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Çѱ¹ÀÎ ¼â°ñ µÎ°³ ÀÌÇü¼ºÁõ °¡Á·¿¡¼­ÀÇ RUNX2 À¯ÀüÀÚ µ¹¿¬º¯ÀÌ

A Novel RUNX2 Mutation in a Korean Family with Cleidocranial Dysplasia

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ÀÌÁö¿ø, ¼ÛÁö¼ö, ½ÅÅÍÀü, ÇöÈ«±Ù, ±è¿µÀç, ÀÌ»óÈÆ, ±èÁ¾ºó, ±èÁ¤¿í,
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ÀÌÁö¿ø ( Lee Ji-Won ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
¼ÛÁö¼ö ( Song Ji-Soo ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
½ÅÅÍÀü ( Shin Teo-Jeon ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
ÇöÈ«±Ù ( Hyun Hong-Keun ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
±è¿µÀç ( Kim Young-Jae ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
ÀÌ»óÈÆ ( Lee Sang-Hoon ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÁ¾ºó ( Kim Jong-Bin ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÁ¤¿í ( Kim Jung-Wook ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

¼â°ñ µÎ°³ ÀÌÇü¼ºÁõ(Cleidocranial dysplasia)Àº »ó¿°»öü ¿ì¼ºÀÇ À¯ÀüÁúȯÀ¸·Î, µÎ°³°ñ °£ ºÀÇÕ Áö¿¬, ¼â°ñÀÇ ÀÌÇü¼º, °úÀ×Ä¡, ¿µ±¸Ä¡¸ÍÃâ Áö¿¬ µîÀ» Ư¡À¸·Î ÇÑ´Ù. °æÁ¶Á÷ Çü¼º Á¶Àý ÀÎÀÚÀÎ Runt-related transcription factor 2 (RUNX2 )ÀÇ µ¹¿¬º¯ÀÌ°¡ ¼â°ñ µÎ°³ ÀÌÇü¼ºÁõÀ» À¯¹ßÇÏ´Â ÁÖ¿ä ¿äÀÎÀ¸·Î º¸°íµÇ°í ÀÖ´Ù. ÀÌ ¿¬±¸´Â Ä¡¾Æ ¸ÍÃâ Áö¿¬ÀÌ °üÂûµÇ´Â ¼â°ñ µÎ°³ ÀÌÇü¼ºÁõ °¡°è¿¡¼­ ºÐÀÚÀ¯ÀüÇÐÀû ¿øÀÎÀ» ±Ô¸íÇÏ°íÀÚ ÇÏ¿´´Ù. 23¼¼ ¿©¼º ȯÀÚ¿Í ±× ¾î¸Ó´Ï¸¦ ´ë»óÀ¸·Î ÀÓ»ó °Ë»ç ¹× ¹æ»ç¼± °Ë»ç¸¦ ÁøÇàÇÏ¿´°í RUNX2 À¯ÀüÀÚÀÇ ¿°±â ¼­¿­À» ºÐ¼®ÇÏ¿´´Ù. ´ë»óÀÚ¸ðµÎ¿¡¼­ 3¹ø exon ³»ÀÇ ´ÜÀÏ ¿°±â °á¼Õ µ¹¿¬º¯ÀÌ(NM_001024630.4: c.357delC)¸¦ È®ÀÎÇÏ¿´´Ù. ÀÌ·Î ÀÎÇØ frameshift°¡ ¹ß»ýÇÏ¿© Á¶±âÁ¾°á ÄÚµ·ÀÌ Çü¼ºµÉ °ÍÀ¸·Î ¿¹ÃøµÇ¸ç[p.(Asn120Thrfs*24)], ÀÌ·Î ÀÎÇÑ RUNX2 ´Ü¹éÁúÀÇ ±â´É ¼Õ»óÀÌ ÇØ´ç °¡°è¿¡¼­ ³ªÅ¸³­ ¿µ±¸Ä¡ ¸ÍÃâÁö¿¬ÀÇ º´ÀÎÀÌ µÇ¾úÀ» °ÍÀ¸·Î ¿©°ÜÁø´Ù.

Cleidocranial dysplasia (CCD) is an autosomal-dominant disease characterized by the delayed closure of cranial sutures, defects in clavicle formation, supernumerary teeth, and delayed tooth eruption. Defects in the Runt-related transcription factor 2 (RUNX2 ), a master regulator of bone formation, have been identified in CCD patients. The aim of this study was to identify the molecular genetic causes in a CCD family with delayed tooth eruption. The 23-year-old female proband and her mother underwent clinical and radiographic examinations, and all coding exons of the RUNX2 were sequenced. Mutational analysis revealed a single nucleotide deletion mutation (NM_001024630.4 : c.357delC) in exon 3 in the proband and her mother. The single C deletion would result in a frameshift in translation and introduce a premature stop codon [p.(Asn120Thrfs*24)]. This would result in the impaired function of RUNX2 protein, which may be the cause of delayed eruption of permanent teeth in the family.

Å°¿öµå

RUNX2; Cleidocranial dysplasia; Deletion mutation; Frameshift; Delayed eruption

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