AAV-Mediated Gene Delivery to 3D Retinal Organoids Derived from Human Induced Pluripotent Stem Cells

International Journal of Molecular Sciences

Lyes Toualbi¹  Fiona Routet¹  Sacha Reichman¹  Jens Duebel¹  Hanen Khabou¹  Laure Guibbal¹  Marcela Garita-Hernandez¹  Luisa Riancho¹  Olivier Goureau¹  Jose-Alain Sahel¹  Deniz Dalkara¹ 

[1] Sorbonne Université,, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, F-75012 Paris, France;

关键词: retinal organoids;    hips cells;    rpe;    gene delivery;    aav;   

DOI  :  10.3390/ijms21030994

来源: DOAJ

【 摘 要 】

Human induced pluripotent stem cells (hiPSCs) promise a great number of future applications to investigate retinal development, pathophysiology and cell therapies for retinal degenerative diseases. Specific approaches to genetically modulate hiPSC would be valuable for all of these applications. Vectors based on adeno-associated virus (AAV) have shown the ability for gene delivery to retinal organoids derived from hiPSCs. Thus far, little work has been carried out to investigate mechanisms of AAV-mediated gene delivery and the potential advantages of engineered AAVs to genetically modify retinal organoids. In this study, we compared the early transduction efficiency of several recombinant and engineered AAVs in hiPSC-derived RPE cells and retinal organoids in relation to the availability of their cell-surface receptors and as a function of time. The genetic variant AAV2-7m8 had a superior transduction efficiency when applied at day 44 of differentiation on retinal organoids and provided long-lasting expressions for at least 4 weeks after infection without compromising cell viability. All of the capsids we tested transduced the hiPSC-RPE cells, with the AAV2-7m8 variant being the most efficient. Transduction efficiency was correlated with the presence of primary cell-surface receptors on the hiPS-derived organoids. Our study explores some of the mechanisms of cell attachment of AAVs and reports long-term gene expression resulting from gene delivery in retinal organoids.

【 授权许可】

Unknown