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Characteristics of MSX1 gene in Korean nonsyndromic cleft lip and palate individuals

Korean Journal of Orthodontics 2008³â 38±Ç 2È£ p.133 ~ 143
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ÀÌÇØ°æ ( Lee Hae-Kyung ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°ú±³Á¤Çб³½Ç
±è¼º½Ä ( Kim Seong-Sik ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°ú±³Á¤Çб³½Ç
¼Õ¿ì¼º ( Son Woo-Sung ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°ú±³Á¤Çб³½Ç

Abstract

ÀÌ ¿¬±¸´Â Çѱ¹ÀÎ ºñÁõÈıº¼º ±¸¼ø±¸°³¿­ÀÚ¿¡¼­ ±¸¼ø±¸°³¿­°ú Ä¡¾Æ°á¼ÕÀÇ Áß¿äÇÑ ¿øÀÎ Áß Çϳª·Î ÀǽɵǴ MSX1 À¯ÀüÀÚ(locus chromosome 4p16)ÀÇ Æ¯¼ºÀ» ¹àÈ÷±â À§ÇØ ½ÃÇàµÇ¾ú´Ù. 1998³âºÎÅÍ 2002³â±îÁö ºÎ»ê´ëÇб³º´¿ø Ä¡°ú±³Á¤°ú¿¡ ³»¿øÇÑ 36¸í(³²ÀÚ:23, ¿©ÀÚ:13)ÀÇ ºñÁõÈıº¼º ±¸¼ø¼ö °³¿­ÀÚ¸¦ ´ë»óÀ¸·Î ÇÏ¿´´Ù. ¸ðµç ´ë»óÀÇ Ç÷¾×À» äÃëÇÏ¿© ÁßÇÕ È¿¼Ò¿¬¼â¹ÝÀÀ(polymerase chain reaction)¿¡ ±âÃÊÇÑ À¯ÀüÀÚ ºÐ¼®À» ½ÃÇàÇÏ¿©, MSX1 À¯ÀüÀÚ¸¦ ÁõÆøÇÏ°í, ¿°±â¼­¿­À» ºÐ¼®ÇÏ¿´À¸¸ç, Ã߷еǴ ´Ü¹éÁú »ý¼º¹°¿¡ ´ëÇؼ­µµ ¿¬±¸ÇÏ¿´´Ù. ÀÌ¹Ì ¹àÇôÁø Homo sapiens MSX1, accession number AF426432¿Í NP_002439¸¦ Âü°í·Î ÇÏ¿© ºñ±³ ºÐ¼®ÇÑ °á°ú °øÅëÀûÀÎ ´ÜÀÏ ¿°±â ´ÙÇü¼ºÀÌ Á¸ÀçÇÏ¿´´Ù. exon 1¿¡¼­, 253¹ø° ºÎÀ§ÀÇ ¿°±â "A"°¡ "G"·Î ġȯµÇ¾ú°í, 255¹ø° ºÎÀ§¿¡¼­ ¿°±â "G"°¡ »ðÀԵǾú´Ù. exon 2¿¡¼­ 11¹ø° ºÎÀ§¿¡¼­ ¿°±â"C"°¡ "A"·Î ġȯµÇ¾ú°í, 351ºÎÀ§¿¡¼­ ¿°±â"T" ¶Ç´Â "G"°¡ »ðÀԵǾú°í 352ºÎÀ§¿¡¼­ ¿°±â"T" ¶Ç´Â "A"°¡ »ðÀԵǾú´Ù. Çѱ¹ÀÎ ºñÁõÈıº¼º ±¸¼ø±¸°³¿­ÀÚ¿¡¼­ ´Ù¸¥ ÀÎÁ¾¿¡¼­ ¹ß°ßµÈ µ¹¿¬º¯ÀÌ¿Í´Â ´Ù¸¥ "Thr85A1a" missense µ¹¿¬º¯ÀÌ°¡ ¹ß°ßµÇ¾ú´Ù. ÀÌ´Â Çѱ¹ÀÎ ºñÁõÈıº¼º ±¸¼ø±¸°³¿­¿¡¼­µµ MSX1 À¯ÀüÀÚ°¡ Áß¿äÇÑ ¿øÀÎÀÌ µÉ ¼ö ÀÖ°í Çѱ¹ÀÎÀÇ µ¶Æ¯ÇÑ µ¹¿¬º¯ÀÌ°¡ Á¸ÀçÇÑ´Ù´Â °¡´É¼ºÀ» Á¦½ÃÇÑ °ÍÀÌ´Ù. ±×·¯³ª, ±¸°³¿­ ºÎÀ§ÀÇ Ä¡¾Æ°á¼Õ°ú °ü·ÃÇؼ­´Â ¾î¶°ÇÑ À¯ÀüÀÚ Æ¯Â¡µµ °üÂûµÇÁö ¾Ê¾Ò´Ù.

Objective: This study was performed to identify the characteristics of the MSX1 gene (locus chromosome 4p16) in Korean nonsyndromic cleft lip and palate (CL/P), which is assumed to be a major candidate gene acting as a causal factor in nonsyndromic CL/P and missing teeth.

Methods: The 36 individuals (23 males and 13 females) who had visited the department of orthodontics at from 1998 to 2002 and who had nonsyndromic CL/P were included in the study. Using a PCR-based assay, the MSX1 gene was amplified, sequenced, and searched for inferred protein products (Reference: Homo sapiens MSX1, accession number AF426432 and NP_002439). The common single nucleotide polymorph isms were observed.

Results: In exon 1, nucleotide "A" of the 253 basepair (bp) region was substituted for "G", and in the 255 bp region, nucleotide "G" was inserted. In exon 2, nucleotide "C" of the 11 bp region was substituted for "A", and "T" or "G" was inserted into the 351 bp region whereas "T" or "A" was inserted into the 352 bp region. In protein analysis, "Thr85Ala" missense mutation was found. The "Thr85Ala" missense mutation in this study is different from those of studies using subjects of other races.

Conclusions: The results suggest that there is specific mutation of MSX1 in Korean and it plays an important role in Korean nonsyndromic CL/P. However, any distinct genetic polymorphisms between CL/P with missing teeth in the cleft region and CL/P without missing teeth could not be found.

Å°¿öµå

MSX 1 À¯ÀüÀÚ;Çѱ¹ÀÎ ºñÁõÈıº¼º ±¸¼ø±¸°³¿­;Ä¡¾Æ°á¼Õ
MSX1 gene;Korean nonsyndromic cleft lip and palate;Missing teeth

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