Experiment: AAV tropism in kidney organoids cultured under flow
PI: Ryuji Morizane, MD, PhD
Description: Human kidney organoids generated from human ES and iPS cells are used to evaluate tropism of AAV2, AAV8, and AAV9 that express eGFP under CMV promoter. Organoids are exposed to AAVs at MOI 10^5 from differentiation day 21 to 28. Four culture conditions were tested: U-well suspension culture, static culture on gelbrin, low flow on a chip coated with gelbrin, and high flow on a chip coated with gelbrin. Immunohistochemistry was performed to visualize transduced cells with staining for podocytes (PODXL) and proximal tubules (LTL). AAV2/2 shows the highest transduction efficiency among three serotypes evaluated, and the GFP expression is highest in the static condition.
Delivery Assays:
- Calculated total transduction efficiency by counting fluorescent cells (GFP) compared to DAPI stained cells.
- Calculated transduction efficiency by counting fluorescent cells (GFP) compared to DAPI and podocytes (PODXL) stained cells.
- Calculated transduction efficiency by counting fluorescent cells (GFP) compared to DAPI and proximal tubules (LTL) stained cells.
Parent Project: Vascularized kidney organoids on chip for efficacy and toxicity testing of somatic genome editing
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Other experiments in this project: 6
- Evaluation of DNA damage, cellular toxicity and inflammatory markers following saCas9 and gRNAs delivery by AAV2 in kidney organoids.
- Biomarker assays to evaluate toxicity and inflammation induced by AAVs in ES cell derived kidney organoids.
- AAV tropism in kidney organoids derived from human pluripotent stem cells.
- AAV2/2 transduction efficiencies in kidney organoids cultured under flow determined by FACS
- Biomarker assays to evaluate toxicity induced by AAVs in iPS cell derived kidney organoids.
- Delivery of saCas9 and gRNAs to nephron epithelia by AAV2 in kidney organoids.
Download: Submitted files
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Results |
AAV tropism in kidney organoids cultured under flow (A) Immunostaining images of kidney organoids exposed to AAV2/2, 2/8, or 2/9 at MOI 10^5 for 1 week in four culture conditions. (B) Graphs showing percentages of transduced cells by AAV2/2, 2/8, or 2/9. (C) Immunocytochemistry for LTL and GFP in organoids treated with AAV2/2. (D, E) GFP+ cells in podocytes or proximal tubules in organoids treated with AAV2/2. |