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The expression pattern of FMRP and MAP-lb during tooth development

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±èÇöÁø ( Kim Hyun-Jin ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­ÇغÎÇб³½Ç

Abstract

Fragile X Mental Retardation-1 (FMR-1) À¯ÀüÀÚ¿¡ ÀÇÇØ Çü¼ºµÇ´Â Fragile X mental retardation protein (FMRP)´Â RNA-binding ´Ü¹éÁúÀÌ¸ç ¹ø¿ª ¾ïÁ¦ÀÚ (translation repressor) ±â´ÉÀÌ ¾Ë·ÁÁ® ÀÖ´Ù. ¿°»öü ³» FMR-1 À¯ÀüÀÚ º¯ÀÌ·Î ÀÎÇÑ FMRP ¹ßÇö °¨¼Ò´Â Èñ±ÍÁúȯÀ¸·Î ºÐ·ùµÇ´Â Ãë¾à X ÁõÈıº (Fragile X Syndrome)À» À¯¹ßÇϸç Ãë¾à X ÁõÈıºÀÇ Ä¡¾Æ Çü¼º´Ü°è¿¡¼­ Ä¡¾Æ¼º¼÷ÀÌ °¡¼ÓÈ­µÊÀ» º¸°íÇÏ¿´´Ù. Microtubule-Associated Protein lb (MAP-lb)´Â ½Å°æ¼¼Æ÷ÀÇ ½Å°æµ¹±â¿Í ½Ã³À½º Çü¼º¿¡¼­ ÀÛ¿ëÇϸç FMRP¿¡ ÀÇÇÏ¿© ¹ø¿ª ¾ïÁ¦¸¦ Á¶ÀýÀ» ¹Þ´Â Ç¥Àû ¹°ÁúÀÌ´Ù. ¹è¾çµÈ »ó¾ÆÁú¸ð¼¼Æ÷¸¦ ÀÌ¿ëÇÑ FMRP ¹ßÇö ¿¬±¸¿¡¼­´Â »ó¾ÆÁú¸ð¼¼Æ÷ÀÇ ¼¼Æ÷¸·°ú ¼¼Æ÷µ¹±â¿¡¼­ °üÂûµÇ¾ú´Ù. ¸é¿ª Á¶Á÷È­Çйý¿¡¼­ MAP - lb ´Â Á¾½Ã±â Ä¡ ¹èÀÇ ±³µÎÁ¤ »ó¾ÆÁú¸ð¼¼Æ÷¿¡¼­ °­ÇÑ ¹ßÇöÀ» ½ÃÀÛÇÏ¿© Ä¡°æºÎ¿¡ À̸£´Â ´Ü°èÀû °¨¼Ò¸¦ Á¦½ÃÇÏ¿´´Ù. ´õºÒ¾î ¿ì½ÄÄ¡¾Æ¿¡¼­ ¼öº¹»ó¾ÆÁú Çü¼ºÀ» À§ÇØ »õ·Ó°Ô ºÐÈ­ÇÏ´Â odontoblast-like cell¿¡¼­ MAP-lb°¡ ¹ßÇöµÇ¾ú´Ù. º» Á¾¼³¿¡¼­´Â ¼±Çà º¸°í¸¦ ¹ÙÅÁÀ¸·Î Ä¡¾Æ¹ß»ý°úÁ¤¿¡¼­ ¹ßÇöµÇ´Â FMRP¿Í MAP-lbÀÇ °íÂûÀ» ÅëÇÏ¿©
Ä¡ ¾Æ ¹ß»ý¿¡¼­ °ü·Ã¼ºÀ» ¾Ë¾Æº¸°íÀÚ ÇÑ´Ù.

The FMRP {Fragile XMental Retardation Protein) is the FMR-\(Fragile XMental Retardation-1) gene product and a selective RNA-binding molecule as a translation repressor. The lack of FMRP caused by the disorder of FMR-1 gene results in fragile X syndrome (FXS) that exhibits advanced dental maturity. Microtu?bule-associated protein lb (MAP-lb) plays important roles in synapse and neurite development in the nervous system. In a previous study, it was reported that FMRP controls MAP-lb translation during the neural develop?ment. In cultured odontoblasts, a positive immunoreactivity of FMRP was shown in the plasma membrane of the odontoblast cell bodies and at the base of odontoblast cell processes. The immunohistochemical staining of MAP-lb at the bell stage during tooth development was detected in polarized odontoblasts with a decreasing pattern from the tip of the cusp to the cervical region. In carious teeth, MAP-lb was positively expressed in the newly differentiated odontoblast-like cells. Therefore, this review suggests a close relationship between FMRP and MAP-lb during tooth development.

Å°¿öµå

FMRP; MAP-lb; Ä¡¾Æ ¹ß»ý
FMRP; MBP-lb; Tooth development

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