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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
대한이비인후과학회 대한이비인후-두경부외과학회지 대한이비인후과학회지 두경부외과학 제45권 제3호
발행연도
2002.1
수록면
208 - 213 (6page)

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Background and Objectives:Recent technical advances allow serial culture of normal human midle ear epithelial (NH-MEE)ablish a culture system to differentiate serially cultured NHMEE cells into ciliated cells. If the ciliated cells were to develop, the percentage of ciliated cells and secretory cells throughout the duration of culture would be measured. We also examined the levels of mucin and lysozyme secretion and their mRNAs in a time-dependent maner. Materials and Method:Normal appearing human middle ear mucosa was harvested and subcultured after enzymatic disaggregation. These cells were diffe-rentiated in air-liquid interface (ALI) culture for 2 days, 1 week, 2 weks, 3 weeks and 4 weks after confluence. On each cell were measured by imunohistochemical study and dot blotting. The level of mucin genes 5AC (MUC5AC), MUC5B, MUC8 messenger RNA(mRNA)s and the level of lysozyme mRNA were measured on each culture period by reverse transcription (RT)-polymerase chain reaction (PCR). Results:Ciliogenesis usually started on the 16th-18th day after con-fluence. The percentage of ciliated cells increased over time up to 10.6% but that of secretory cells remained at about 40% dly and then maintained a plateau. The expression levels of MUC5B, MUC8 and Lysozyme increased with culture time. Especially, MUC8 showed a dramatic increase on the 28th day after confluence. In contrast, the level of MUC5AC mRNA showed a peak on the 14th day after confluence, and then decreased. Conclusion:Ciliary differentiation of NHMEE cells can be induced by ALI culture system. Our study also suggests that secretory function develops earlier than ciliogenesis, and that the expressions of MUC5B and MUC8 (Korean J Otolaryngol 2002; 45:208-13)

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