2019
DOI: 10.1016/j.omtn.2019.09.011
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Improved Double-Nicking Strategies for COL7A1-Editing by Homologous Recombination

Abstract: Current gene-editing approaches for treatment of recessive dystrophic epidermolysis bullosa (RDEB), an inherited, severe form of blistering skin disease, suffer from low efficiencies and safety concerns that complicate implementation in clinical settings. We present a strategy for efficient and precise repair of RDEB-associated mutations in the COL7A1 gene. We compared the efficacy of double-strand breaks (induced by CRISPR/Cas9), single nicks, or double nicks (induced by Cas9n) in mediating repair of a COL7A1… Show more

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Cited by 38 publications
(72 citation statements)
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“…A repair template, including a longer homology wild-type sequence and therefore covering more mutations sites, would result in several different not predictable HR events, which would even lower the already limited HR efficiency. So far, such personalized gene editing approaches via HR have been performed in cells isolated from XP, EBS and RDEB patients showing the potential to correct autosomal dominant as well as autosomal recessive diseases [47][48][49][50][51].…”
Section: Homologous Recombinationmentioning
confidence: 99%
“…A repair template, including a longer homology wild-type sequence and therefore covering more mutations sites, would result in several different not predictable HR events, which would even lower the already limited HR efficiency. So far, such personalized gene editing approaches via HR have been performed in cells isolated from XP, EBS and RDEB patients showing the potential to correct autosomal dominant as well as autosomal recessive diseases [47][48][49][50][51].…”
Section: Homologous Recombinationmentioning
confidence: 99%
“…Generell ist bei allen Gentherapiewerkzeugen, die das Erbgut verändern, äußerste Vorsicht geboten, und es bedarf vorab einer gründlichen Sicherheitsanalyse der generierten Reparaturmoleküle. Gerade bei Nukleasen ist bekannt, dass diese auch an ungewünschten Orten im Erbgut (oder Genom) schneiden können [7,12,13,24,25]. Aus diesem Grund wird aktuell intensiv am Einsatz potenziell sicherer Nukleasen [12,13,20] bzw.…”
Section: Gene Replacement Therapy • Designer Nucleases • Crispr/cas9 unclassified
“…Gerade bei Nukleasen ist bekannt, dass diese auch an ungewünschten Orten im Erbgut (oder Genom) schneiden können [7,12,13,24,25]. Aus diesem Grund wird aktuell intensiv am Einsatz potenziell sicherer Nukleasen [12,13,20] bzw. an sensitiveren Analysemethoden [23,25] gearbeitet, um diese möglichen Nebenwirkungen, auch Off-Targets genannt, im Erbgut aufspüren zu können.…”
Section: Gene Replacement Therapy • Designer Nucleases • Crispr/cas9 unclassified
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