title: Highly efficient homology-driven genome editing in human T cells by combining zinc-finger nuclease mRNA and AAV6 donor delivery.
abstract: The adoptive transfer of engineered T cells for the treatment of cancer, autoimmunity, and infectious disease is a rapidly growing field that has shown great promise in recent clinical trials. Nuclease-driven genome editing provides a method in which to precisely target genetic changes to further enhance T cell function in vivo. We describe the development of a highly efficient method to genome edit both primary human CD8 and CD4 T cells by homology-directed repair at a pre-defined site of the genome. Two different homology donor templates were evaluated, representing both minor gene editing events (restriction site insertion) to mimic gene correction, or the more significant insertion of a larger gene cassette. By combining zinc finger nuclease mRNA delivery with AAV6 delivery of a homologous donor we could gene correct 41% of CCR5 or 55% of PPP1R12C (AAVS1) alleles in CD8(+) T cells and gene targeting of a GFP transgene cassette in >40% of CD8(+) and CD4(+) T cells at both the CCR5 and AAVS1 safe harbor locus, potentially providing a robust genome editing tool for T cell-based immunotherapy.
authors.affiliation: Sangamo BioSciences, Inc., Richmond, CA 94804, USA jwang@sangamo.com.
authors.forename: Jianbin
authors.initials: J
authors.lastname: Wang
authors.affiliation: Sangamo BioSciences, Inc., Richmond, CA 94804, USA.
authors.forename: Joshua J
authors.initials: JJ
authors.lastname: DeClercq
authors.affiliation: Sangamo BioSciences, Inc., Richmond, CA 94804, USA.
authors.forename: Samuel B
authors.initials: SB
authors.lastname: Hayward
authors.affiliation: Sangamo BioSciences, Inc., Richmond, CA 94804, USA.
authors.forename: Patrick Wai-Lun
authors.initials: PW
authors.lastname: Li
authors.affiliation: Sangamo BioSciences, Inc., Richmond, CA 94804, USA.
authors.forename: David A
authors.initials: DA
authors.lastname: Shivak
authors.affiliation: Sangamo BioSciences, Inc., Richmond, CA 94804, USA.
authors.forename: Philip D
authors.initials: PD
authors.lastname: Gregory
authors.affiliation: Sangamo BioSciences, Inc., Richmond, CA 94804, USA.
authors.forename: Gary
authors.initials: G
authors.lastname: Lee
authors.affiliation: Sangamo BioSciences, Inc., Richmond, CA 94804, USA.
authors.forename: Michael C
authors.initials: MC
authors.lastname: Holmes
mesh_terms: D015496:CD4-Positive T-Lymphocytes / Q000201:enzymology / Q000378:metabolism*; D018414:CD8-Positive T-Lymphocytes / Q000201:enzymology / Q000378:metabolism*; D000229:Dependovirus / Q000235:genetics*; D004720:Endonucleases / Q000235:genetics*; D005822:Genetic Vectors; D015894:Genome, Human; D006801:Humans; D012333:RNA, Messenger / Q000235:genetics*; D014162:Transfection; D016335:Zinc Fingers
chemical_list: D012333:RNA, Messenger; D004720:Endonucleases