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bioRxiv · 10.1101/2020.08.27.269522

CRISPR/Cas9-mediated gene editing induces neurological recovery in an A53T-SNCA overexpression rat model of Parkinson's disease

Abstract

To date, no publicly available disease-modifying therapy for Parkinsons disease has been developed. This can be partly attributed to the absence of techniques for in vivo deletion of the SNCA gene (encoding -synuclein), which is one of the key players in Parkinsons disease pathology. In particular, A53T-mutated SNCA (A53T-SNCA) is one of the most studied familial pathologic mutations in Parkinsons disease. Here we utilized a recently discovered genome editing technique, CRISPR/Cas9, to delete A53T-SNCA in vitro and in vivo. Among various CRISPR/Cas9 systems, SaCas9-KKH with a single guide RNA (sgRNA) targeting A53T-SNCA was packaged into adeno-associated virus. Adeno-associated virus carrying SaCas9-KKH significantly reduced A53T-SNCA levels in A53T-SNCA-overexpressed HEK293T cells, without off-target effects on wild-type SNCA. Furthermore, we tested the techniques in vivo therapeutic potential in a viral A53T-SNCA overexpression rat model of Parkinsons disease. Gene deletion of A53T-SNCA significantly prevented the overexpression of -synuclein, dopaminergic neurodegeneration, and parkinsonian motor symptoms, whereas a negative control without sgRNA did not. Our findings propose CRISPR/Cas9 system as a potential therapeutic tool for A53T-SNCA familial Parkinsons disease.

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BibTeXRIS

Yoon, H. H., Ye, S., Lim, S., Lee, S. E., Oh, S.-J., Jo, A., Lee, H., Kim, N.-R., Kim, K., Kim, B.-J., Lee, C. J., Nam, M.-H., Hur, J. W., Jeon, S. R.. 2020-08-27. CRISPR/Cas9-mediated gene editing induces neurological recovery in an A53T-SNCA overexpression rat model of Parkinson's disease. https://doi.org/10.1101/2020.08.27.269522

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