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최혁기 ( Hyeog Gi Choi ),김창현 ( Chang Hyun Kim ),박시내 ( Shi Nae Park ),최미영 ( Mi Yung Choi ),남승규 ( Seung Gyu Nam ),박성천 ( Sung Chun Park ),이성재 ( Sung Jae Lee ),이종민 ( Chong Min Lee ),이세윤 ( Sei Yun Lee ),여상원 ( 한국조직공학·재생의학회 2009 조직공학과 재생의학 Vol.6 No.4
The somatic stem cells in the auditory organs can be utilized for the treatment of sensory neuronal hearing loss. The aim of this study was to isolate and culture of adult stem cells from guinea pig spiral ganglion in order to investigate the presence of soamtic stem cells in auditory organs of adult mammals. Spiral ganglions were obtained from the cochlea of guinea pigs, which weigh about 300 g. The tissues were dissociated and cultured in a medium added with epidermal growth factor and fibroblast growth factor. Then they were labeled with many markers for the stem cells and their differentiated cells, and identified under immunofluorecence microscope to find out the presence of somatic stem cells. The cultured cells can differentiate into neuronal cells positive for β III tubulin and glial cells positive for S-100. They were confirmed to be differentiated cells from neurosphere as the positive results for known stem cell marker such as bromodeoxyuridine(BrdU) and nestin. It was confirmed that the neural stem cells were existed in the spiral ganglion of guinea pig, which have the capability of self renewal and differentiation into specific neural cells. This fact presents a possibility of stem cell treatment for the patients of hearing impairment.