| First Author | Krooss SA | Year | 2020 |
| Journal | iScience | Volume | 23 |
| Issue | 1 | Pages | 100764 |
| PubMed ID | 31887661 | Mgi Jnum | J:338671 |
| Mgi Id | MGI:6717820 | Doi | 10.1016/j.isci.2019.100764 |
| Citation | Krooss SA, et al. (2020) Ex Vivo/In vivo Gene Editing in Hepatocytes Using "All-in-One" CRISPR-Adeno-Associated Virus Vectors with a Self-Linearizing Repair Template. iScience 23(1):100764 |
| abstractText | Adeno-associated virus (AAV)-based vectors are considered efficient and safe gene delivery systems in gene therapy. We combined two guide RNA genes, Cas9, and a self-linearizing repair template in one vector (AIO-SL) to correct fumarylacetoacetate hydrolase (FAH) deficiency in mice. The vector genome of 5.73 kb was packaged into VP2-depleted AAV particles (AAV2/8(DeltaVP2)), which, however, did not improve cargo capacity. Reprogrammed hepatocytes were treated with AIO-SL.AAV2(DeltaVP2) and subsequently transplanted, resulting in large clusters of FAH-positive hepatocytes. Direct injection of AIO-SL.AAV8(DeltaVP2) likewise led to FAH expression and long-term survival. The AIO-SL vector achieved an approximately 6-fold higher degree of template integration than vectors without template self-linearization. Subsequent analysis revealed that AAV8 particles, in contrast to AAV2, incorporate oversized genomes distinctly greater than 5.2 kb. Finally, our AAV8-based vector represents a promising tool for gene editing strategies to correct monogenic liver diseases requiring (large) fragment removal and/or simultaneous sequence replacement. |
