1. Academic Validation
  2. Efficient high-precision homology-directed repair-dependent genome editing by HDRobust

Efficient high-precision homology-directed repair-dependent genome editing by HDRobust

  • Nat Methods. 2023 Jul 20. doi: 10.1038/s41592-023-01949-1.
Stephan Riesenberg 1 Philipp Kanis 2 Dominik Macak 2 Damian Wollny 2 Dorothee Düsterhöft 2 Johannes Kowalewski 2 Nelly Helmbrecht 2 Tomislav Maricic 2 Svante Pääbo 2 3
Affiliations

Affiliations

  • 1 Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. stephan_riesenberg@eva.mpg.de.
  • 2 Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.
  • 3 Human Evolutionary Genomics Unit, Okinawa Institute of Science and Technology, Onna-son, Japan.
Abstract

Homology-directed repair (HDR), a method for repair of DNA double-stranded breaks can be leveraged for the precise introduction of mutations supplied by synthetic DNA donors, but remains limited by low efficiency and off-target effects. In this study, we report HDRobust, a high-precision method that, via the combined transient inhibition of nonhomologous end joining and microhomology-mediated end joining, resulted in the induction of point mutations by HDR in up to 93% (median 60%, s.e.m. 3) of chromosomes in populations of cells. We found that, using this method, insertions, deletions and rearrangements at the target site, as well as unintended changes at other genomic sites, were largely abolished. We validated this approach for 58 different target sites and showed that it allows efficient correction of pathogenic mutations in cells derived from patients suffering from anemia, sickle cell disease and thrombophilia.

Figures
Products