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Xicluna R, Avenel A, Vandamme C, Devaux M, Jaulin N, Couzinié C, Le Duff J, Charrier A, Guilbaud M, Adjali O, Gernoux G. Prevalence Study of Cellular Capsid-Specific Immune Responses to AAV2, 4, 5, 8, 9, and rh10 in Healthy Donors. Hum Gene Ther 2024. [PMID: 38581431 DOI: 10.1089/hum.2023.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2024] Open
Abstract
Recombinant adeno-associated virus (rAAV) vectors appear, more than ever, to be efficient viral vectors for in vivo gene transfer as illustrated by the approvals of 7 drugs across Europe and the United States. Nevertheless, preexisting immunity to AAV capsid in humans remains one of the major limits for a successful clinical translation. Whereas a preexisting humoral response to AAV capsid is well documented, the prevalence of preexisting capsid-specific T cell responses still needs to be studied and characterized. In this study, we investigated the prevalence of AAV-specific circulating T cells toward AAV2, 4, 5, 8, 9, and rh10 in a large cohort of healthy donors using the standard IFNγ ELISpot assay. We observed the highest prevalence of preexisting cellular immunity to AAV9 serotype followed by AAV8, AAV4, AAV2, AAVrh10, and AAV5 independently of the donors' serological status. An in-depth analysis of T cell responses toward the 2 most prevalent serotypes 8 and 9 shows that IFNγ secretion is mainly mediated by CD8 T cells for both serotypes. A polyfunctional analysis reveals different cytokine profiles between AAV8 and AAV9. Surprisingly, no IL-2 secretion was mediated by anti-AAV9 immune cells suggesting that these cells may rather be exhausted or terminally differentiated than cytotoxic T cells. Altogether, these results suggest that preexisting immunity to AAV may vary depending on the serotype and support the necessity of using multiparametric monitoring methods to better characterize anticapsid cellular immunity and foresee its impact in rAAV-mediated clinical trials.
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Affiliation(s)
- Rebecca Xicluna
- Nantes Université, CHU de Nantes, INSERM, TaRGeT - Translational Research in Gene Therapy, UMR 1089, Nantes, France
| | - Allan Avenel
- Nantes Université, CHU de Nantes, INSERM, TaRGeT - Translational Research in Gene Therapy, UMR 1089, Nantes, France
| | - Céline Vandamme
- Nantes Université, CHU de Nantes, INSERM, TaRGeT - Translational Research in Gene Therapy, UMR 1089, Nantes, France
| | - Marie Devaux
- Nantes Université, CHU de Nantes, INSERM, TaRGeT - Translational Research in Gene Therapy, UMR 1089, Nantes, France
| | - Nicolas Jaulin
- Nantes Université, CHU de Nantes, INSERM, TaRGeT - Translational Research in Gene Therapy, UMR 1089, Nantes, France
| | - Célia Couzinié
- Nantes Université, CHU de Nantes, INSERM, TaRGeT - Translational Research in Gene Therapy, UMR 1089, Nantes, France
| | - Johanne Le Duff
- Nantes Université, CHU de Nantes, INSERM, TaRGeT - Translational Research in Gene Therapy, UMR 1089, Nantes, France
| | - Alicia Charrier
- Nantes Université, CHU de Nantes, INSERM, TaRGeT - Translational Research in Gene Therapy, UMR 1089, Nantes, France
| | - Mickaël Guilbaud
- Nantes Université, CHU de Nantes, INSERM, TaRGeT - Translational Research in Gene Therapy, UMR 1089, Nantes, France
| | - Oumeya Adjali
- Nantes Université, CHU de Nantes, INSERM, TaRGeT - Translational Research in Gene Therapy, UMR 1089, Nantes, France
| | - Gwladys Gernoux
- Nantes Université, CHU de Nantes, INSERM, TaRGeT - Translational Research in Gene Therapy, UMR 1089, Nantes, France
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Sudrial J, Abdi W, Amathieu R, Luis D, Jabre P, Le Roux B, Slavov V, Kamoun W, Avenel A, Sebbah JL, Combes X, Dhonneur G. Performance des glottiscopes : une étude comparative randomisée menée sur simulateur d’intubation difficile. ACTA ACUST UNITED AC 2010; 29:347-53. [DOI: 10.1016/j.annfar.2009.12.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Accepted: 12/28/2009] [Indexed: 10/19/2022]
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