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CULTURED HUMAN ORAL KERATINOCYTES; UITRASTRUCTURAL STUDY

±Ç¿ë´ë, À̹é¼ö, ÁÖ¼º¼÷,
¼Ò¼Ó »ó¼¼Á¤º¸
±Ç¿ë´ë (  ) - °æÈñ´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­¾Ç¾È¸é¿Ü°úÇб³½Ç
À̹é¼ö (  ) - °æÈñ´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­¾Ç¾È¸é¿Ü°úÇб³½Ç
ÁÖ¼º¼÷ (  ) - °æÈñ´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­ÇغÎÇб³½Ç

Abstract

°á·Ð
ÀúÀÚ´Â ¾à 10¼¼µÈ ¿©¾ÆÀÇ ±¸°­³» ¼Ò¼ö¼ú½Ã ¾ò¾îÁø °¢È­Ä¡ÀºÀ» ÀÌ¿ëÇÏ¿© Ä¡Àº°¢È­»óÇÇÁ¶Á÷
À» ¹è¾çÇÏ¸ç µµ¸³À§»óÂ÷Çö¹Ì°æÀ¸·Î °üÂûÇÏ¿´°í, ¶ÇÇÑ ÀÌÀÇ ¹Ì¼¼±¸Á¶Àû ¿¬±¸¸¦ À§ÇÏ¿© Åë¹ý
ÀÇ ¹è¾çÁ¶Á÷ÀÇ Ç¥º»Á¦ÀÛ¹ýÀ» ÅëÇÏ¿© Ç¥º»À» Á¦ÀÛÇÑ ÈÄ Åõ°úÀüÀÚÇö¹Ì°æÀ¸·Î °üÂûÇÏ¿© ´ÙÀ½°ú
°°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. ¿Ü½ÄµÈ Á¶Á÷¼ÒÆíÀ¸·ÎºÎÅÍ ¹è¾ç ½ÃÀÛÀ¸·ÎºÎÅÍ ¾à 3ÀÏÈÄ ÃÖÃÊ·Î »óÇǼ¼Æ÷ÀÇ Áõ½ÄÀÌ µµ¸³
À§»óÂ÷Çö¹Ì°æ»ó¿¡ ³ªÅ¸³µÀ¸¸ç, ¹è¾çµÇ´Â Ä¡Àº°¢È­»óÇǼ¼Æ÷µéÀº È°¹ßÇÑ ºÐ¿­»óÀ» º¸ÀÌ°í ÀÖ
¾úÀ¸¸ç Áõ°¡µÈ ÇÙ/¼¼Æ÷Áú ºñÀ² ¹× À¯»çºÐ¿­ÀÇ ¼Ò°ßÀ» º¸ÀÌ°í ÀÖ¾ú´Ù.
2. ¹è¾çµÇ´Â Ä¡Àº°¢È­»óÇǼ¼Æ÷µéÁß¿¡¼­ º¯¿¬ºÎÀÇ ¼¼Æ÷µé¿¡¼­ ƯÀÌÀûÀÎ ºÎä¸ð¾ç(fan-like
appearance)ÀÇ ¼¼Æ÷ÁúÀÇ È®Àå¼Ò°ßÀ» º¸¿´À¸¸ç ¿Ü½ÄµÈ Á¶Á÷¼ÒÆí ºÎ±Ù¿¡¼­ºÎÅÍ Ä¡Àº°¢È­»óÇÇ
µéÀÇ ¼ºÃþÈ­¸¦ º¸À̱⠽ÃÀÛÇß´Ù.
3. ¹Ì¼¼±¸Á¶Àû°üÂû¿¡¼­ ¹è¾çµÈ Ä¡Àº°¢È­»óÇǼ¼Æ÷µéÀº ¾à 10¿©ÃþÀÇ ÁßÃþÀ» ÀÌ·ç°í ÀÖ¾úÀ¸
¸ç, Á¤»óÁ¶Á÷¿¡¼­ º¼ ¼ö ÀÖ´Â ¼¼Æ÷Ãþ°£ÀÇ ÇüÅÂÀû Â÷ÀÌ´Â º¸ÀÌÁö ¾Ê°í ¸ðµÎ ±æÂßÇÏ°Ô ¿¬ÀåµÈ
¸ð½ÀÀ» º¸ÀÌ°í ÀÖ¾ú´Ù.
4. ÇÙÀÌ ¼Ò½ÇµÈ ¼¼Æ÷µéµµ »ó´ç¼ö °üÂûµÇ¾úÀ¸¸ç ³ôÀº ÀüÀڹеµ¸¦ º¸ÀÌ´Â °¢È­ÃÊÀÚ°ú¸³
(keratohyaline granule)µî ÀÇ ¼¼Æ÷³» °ú¸³µéÀÌ °üÂûµÇ¾ú´Ù. ¶ÇÇÑ ´ëºÎºÐÀÇ ¼¼Æ÷¼Ò±â°üµéÀº
ÅðÈ­ÇÏ°í ÀÖ¾úÀ¸¸ç ¼¼Æ÷Áú³»¿¡´Â ´Ù·®ÀÇ ´ç±è¿ø¼¶À¯µéÀÌ »êÀçÇØ ÀÖ¾ú´Ù.
5. ¼¼Æ÷°£ÀÇ °áÇÕÀº ÁÖ·Î ¼¼Æ÷°£±³(desmosome)¿¡ ÀÇÇØ ÀÌ·ç¾îÁö°í ÀÖ¾úÀ¸¸ç ±× ÃâÇöºóµµ
´Â Á¤»óÁ¶Á÷°ú ºñ±³ÇÏ¿© ´Ù¼Ò ³·Àº °ÍÀ¸·Î »ý°¢µÇ¾ú´Ù.
6. ÀÌ¿Í °°Àº ¼Ò°ß»ó ¹è¾çµÈ Ä¡Àº°¢È­»óÇǼ¼Æ÷µéÀº ¸ð¼¼Æ÷¿Í À¯»çÇÑ ºÐÈ­°úÁ¤À» °ÞÀ¸¸ç
Á¤»óÀûÀÎ °¢È­»óÇǼ¼Æ÷µé°ú °°ÀÌ ÃÖÁ¾ºÐÈ­(terminal differentiation)ÇÏ´Â °ÍÀ¸·Î ÁüÀ۵Ǿú´Ù.

In oral and maxillofacial surgery, there are many cases requiring the graft of
epidermal tissues such as maxillectomy, and vestibuloplasty There have been so many
challenges for the culture of the epidermal tissue.
Observing the ultrastructure of the cultured human oral kertinocytes, we could
compare this findings with that of in vivo ones. With that, we could find the
differencies and similarities between cultured cells and in vivo ones, and evaluate the
clinical applications of cultured tissue. Human gingiva wag obtained and the specimen
was explanted on 24-well plate. Two types of culture media were used in thin culture
system. One was for the growth of the keratinocytes (Media ¥°), and the other was far
the stratification (Media ¥±). Media ¥° had special ingredients for the epidermal growth.
; Those were 0.5% dimethyl sulfoxide (DMSO), 30ng/§¢ of epidermal growth factor
(EGF), 30ng/§¢ of cholera toxin, and 5§¶/§¢ of transferrin.
We cultured the oral keratinocytes for 3 weeks, and at that time the cultured
keratinocytes were processed to prepare the specimen for the TEM study.
The results were as follows. ;
1. In the phase contrast micrograph. epidermal outgrowth firstly appeared on the 3rd
day after explantation, and the growing keratinocytes were activley mitotic, and had
polygonal shale and increased N/C ratio.
2. In the phase contrast micrograph, the outer mosts cells exhibited areal where broad
cytoplasmic processes extended out onto the culture subtratum(fan-like appaearance).
3. In the TEM micrographs, the cultured keratinocytes showed stratification. The cells
were in elongated form, and there were no morphologic differencies among the layers
usually found in the in vivo gingiva,
4. Most of cellular organelles underwent lysis, and keratohyaline granules were seen.
Tonosfibrils were dispersed in the cytoplasm.
5. The cells were interconnected by desmosomes, and their frequency of distribution
was considered to be lower than that of in vivo keratinocytes.
6. We could conclude the cultured oral keratinocytes exhibited signs of terminal
differentiation.

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