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- W2077332675 endingPage "e21352" @default.
- W2077332675 startingPage "e21352" @default.
- W2077332675 abstract "Since RNA interference (RNAi) has the potential to discriminate between single nucleotide changes, there is growing interest in the use of RNAi as a promising therapeutical approach to target dominant disease-associated alleles. Mutations in the leucine-rich repeat kinase 2 (LRRK2) gene have been linked to dominantly inherited Parkinson's disease (PD). We focused on three LRRK2 mutations (R1441G/C and the more prevalent G2109S) hoping to identify shRNAs that would both recognize and efficiently silence the mutated alleles preferentially over the wild-type alleles. Using a luciferase-based reporter system, we identified shRNAs that were able to specifically target the R1441G and R1441C alleles with 80% silencing efficiency. The same shRNAs were able to silence specifically mRNAs encoding either partial or full-length mutant LRRK2 fusion proteins, while having a minimal effect on endogenous wild-type LRRK2 expression when transfected in 293FT cells. Shifting of the mutant recognition site (MRS) from position 11 to other sites (4 and 16, within the 19-mer window of our shRNA design) reduced specificity and overall silencing efficiency. Developing an allele-specific RNAi of G2019S was problematic. Placement of the MRS at position 10 resulted in efficient silencing of reporters (75–80%), but failed to discriminate between mutant and wild-type alleles. Shifting of the MRS to positions 4, 5, 15, 16 increased the specificity of the shRNAs, but reduced the overall silencing efficiency. Consistent with previous reports, these data confirm that MRS placement influences both allele-specificity and silencing strength of shRNAs, while further modification to hairpin design or MRS position may lead to the development of effective G2019S shRNAs. In summary, the effective shRNA against LRRK2 R1441 alleles described herein suggests that RNAi-based therapy of inherited Parkinson's disease is a viable approach towards developing effective therapeutic interventions for this serious neurodegenerative disease." @default.
- W2077332675 created "2016-06-24" @default.
- W2077332675 creator A5016837398 @default.
- W2077332675 creator A5061695954 @default.
- W2077332675 creator A5074486047 @default.
- W2077332675 date "2011-06-21" @default.
- W2077332675 modified "2023-10-18" @default.
- W2077332675 title "Efficient Allele-Specific Targeting of LRRK2 R1441 Mutations Mediated by RNAi" @default.
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- W2077332675 doi "https://doi.org/10.1371/journal.pone.0021352" @default.
- W2077332675 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3119704" @default.
- W2077332675 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21712955" @default.
- W2077332675 hasPublicationYear "2011" @default.
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