Abstract
Retinal explant culture systems have the potential to mimic the functional dynamics of the organ beyond those of the dissociated cells, thus making this technique a very powerful intermediate model system between in vitro cell cultures and in vivo animal models. The different retinal layers made of highly specialized cell types remain intact, while glia cell reactions and/or intercellular interactions can be evaluated under well-defined conditions in the lab.In retinal disorders neurodegeneration of mature retinal cells takes place. Therefore, we investigated the adult murine neuroretina in organ culture to test its suitability for use in preclinical therapeutic applications. Here we describe a method for the organ culture of adult murine retina (>12weeks) used to establish survival, cellular changes and early degeneration patterns of neuronal and glial cells. After enucleation of the eyeball and careful dissection of the retina from the sclera and retinal pigment epithelium, the detached retina is cultured with photoreceptor facing down on a supporting track-etched polycarbonate membrane in a 6-well culture plate maintained in a humidified atmosphere of 5% CO2 and 95% air at 37°C. After 1, 2, 3, 4, 6, 8, or 10days retinal explants can be harvested and immediately processed for RNA isolation or fixed in paraformaldehyde for histological analysis.
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