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Targeting N-Terminal Huntingtin with a Dual-sgRNA Strategy by CRISPRCas9
Joint Authors
Wu, Junjiao
Tang, Yu
Zhang, Chun-Li
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-11-16
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Huntington’s disease (HD) is an autosomal dominant progressive neurodegenerative disorder, caused by a CAG/polyglutamine (polyQ) repeat expansion in the Huntingtin (HTT) gene.
The polyQ tract is located in and transcribed from N-terminal HTT of exon 1.
HTT is a large multifaceted protein, which participates in a range of cellular functions.
Previous studies have shown that truncated HTT, which lacks N-terminus, retains specific functions that can produce neuroprotective benefits.
It gives an insight that it is possible to repair HD by removing deleterious N-terminal HTT with CRISPR/Cas9, without compromising functions of remaining HTT peptides.
To successfully generate functional truncated HTT proteins, an alternative downstream ATG start codon that is capable of initiating truncated HTT expression is required.
In this study, we searched all possible in-frame ATGs before exon 7 and demonstrated that one of them can indeed initiate the downstream GFP expression in plasmids.
We then tried to remove endogenous N-terminal HTT with an optimized dual-sgRNA strategy by CRISPR/Cas9; however, we cannot detect obvious traits of truncated HTT expression.
Our results suggest that noncanonical ATGs of N-terminal HTT may not be effective in the genomic context, as in the construct context.
Nevertheless, our study examined the therapeutic efficacy of downstream noncanonical ATGs for protein translation and also provided an optimized dual-sgRNA strategy for further genome manipulation of the HTT gene.
American Psychological Association (APA)
Wu, Junjiao& Tang, Yu& Zhang, Chun-Li. 2019. Targeting N-Terminal Huntingtin with a Dual-sgRNA Strategy by CRISPRCas9. BioMed Research International،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1123131
Modern Language Association (MLA)
Wu, Junjiao…[et al.]. Targeting N-Terminal Huntingtin with a Dual-sgRNA Strategy by CRISPRCas9. BioMed Research International No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1123131
American Medical Association (AMA)
Wu, Junjiao& Tang, Yu& Zhang, Chun-Li. Targeting N-Terminal Huntingtin with a Dual-sgRNA Strategy by CRISPRCas9. BioMed Research International. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1123131
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1123131