Avian Adeno-Associated Viral Transduction of the Postembryonic Chicken Retina
| Autor: | William K. Stell, Frank Visser, Andy J. Fischer, Derek Waldner, N. Torben Bech-Hansen |
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| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Genetic enhancement Biomedical Engineering Biology Green fluorescent protein law.invention 03 medical and health sciences Transduction (genetics) chemistry.chemical_compound 0302 clinical medicine Confocal microscopy law Gene expression medicine Retina avian Retinal AAV Articles Cell biology Ganglion Ophthalmology 030104 developmental biology medicine.anatomical_structure chemistry photoreceptor transduction 030221 ophthalmology & optometry sense organs |
| Zdroj: | Translational Vision Science & Technology |
| ISSN: | 2164-2591 |
| Popis: | Purpose The posthatching chicken is a valuable animal model for research, but molecular tools needed for altering its gene expression are not yet available. Our purpose here was to adapt the adeno-associated viral (AAV) vector method, used widely in mammalian studies, for use in investigations of the chicken retina. We hypothesized that the recently characterized avian AAV (A3V) vector could effectively transduce chick retinal cells for manipulation of gene expression, after intravitreal or subretinal injection. Methods A3V encoding enhanced green fluorescent protein (EGFP) was injected intravitreally or subretinally into P1-3 chick eye and left for 7 to 10 days. Retinas were then sectioned or flat-mounted and visualized via laser-scanning confocal microscopy for analysis of expression and imaging of retinal cells. Results Intravitreal A3V-EGFP injection resulted in EGFP expression in a small percent of retinal cells, primarily those with processes and/or cell bodies near the vitreal surface. In contrast, subretinal injection of A3V-EGFP within confined retinal "blebs" produced high rates of transduction of rods and all types of cones. Some examples of all other major retinal cell types, including horizontal, amacrine, bipolar, ganglion, and Muller cells, were also transduced, although with much lower frequency than photoreceptors. Conclusions A3V is a promising tool for investigating chick retinal cells and circuitry in situ. This novel vector can be used for studies in which local photoreceptor transduction is sufficient for meaningful observations. Translational relevance With this vector, the postembryonic chick retina can now be used for preclinical trials of gene therapy for prevention and treatment of human retinal disease. |
| Databáze: | OpenAIRE |
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