RNA Therapeutics Institute; Program in Molecular Medicine; Department of Medicine
Biochemistry, Biophysics, and Structural Biology | Cell and Developmental Biology | Genetics and Genomics | Molecular Biology | Neuroscience and Neurobiology | Therapeutics
Applications of RNA interference for neuroscience research have been limited by a lack of simple and efficient methods to deliver oligonucleotides to primary neurons in culture and to the brain. Here, we show that primary neurons rapidly internalize hydrophobically modified siRNAs (hsiRNAs) added directly to the culture medium without lipid formulation. We identify functional hsiRNAs targeting the mRNA of huntingtin, the mutation of which is responsible for Huntington's disease, and show that direct uptake in neurons induces potent and specific silencing in vitro. Moreover, a single injection of unformulated hsiRNA into mouse brain silences Htt mRNA with minimal neuronal toxicity. Thus, hsiRNAs embody a class of therapeutic oligonucleotides that enable simple and straightforward functional studies of genes involved in neuronal biology and neurodegenerative disorders in a native biological context.
delivery, Huntington's disease, neurodegenerative disease, RNA interference, small interfering RNA
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DOI of Published Version
Mol Ther Nucleic Acids. 2015 Dec 1;4:e266. doi: 10.1038/mtna.2015.38. Link to article on publisher's site
Molecular therapy. Nucleic acids
Alterman JF, Hall LM, Coles AH, Hassler MR, Didiot MC, Chase KO, Abraham J, Sottosanti E, Johnson ES, Sapp E, Osborn MF, Difiglia M, Aronin N, Khvorova A. (2015). Hydrophobically Modified siRNAs Silence Huntingtin mRNA in Primary Neurons and Mouse Brain. RNA Therapeutics Institute Publications. https://doi.org/10.1038/mtna.2015.38. Retrieved from https://escholarship.umassmed.edu/rti_pubs/20
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.