line with mice that express SOD 1G93A and mice that express wild-type human SOD1, we found that this shRNA specifically silences the mutant, but not the wild-type SOD1. The silencing of the mutant significantly delayed ALS onset and extended survival. Thus, RNAi can achieve allele-specific silencing and therapeutic benefit in vivo. (c) 2006 Elsevier Inc. All rights reserved.
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