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Jang Y, Kim YS, Wielgosz MM, Ferrara F, Ma Z, Condori J, Palmer LE, Zhao X, Kang G, Rawlings DJ, Zhou S, Ryu BY. Optimizing lentiviral vector transduction of hematopoietic stem cells for gene therapy. Gene Ther 2020; 27:545-556. [PMID: 32341484 PMCID: PMC7606410 DOI: 10.1038/s41434-020-0150-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 04/01/2020] [Accepted: 04/03/2020] [Indexed: 12/13/2022]
Abstract
Autologous gene therapy using lentiviral vectors (LVs) holds promise for treating monogenetic blood diseases. However, clinical applications can be limited by suboptimal hematopoietic stem cell (HSC) transduction and insufficient quantities of available vector. We recently reported gene therapy for X-linked severe combined immunodeficiency using a protocol in which patient CD34+ cells were incubated with two successive transductions. Here we describe an improved protocol for LV delivery to CD34+ cells that simplifies product manipulation, reduces vector consumption, and achieves greater vector copy number (VCN) of repopulating HSCs in mouse xenotransplantation assays. Notable findings include the following: (1) the VCN of CD34+ cells measured shortly after transduction did not always correlate with the VCN of repopulating HSCs after xenotransplantation; (2) single-step transduction at higher CD34+ cell concentrations (2-4 × 106/ml) conserved LV without compromising HSC VCN; (3) poloxamer F108 (LentiBOOST) increased HSC VCN by two- to threefold (average from three donors); (4) although LentiBOOST + prostaglandin E2 combination further increased VCN in vitro, the VCN observed in vivo were similar to LentiBOOST alone; (5) cyclosporine H increased the HSC VCN to a similar or greater extent with LentiBOOST in vivo. Our findings delineate an improved protocol to increase the VCN of HSCs after CD34+ cell transduction with clinically relevant LVs.
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Affiliation(s)
- Yoonjeong Jang
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Yoon-Sang Kim
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
- Mustang Bio, Worcester, MA, 01605, USA
| | - Matthew M Wielgosz
- Vector Development, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Francesca Ferrara
- Vector Development, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Zhijun Ma
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Jose Condori
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Lance E Palmer
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Xiwen Zhao
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Guolian Kang
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - David J Rawlings
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, and Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, 98101, USA
| | - Sheng Zhou
- Experimental Cellular Therapeutics Lab, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Byoung Y Ryu
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA.
- Lyell Immunopharma, Seattle, WA, 98109, USA.
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