PMID- 36206730 OWN - NLM STAT- MEDLINE DCOM- 20221011 LR - 20221118 IS - 1875-9777 (Electronic) IS - 1934-5909 (Print) IS - 1875-9777 (Linking) VI - 29 IP - 10 DP - 2022 Oct 6 TI - Choice of template delivery mitigates the genotoxic risk and adverse impact of editing in human hematopoietic stem cells. PG - 1428-1444.e9 LID - S1934-5909(22)00378-2 [pii] LID - 10.1016/j.stem.2022.09.001 [doi] AB - Long-range gene editing by homology-directed repair (HDR) in hematopoietic stem/progenitor cells (HSPCs) often relies on viral transduction with recombinant adeno-associated viral vector (AAV) for template delivery. Here, we uncover unexpected load and prolonged persistence of AAV genomes and their fragments, which trigger sustained p53-mediated DNA damage response (DDR) upon recruiting the MRE11-RAD50-NBS1 (MRN) complex on the AAV inverted terminal repeats (ITRs). Accrual of viral DNA in cell-cycle-arrested HSPCs led to its frequent integration, predominantly in the form of transcriptionally competent ITRs, at nuclease on- and off-target sites. Optimized delivery of integrase-defective lentiviral vector (IDLV) induced lower DNA load and less persistent DDR, improving clonogenic capacity and editing efficiency in long-term repopulating HSPCs. Because insertions of viral DNA fragments are less frequent with IDLV, its choice for template delivery mitigates the adverse impact and genotoxic burden of HDR editing and should facilitate its clinical translation in HSPC gene therapy. CI - Copyright (c) 2022 The Author(s). Published by Elsevier Inc. All rights reserved. FAU - Ferrari, Samuele AU - Ferrari S AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy; Vita-Salute San Raffaele University, Milan 20132, Italy. FAU - Jacob, Aurelien AU - Jacob A AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Cesana, Daniela AU - Cesana D AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Laugel, Marianne AU - Laugel M AD - INSERM UMR 1089, University of Nantes, CHU of Nantes, Nantes 44200, France. FAU - Beretta, Stefano AU - Beretta S AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Varesi, Angelica AU - Varesi A AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Unali, Giulia AU - Unali G AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Conti, Anastasia AU - Conti A AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Canarutto, Daniele AU - Canarutto D AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy; Vita-Salute San Raffaele University, Milan 20132, Italy; Pediatric Immunohematology Unit and BMT Program, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Albano, Luisa AU - Albano L AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Calabria, Andrea AU - Calabria A AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Vavassori, Valentina AU - Vavassori V AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Cipriani, Carlo AU - Cipriani C AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Castiello, Maria Carmina AU - Castiello MC AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy; Institute for Genetic and Biomedical Research (UOS Milan Unit), National Research Council, Milan 20132, Italy. FAU - Esposito, Simona AU - Esposito S AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Brombin, Chiara AU - Brombin C AD - University Center for Statistics in the Biomedical Sciences, Vita-Salute San Raffaele University, Milan 20132, Italy. FAU - Cugnata, Federica AU - Cugnata F AD - University Center for Statistics in the Biomedical Sciences, Vita-Salute San Raffaele University, Milan 20132, Italy. FAU - Adjali, Oumeya AU - Adjali O AD - INSERM UMR 1089, University of Nantes, CHU of Nantes, Nantes 44200, France. FAU - Ayuso, Eduard AU - Ayuso E AD - INSERM UMR 1089, University of Nantes, CHU of Nantes, Nantes 44200, France. FAU - Merelli, Ivan AU - Merelli I AD - Institute for Biomedical Technologies, National Research Council, Segrate 20090, Italy. FAU - Villa, Anna AU - Villa A AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy; Institute for Genetic and Biomedical Research (UOS Milan Unit), National Research Council, Milan 20132, Italy. FAU - Di Micco, Raffaella AU - Di Micco R AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Kajaste-Rudnitski, Anna AU - Kajaste-Rudnitski A AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Montini, Eugenio AU - Montini E AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy. FAU - Penaud-Budloo, Magalie AU - Penaud-Budloo M AD - INSERM UMR 1089, University of Nantes, CHU of Nantes, Nantes 44200, France. FAU - Naldini, Luigi AU - Naldini L AD - San Rafaelle Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy; Vita-Salute San Raffaele University, Milan 20132, Italy. Electronic address: naldini.luigi@hsr.it. LA - eng PT - Journal Article PL - United States TA - Cell Stem Cell JT - Cell stem cell JID - 101311472 RN - 0 (DNA, Viral) RN - 0 (Tumor Suppressor Protein p53) RN - EC 2.7.7.- (Integrases) SB - IM CIN - Cell Stem Cell. 2022 Oct 6;29(10):1426-1427. PMID: 36206729 MH - CRISPR-Cas Systems MH - DNA Damage MH - *DNA, Viral MH - Gene Editing MH - Hematopoietic Stem Cells MH - Humans MH - Integrases MH - *Tumor Suppressor Protein p53/genetics PMC - PMC9550218 OTO - NOTNLM OT - CRISPR-Cas9 OT - DNA damage response OT - DNA double-strand breaks OT - adeno-associated vector OT - gene editing OT - genotoxicity OT - hematopoietic stem/progenitor cells OT - integrase-defective lentiviral vector OT - inverted terminal repeats OT - p53 pathway COIS- Declaration of interests L.N., A.K.-R., A.V., M.C.C., S.F., and A.J. are inventors of patents on gene editing owned and managed by the San Raffaele Scientific Institute and Telethon Foundation. L.N. is founder, quota holder, and consultant of GeneSpire, a startup company aiming to develop ex vivo gene editing and exploiting IDLV. EDAT- 2022/10/08 06:00 MHDA- 2022/10/12 06:00 PMCR- 2022/10/06 CRDT- 2022/10/07 18:27 PHST- 2022/03/04 00:00 [received] PHST- 2022/07/18 00:00 [revised] PHST- 2022/09/06 00:00 [accepted] PHST- 2022/10/08 06:00 [pubmed] PHST- 2022/10/12 06:00 [medline] PHST- 2022/10/07 18:27 [entrez] PHST- 2022/10/06 00:00 [pmc-release] AID - S1934-5909(22)00378-2 [pii] AID - 10.1016/j.stem.2022.09.001 [doi] PST - ppublish SO - Cell Stem Cell. 2022 Oct 6;29(10):1428-1444.e9. doi: 10.1016/j.stem.2022.09.001.