Abstract
Hearing loss caused by the damage of cochlea sensory cells or neurons is a common human disease, but also affects dogs and other animals. To test their progenitor nature as potential value for future therapies, we characterized cells derived from the cochlear epithelium in dog fetuses. In total, 8 fetuses of 35-40days of gestation, derived from castration campaigns, were investigated. Cells were analysed by the MTT colorimetric assay and in regard to cell cycle, differentiation capacities, immunophenotypes and qPCR analysis. In culture, cells had a fibroblast-like morphology. Phenotypic immunocharacterization showed positive staining for mesenchymal stem cell and pluripotency markers and were negative for hematopoietic cell markers. Cells possessed differentiation capacity for the three main cell lineages: osteogenic, adipogenic and chondrogenic, altogether indicating their nature as mesenchymal stem cells. Thus, cells derived from fetal cochlear tissues indeed may provide valuable sources of progenitor cells for cell therapy of canine deafness and other diseases.
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