| Autor: |
Laura Garcia-Perez, Marja van Eggermond, Lieke van Roon, Sandra A. Vloemans, Martijn Cordes, Axel Schambach, Michael Rothe, Dagmar Berghuis, Chantal Lagresle-Peyrou, Marina Cavazzana, Fang Zhang, Adrian J. Thrasher, Daniela Salvatori, Pauline Meij, Anna Villa, Jacques J.M. Van Dongen, Jaap-Jan Zwaginga, Mirjam van der Burg, H. Bobby Gaspar, Arjan Lankester, Frank J.T. Staal, Karin Pike-Overzet |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Molecular Therapy: Methods & Clinical Development, Vol 17, Iss , Pp 666-682 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2329-0501 |
| DOI: |
10.1016/j.omtm.2020.03.016 |
| Popis: |
Recombinase-activating gene-1 (RAG1)-deficient severe combined immunodeficiency (SCID) patients lack B and T lymphocytes due to the inability to rearrange immunoglobulin and T cell receptor genes. Gene therapy is an alternative for those RAG1-SCID patients who lack a suitable bone marrow donor. We designed lentiviral vectors with different internal promoters driving codon-optimized RAG1 to ensure optimal expression. We used Rag1−/− mice as a preclinical model for RAG1-SCID to assess the efficacy of the various vectors. We observed that B and T cell reconstitution directly correlated with RAG1 expression. Mice with low RAG1 expression showed poor immune reconstitution; however, higher expression resulted in phenotypic and functional lymphocyte reconstitution comparable to mice receiving wild-type stem cells. No signs of genotoxicity were found. Additionally, RAG1-SCID patient CD34+ cells transduced with our clinical RAG1 vector and transplanted into NSG mice led to improved human B and T cell development. Considering this efficacy outcome, together with favorable safety data, these results substantiate the need for a clinical trial for RAG1-SCID. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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