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NFI-C °á¼Õ »ýÁãÀÇ »ó¾Æ¸ð¼¼Æ÷ ºÐÈ­°úÁ¤¿¡¼­ DSPP¿Í BSP mRNAÀÇ ¹ßÇö

EXPRESSION OF DSPP AND BSP MRNAS DURING ODONTOBLAST DIFFERENTIATION IN THE NFI-C(-/-)MICE

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Á¤Çö±¸ ( Jung Hyun-Ku ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
¹ÚÁÖö ( Park Ju-Cheol ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­ÇغÎÇבּ¸¼Ò
ÀÌ»óÈ£ ( Lee Sang-Ho ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
ÀÌâ¼· ( Lee Chang-Seep ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
À̳­¿µ ( Lee Nan-Young ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÈïÁß ( Kim Heung-Joong ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­ÇغÎÇבּ¸¼Ò

Abstract

NFI-C´Â Á¤»óÀûÀ¸·Î »ó¾Æ¸ð¼¼Æ÷, °ñ¸ð¼¼Æ÷¿¡ Á¸ÀçÇϸç,NFI-C°¡ °á¼ÕµÈ °æ¿ì Ä¡±Ù»ó¾ÆÁúÀ» Çü¼ºÇÏ´Â »ó¾Æ¸ð¼¼Æ÷ÀÇ ºÐÈ­¿¡ ÀÌ»óÀÌ ÀÖ´Ù°í ¾Ë·ÁÁ®ÀÖ´Ù.

º» ¿¬±¸´Â NFI-C(-/-) »ýÁã¿¡¼­ Ä¡°ü ¹× Ä¡±ÙÀÇ »ó¾ÆÁúÀ» Çü¼ºÇÏ´Â »ó¾Æ¸ð¼¼Æ÷ÀÇ Ç¥ÇöÇüÀ» »ó¾Æ¸ð¼¼Æ÷¿¡ ƯÀÌÀûÀ¸·Î ¹ßÇöÇÏ´Â DSPP¿Í °ñ¸ð¼¼Æ÷¿¡ ƯÀÌÀûÀ¸·Î ¹ÝÀÀÇÏ´Â BSP À¯ÀüÀÚ¸¦ ÀÌ¿ëÇÑ in-situ hybridizationÀ» ÅëÇÏ¿© ¿¬±¸ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.

1.NFI-C(-/-) »ýÁãÀÇ ±¸Ä¡¿¡¼­ Ä¡°ü »ó¾ÆÁúÀº Á¤»óÀûÀ¸·Î Çü¼ºµÇ¾úÀ¸³ª, Ä¡±Ù »ó¾ÆÁúÀº Çü¼ºµÇÁö ¾Ê¾Ò´Ù.

2.NFI-C(-/-) »ýÁãÀÇ ÇÏ¾Ç ÀýÄ¡ÀÇ ¼øÃø »ó¾ÆÁúÀº ºñ±³Àû ¸¹ÀÌ Çü¼ºµÇ¾úÀ¸³ª, ¼³ÃøÀÇ »ó¾ÆÁúÀº Çü¼ºµÇÁö ¾Ê¾Ò´Ù.

3.NFI-C (-/-) »ýÁãÀÇ ÇÏ¾Ç ÀýÄ¡ÀÇ »ó¾Æ¸ð¼¼Æ÷´Â ÇüÅ°¡ º¯È­µÇ¾úÀ¸¸ç, Çü¼ºµÈ »ó¾ÆÁú ³»¿¡ ¼¼Æ÷°¡ ÇÔÀԵǴ ¾ç»óÀ» º¸¿´´Ù.

4.NFI-C (-/-)»ýÁÖÀÇ ±¸Ä¡¿¡¼­ Ä¡°üºÎÀ§ÀÇ »ó¾Æ¸ð¼¼Æ÷¿¡¼­´Â DSPP°¡ °­ÇÏ°Ô ¹ßÇöµÇ¾úÀ¸³ª. Ä¡±ÙºÎÀ§ÀÇ »ó¾Æ¸ð¼¼Æ÷¿¡¼­´Â ¹ßÇöµÇÁö ¾Ê¾Ò´Ù. ¶ÇÇÑ NFI-C(-/-) »ýÁã¿¡¼­ ÀýÄ¡ÀÇ ¼øÃø »ó¾Æ¸ð¼¼Æ÷¿¡¼­´Â DSPP°¡ ¾àÇÏ°Ô ¹ßÇöµÇ¾ú´Ù.

5. Á¤»ó »ýÁã¿¡¼­ ÀýÄ¡ÀÇ »ó¾Æ¸ð¼¼Æ÷¿¡¼­´Â BSP°¡ ¹ßÇöµÇÁö ¾Ê¾ÒÀ¸³ª. NFI-C (-/-) »ýÁã¿¡¼­´Â BSP°¡ °­ÇÏ°Ô ¹ßÇöµÇ¾ú´Ù.

ÀÌ»óÀÇ °á°ú¸¦ Á¾ÇÕÇÏ¿© º¼ ¶§ NFI-C°¡ °á¼ÕµÈ °æ¿ì »ó¾Æ¸ð¼¼Æ÷°¡ °ñ¸ð¼¼Æ÷·Î ºÐÈ­µÇ´Â Ç¥ÇöÇüÀÇ º¯È­¸¦ º¸ÀÌ´Â °ÍÀ¸·Î »ç·áµÈ´Ù.

Nuclear factor I (NFI) exists in the odontoblast and osteoblast.NFI-C null mice demonstrated aberrant odontoblast differentiation, abnormal dentin formation, and molar lacking roots.

The purpose of this study was to examine phenotype of the aberrant odontoblast in NFI-C null mice and to evaluate the expression of DSPP and BSP mRNAs in NFI-C null mice with in-situ hybridization.

The results were as follows:

1.In the NFI-C (-/-) mice, the crown dentin of molar showed normally formation, but there was no root dentin.

2.In the NFI-C (-/-) mice, the labial dentin of mandibular incisors showed relatively a lot of dentin formation, but the lingual dentin showed defect.

3.In the NFI-C (-/-) mice, the odontoblast of mandibular incisors revealed abnormal shape and trapped in osteodentin-like mineralized tissue.

4.In the NFI-C (-/-) mice, the odontoblast in the crown dentin of molars showed strong expression of DSPP, the odontoblast in the root dentin of molars was not expression of DSPP. In the NFI-C (-/-) mice the odontoblast in the mandibular incisors showed weekly expression of DSPP.

5.In the wild mice, the odontoblasts of mandibular incisors were not expression of BSP, but in the NFI-C (-/-) mice the odontoblast of mandibular incisors showed strong expression of BSP.

These results suggest that odontoblst in the NFI-C (-/-) mice changes the phenotype into osteoblast.

Å°¿öµå

NFI-C;»ó¾Æ¸ð¼¼Æ÷ ºÐÈ­;DSPP;BSP
NFI-C;Odontoblast differentiation;DSPP;BSP

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