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AN IMMUNOHISTOCHEMICAL STUDY ON THE EXPRESS1ON OF TGF-¥â IN THE AMELOBLASTOMA AND DEVELOPING TOOTH GERM OF HUMAN EMBRYO AND FETUSES

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Abstract

¹ß»ý Ä¡¾Æ¿Í Ä¡¼ºÁ¾¾çÁß ´ëÇ¥ÀûÀÎ ¹ý¶û¾Æ¼¼Æ÷Á¾°£ÀÇ TGF-¥â ¹ßÇöºÐÆ÷ Á¤µµ ¹× ¾ç»óÀ»
ºñ±³ºÐ¼®ÇÏ°íÀÚ Á¤»óÀΠžÆÀÇ Ä¡¹è ¹× ¹ý¶û¾Æ¼¼Æ÷Á¾¿¡ ¸é¿ªÁ¶Á÷È­ÇÐÀû ¿°»öÀ» ½ÃÇàÇÏ¿©
TGF-¥âÀÇ ¹ßÇö ¹× ºÐÆ÷¾ç»óÀ» ºñ±³ ºÐ¼®ÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. Ãʱâ Ä¡¹è ¹ß»ý°úÁ¤ Áß ³ú»ó±â¿Í ¸ð»ó±â¿¡¼­ TGF-¥â´Â »óÇǼº Ä¡ÆÇ ¹× ¹ý¶û±â¿¡ ÁÖ·Î
¹ßÇöµÇ¾úÀ¸³ª Ä¡¹è¸¦ µÑ·¯½Î°í ÀÖ´Â °£¿±Á¶Á÷¿¡¼­µµ °üÂûµÇ¾ú´Ù.
2. Á¾»ó±â¿¡¼­ TGF-¥âÀÇ ¹ßÇöÀº ¹ý¶û±âÀÇ ¸ðµç ¼¼Æ÷µé, ƯÈ÷ ³»Ä¡¼º »óÇÇ ¶Ç´Â ¿ÜÄ¡¼º
»óÇǼ¼Æ÷¿¡¼­ ¹ßÇöÀÌ µÇ¾ú´Ù. ¼º»ó¼¼¸ÁÃþÀÇ Á߾Ӻδ °æ¹ÌÇÏ¿´À¸³ª ¿Ü°£¿±ºÐÈ­°¡ ÀϾ´Â
¿ÜÄ¡¼º»óÇÇ¿Í ³»Ä¡¼º»óÇÇ°¡ ¸¸³ª´Â ºÎÀ§¿¡¼­ ÁÖ·Î Áߵ ¹ßÇöÀ» º¸¿´´Ù.
3. »ó¾Æ±âÁú ¹× ¹ý¶û¾Æ±âÁúÀÇ Ä§Âø±â¿¡¼­ TGF-¥â´Ü¹é ¹ßÇöÀº ¹ý¶û¾Æ¼¼Æ÷¿¡¼­ Á¶»ó¾Æ¼¼Æ÷
·Î ¹ßÇö ÀüȯÀÌ °üÂûµÇ¾ú´Ù.
4. ¸ÍÃâÄ¡¾Æ½Ã±â¿¡´Â TGF-¥â ¹ßÇöÀº Á¶»ó¾Æ¼¼Æ÷¿¡¼­ ÁÖ·Î Áߵ·Î ¹ßÇöµÇ°í ¹ý¶ûÁú, »ó
¾ÆÁú, ¹é¾ÇÁúÀº ¹Ì¾àÇÏ¿´´Ù.
5. ¿©Æ÷Çü ¹× »ö»óÇü ¹ý¶û¾Æ¼¼Æ÷Á¾¿¡¼­ TGF-¥âÀÇ ¹ßÇöÀº »óÇǼºÁ¾¾ç ¼ººÐ¿¡¼­ Áߵ ¾ç
¼º¹ßÇöÀ» º¸¿´°í °£ÁúÁ¶Á÷ÀÇ Ç÷°ü¿¡¼­ °æµµ·Î ³ªÅ¸³µ´Ù.
6. ±Ø¼¼Æ÷Á¾Çü¿¡¼­ TGF-¥âÀÇ ¹ßÇöÀº ¼º»ó¼¼Æ÷¿¡¼­ °¡Àå ¸¹Àº °­µµÀÇ ¹ßÇöÀ» º¸¿´À¸³ª Á¾
¾ç»óÇǼ¼Æ÷¿¡¼­ ¹Ì¾àÇÏ¿´´Ù.
7. °ú¸³¼¼Æ÷Çü ¹ý¶û¾Æ¼¼Æ÷Á¾¿¡¼­ TGF-¥âÀÇ ¹ßÇöÀº Á¾¾ç»óÇÇ º¯¿¬ºÎ¿Í ¼º»ó¼¼Æ÷°£ÀÇ Â÷ÀÌ
°¡ ¾øÀÌ ÁߵÀÇ ¹ßÇöÀ» º¸¿´´Ù.
8. ´Ü¹æ¼º ¹ý¶û¾Æ¼¼Æ÷Á¾¿¡¼­ TGF-¥âÀÇ ¹ßÇöÀº ÇǺ¹»óÇÇ¿¡¼­ ¹Ì¾àÇÑ ¹ßÇöÀ» º¸¿´´Ù.
ÀÌ»ó°ú °°Àº ¼Ò°ßÀ¸·Î TGF-¥â°¡ Ä¡¾ÆÇüÅ ¹ß»ý°úÁ¤¿¡¼­ »óÇÇ°£¿± »óÈ£ÀÛ¿ë¿¡ Áß¿äÇÑ ¿ª
ÇÒÀ» Çϸç ƯÈ÷ Ä¡¼ºÁ¾¾ç Áß ¹ý¶û¾Æ¼¼Æ÷Á¾ ¹ß»ý °úÁ¤¿¡¼­ Áß¿äÇÑ »óÇǺÐÈ­ÀÇ Á¶ÀýÀÎÀÚ·Î ÀÛ
¿ëÇϸ®¶ó ÃßÁ¤µÈ´Ù.
#ÃÊ·Ï#
Dysregulation of TGF-¥â that is a modulator of cell growth and differentiation can
result in uncontrolled growth and tumor formation. Monitoring these pattern of genes
and protein expression during tumor development will provide a basis for understanding
normal growth and distortion of osteochondrogenesis. Our comparative studies on the
experssion of TGF-¥â protein indicate that TGF-¥â may primarily be a regulator of
epithelial differentiation during tooth development (between 4 weeks and 40 gestational
weeks) and tumorigenesis of odontogenic neoplasm (ameloblastoma).
In early human tooth germ (cap/early bell stage) TGF-¥â protein was found in the
epithelial dentallamina and enamel orgen. TGF-¥â experessions were seen in inner and
outer dental epithelium during bell stage. During enamel and cementum appositional
stage, TGF-¥â expression shifted from the ameloblast to the odontoblast. In eruption
stage, TGF-¥â expressions look like moderate positive pattern in odontoblast and rare
pattern in enamel, dentin and cementum.
TGF-¥â expressions of follicular and plexiform amelobalstoma are moderate positive
reaction in ectodermal tumor components and mild positive in vessels of stroma tissue.
In acanthomatous type, TGF-¥â expression was shown severely positive finding in
stellate reticulum cell. TGF-¥â expressions were noted moderate reaction in margin of
tumor epithelium and stellate reticulum cell of granular ameloblastoma. In unicystic
ameloblastoma, TGF-¥â expression was rare feature in cystic luminal epithelium.
With these result, I should be suggested that TGF-¥â may play an important role in
epithelial-mesenchymal interactions in human tooth morphogenesis and development of
odontogenic epithelial tumors.

Å°¿öµå

Ameloblastoma; TGF-beta; Tooth Germ;

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