Murine cochlear cell sorting and cell-type-specific organoid culture.

Neonatal mouse cochlear duct cells can proliferate and grow in vitro into inner ear organoids. Distinctive cochlear duct cell types have different organoid formation capacities. Here, we provide a flow cytometric cell-sorting method that allows the subsequent culture of individual cochlear cell populations. For the efficient culture of the sorted cells, we provide protocols for growing free-floating inner ear organoids, the adherence of organoids to a substrate, and the expansion of organoid-derived inner ear colonies. For complete details on the use and execution of this protocol, please refer to Kubota et al. (2021).