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Approaches for Genome Editing Using Viral Vectors of Adenovirus and Lentivirus

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Pathology, Diagnostics, and Therapeutics".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 2615

Special Issue Editor


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Guest Editor
Laboratory of Molecular Genetics, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo 108-8639, Japan
Interests: development of replication-incompetent adenovirus vectors; genome editing using viral vectors; viral vectors expressing multiplex guide RNAs
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Special Issue Information

Dear Colleagues,

Genome editing is attractive because it makes impossible-seeming problems appear possible. This technique could offer effective therapies for genetic diseases, fatal cancers and severe infectious diseases, including COVID-19. This technique has been used in various biological studies, in both basic and applied areas. Viral vectors are often effective as a tool in these fields. Because this technique has been generated only recently, there is a lot of potential for new developments and improvements to fulfill possibilities, enlarge these fields and produce new methods.

The presented Special Issue focuses on new approaches to adenovirus and lentivirus vectors. As these vectors are widely used, improvements and new approaches can be shared among many scientists. Additionally, their large genomes and capacity have a wide potential for improvement. Because this Special Issue is method-oriented, a simple use of genome editing techniques employing these vectors is not the focus, but new approaches to these vectors in combination with genome editing are welcome. I hope that your contribution to this exciting and promising field will advance the application of genome editing in basic studies and therapies of various diseases.

Prof. Izumu Saito
Guest Editor

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Keywords

  • Adenovirus vectors
  • Viral vectors
  • Genome editing
  • Guide RNA
  • Short-hairpin RNA (shRNA)
  • Gene therapy

Published Papers (1 paper)

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Research

15 pages, 1440 KiB  
Article
Adenovirus Vectors Expressing Eight Multiplex Guide RNAs of CRISPR/Cas9 Efficiently Disrupted Diverse Hepatitis B Virus Gene Derived from Heterogeneous Patient
by Yuya Kato, Hirotaka Tabata, Kumiko Sato, Mariko Nakamura, Izumu Saito and Tomoko Nakanishi
Int. J. Mol. Sci. 2021, 22(19), 10570; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms221910570 - 29 Sep 2021
Cited by 9 | Viewed by 2121
Abstract
Hepatitis B virus (HBV) chronically infects more than 240 million people worldwide, causing chronic hepatitis, cirrhosis, and hepatocellular carcinoma (HCC). Genome editing using CRISPR/Cas9 could provide new therapies because it can directly disrupt HBV genomes. However, because HBV genome sequences are highly diverse, [...] Read more.
Hepatitis B virus (HBV) chronically infects more than 240 million people worldwide, causing chronic hepatitis, cirrhosis, and hepatocellular carcinoma (HCC). Genome editing using CRISPR/Cas9 could provide new therapies because it can directly disrupt HBV genomes. However, because HBV genome sequences are highly diverse, the identical target sequence of guide RNA (gRNA), 20 nucleotides in length, is not necessarily present intact in the target HBV DNA in heterogeneous patients. Consequently, possible genome-editing drugs would be effective only for limited numbers of patients. Here, we show that an adenovirus vector (AdV) bearing eight multiplex gRNA expression units could be constructed in one step and amplified to a level sufficient for in vivo study with lack of deletion. Using this AdV, HBV X gene integrated in HepG2 cell chromosome derived from a heterogeneous patient was cleaved at multiple sites and disrupted. Indeed, four targets out of eight could not be cleaved due to sequence mismatches, but the remaining four targets were cleaved, producing irreversible deletions. Accordingly, the diverse X gene was disrupted at more than 90% efficiency. AdV containing eight multiplex gRNA units not only offers multiple knockouts of genes, but could also solve the problems of heterogeneous targets and escape mutants in genome-editing therapy. Full article
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