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Comparison of Mineralization in Each Passage of Dental Pulp Stem Cells from Supernumerary Tooth

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½ÅÁö¼±, ±èÁ¾ºó,
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½ÅÁö¼± ( Shin Ji-Sun ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÁ¾ºó ( Kim Jong-Bin ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç

Abstract

º» ¿¬±¸´Â »ó¾Ç Á¤Áß°úÀ×Ä¡¿¡¼­ ¾òÀº Ä¡¼öÀ¯·¡ Áٱ⼼Æ÷(human dental pulp stem cells from supernumerary tooth, sDPSCs)¸¦ ´ë»óÀ¸·Î ºÐÈ­´ÉÀÇ º¯È­ Ư¼ºÀ» ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.

Àü½Å º´·ÂÀÌ ¾ø´Â 6¼¼ ³²ÀÚ¾ÆÀÌ »ó¾Ç ÁßÀýÄ¡¿Í ÃøÀýÄ¡ »çÀÌ¿¡ ¸Åº¹ µÈ °úÀ×Ä¡¸¦ ¹ßÄ¡ÇÏ¿© sDPSCs¸¦ ¾ò¾ú´Ù. ¼¼Æ÷µéÀ» 16°è´ë±îÁö ¹è¾çÇÏ¿´°í, 1 - 8°è´ë´Â Young±ºÀ¸·Î 9 - 16°è´ë´Â Old±ºÀ¸·Î ³ª´©¾ú´Ù. °¢ °è´ë ¹è¾ç¿¡ ¼Ò¿äµÈ ½Ã°£Àº Young±º¿¡¼­´Â 2.25 ¡¾ 0.46ÀÏ, Old±º¿¡¼­´Â 3.25 ¡¾ 0.46ÀÏÀ» º¸¿´À¸¸ç, ÀÌ´Â Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸¿´´Ù(p < 0.05). °¢ °è´ë º°·Î ¼¼Æ÷ ÇüŸ¦ °üÂûÇÏ°í ºÐÈ­¸¦ À¯µµÇÑ ÈÄ Alizarin-red solution ¿°»öÀ» ÅëÇØ °ñ¸ð¼¼Æ÷(odontoblast)·Î ºÐÈ­µÇ´Â Á¤µµ¸¦ °üÂûÇÏ¿´´Ù. 1, 8, 9°è´ë¿¡¼­ ºÐÈ­Á¦¸¦ ó¸®ÇÏÁö ¾ÊÀº ¼¼Æ÷ÀÇ ÇüÅ¿¡¼­´Â ¹æÃßÇüÀÇ ¼¶À¯¸ð¼¼Æ÷¿Í À¯»çÇÑ ±æÂßÇÑ ÇüÅ·Π°ú¸³(nodule)ÀÌ Àû¾úÁö¸¸, 16°è´ë¿¡¼­´Â ¼¼Æ÷ÀÇ Å©±â°¡ Ä¿Áö°í ³ÐÀûÇÑ ÇüÅ·Πº¯ÇÏ°í °ú¸³µµ ¸¹¾ÆÁ³´Ù. 1°è´ë´Â ºÐÈ­ 7ÀϺÎÅÍ °ú¸³ÀÌ °üÂûµÇ¸ç, 8°è´ë¿¡¼­´Â 14ÀÏ µ¿¾È ºÐÈ­Á¦¸¦ ó¸®ÇÑ ÈÄ °ú¸³ÀÌ ¸íÈ®È÷ °üÂûµÇ¾ú´Ù. ±×·¯³ª 9°è´ë ÀÌÈÄ¿¡¼­´Â °ú¸³ÀÇ ºóµµ°¡ »ó´çÈ÷ °¨¼ÒµÇ¾ú´Ù. ARS ¿°»ö¿¡¼­´Â 1, 8°è´ë´Â ÁøÇÑ ºÓÀº»öÀ¸·Î ¿°»öµÇ¾úÀ¸³ª, 9, 16°è´ë´Â ¿°»öÀÌ ¿¶°Ô µÇ¾ú´Ù.

À̸¦ ÅëÇØ sDPSCs´Â 8°è´ë ÀÌÀüÀÇ ¼¼Æ÷¸¦ Áٱ⼼Æ÷ÀÇ ¿øõÀ¸·Î ¿ì¼± °í·ÁÇÏ´Â °ÍÀÌ ÁÁ´Ù°í »ç·áµÈ´Ù.

The purpose of this study was to evaluate the difference of differentiation potential in each passage of dental pulp stem cells from supernumerary tooth (sDPSCs). The sDPSCs were obtained from a healthy 6-year-old male patient under the guidelines and got the informed consent. Cells were cultured until passage number 16 and divided into two groups; 1 - 8 passages as a young group and 9 - 16 passages as an old group. It was taken 2.25 ¡¾ 0.46 days in a young group and 3.25 ¡¾ 0.46 days in an old group to propagate cells of each passage until confluence and there were statistically significant differences between two groups (p < 0.05). In every passage, cell morphology was observed with microscope and evaluated the capacity to form high levels of minerals by alizarin red solution staining after treating differentiation medium. Fibroblast-like, spindle shaped, elongated cells and a few nodules were found in uninduced cultures of passage number 1, 8 and 9. But at 16 passage culture, cell size became larger and broader and observed with more nodules. After inducing differentiation, mineralized nodules were detected at the first passage of 7th day culture whereas at the 8 passage culture, nodules were seen clearly at 14th day culture. In addition, the amount of mineralized nodules were remarkably decreased after passage 9. From the data presented in this study, it is recommended to use sDPSCs of passage number within 8 for utilizing as stem cells.

Å°¿öµå

°è´ë; °úÀ×Ä¡; Ä¡¼ö; Áٱ⼼Æ÷
Passage;Supernumerary tooth;Dental Pulp;Stem cells

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