Cell therapy for hereditary deafness using induced pluripotent stem cell

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In this study, we generated the novel inner ear progenitor cells from induced pluripotent stem (iPS) cells which express hair cell marker Myosin7a with proliferation potency. After the stimulation with FGF3 and FGF10, iPS cells were co-cultured with mitoticallyinactivated adult inner ear multipotent stem cells which we recently generated. They can be proliferate after the cryopreservation. In these methods, we obtained several lines of inner ear lineage cells such as hair cell marker Myosin7a positive cells with apical cilia composed of actin filament, Connexin26 expressing cells. It was suggested t hat these methods enables to replace multiple types of inner ear cells with any abnormalities