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Characteristics of Supernumerary Tooth-derived Pulp Cells during Long-term Culture

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Abstract

ÀÌ ¿¬±¸´Â °úÀ×Ä¡ Ä¡¼ö·ÎºÎÅÍ ¾òÀº ¼¼Æ÷¸¦ ´õ ÀÌ»ó Áõ½ÄÇÏÁö ¸øÇÑ´Ù°í ÆÇ´ÜµÉ ¶§±îÁö °è´ë¹è¾çÀ» ½ÃÇàÇϸ鼭 Ãʱâ, Áß±â, Èıâ°è´ëÀÇ Æ¯¼ºÀ» ºñ±³ ºÐ¼®ÇÏ¿´´Ù. 2¸íÀÇ °Ç°­ÇÑ 6¼¼ ³²¾Æ·ÎºÎÅÍ 3°³ÀÇ °úÀ×Ä¡¸¦ ¹ß°ÅÇÏ¿© Ä¡¼öÁ¶Á÷¿¡¼­ Áٱ⼼Æ÷¸¦ ¾ò¾ú´Ù. À̸¦SNT1(supernumerary tooth 1), SNT2¶ó°í ÇÏ°í, ´Ù¸¥ ¾ÆÀ̷κÎÅÍ ¾òÀº °úÀ×Ä¡´Â SNT3·Î ¸í¸íÇÏ¿´´Ù. SNT1°ú SNT2´Â ¶È °°Àº ½Ã°£À¸·Î °è´ë¹è¾ç µÇ¾ú°í SNT3Àº Á¶±Ý ºü¸£°Ô °è´ë¹è¾ç µÇ¾ú´Ù. Àüü °è´ë¹è¾çÀÇ Æò±Õ ±â°£Àº 3.6 ¡¾ 1.1ÀÏÀ̾ú´Ù. ÃÑ 23.3 ¡¾ 0.6°è´ë±îÁö ¹è¾çµÇ¾úÀ¸¸ç, 83ÀÏÀÌ ¼Ò¿äµÇ¾ú´Ù. À̸¦ °è´ë¸¦ ±âÁØÀ¸·Î 3µîºÐÇÏ¿© ¼¼ ±ºÀ¸·Î ³ª´©¾ú´Ù. I±º¿¡¼­ II±º±îÁö °è´ë¹è¾ç¿¡ ¼Ò¿äµÈ ½Ã°£ Áõ°¡À²Àº 11.90%¿´À¸³ª, II±º¿¡¼­ III±º »çÀÌÀÇ Áõ°¡À²Àº 28.62%·Î 2.4¹è°¡ Áõ°¡ÇÏ¿´´Ù. 22°è´ë±îÁöÀÇ ¹è¾ç±â°£¿¡ ´ëÇÑ ¼Ò¿ä ½Ã°£À» ȸ±ÍºÐ¼®ÇÑ °á°ú y = 0.1169x + 2.25 (r ©÷ = 0.4778)°ú y = 0.1169x + 2.0 (r ©÷ = 0.6444)À¸·Î Ã߷еǾú´Ù. °úÀ×Ä¡ Ä¡¼öÀ¯·¡ Áٱ⼼Æ÷ÀÇ Á¤»ó ¹è¾çÀº 20°è´ë±îÁö °¡´ÉÇÒ °ÍÀ¸·Î ÆǴܵǾúÀ¸¸ç, Èıâ·Î ³Ñ¾î°¡¸é °è´ë¹è¾ç ½Ã°£ÀÌ 2.4¹è Áõ°¡¿´´Ù. Èı⠰è´ë¿¡¼­´Â ¼¼Æ÷³» ºÎÀ¯¹°ÀÌ Áõ°¡ÇÏ¿´°í, Çüŵµ ¼±ÇüÀ¸·Î º¯ÇüµÇ´Â ¾ç»óÀÌ °üÂûµÇ¾ú´Ù.

This study was conducted to investigate the characteristics of subculture times in the early, middle, and late passages by measuring the time under subculture until it was judged that the supernumerary tooth-derived pulp stem cells (sDPSCS) were no longer proliferating. Three supernumerary teeth from two healthy six-years old boys were extracted and stem cells were obtained from the pulp tissue. This was called SNT1 (supernumerary tooth 1), SNT2, and the supernumerary tooth from another child was named SNT3. SNT1 and 2 were subcultured at the same time and SNT3 was subcultured a little faster. The mean time of complete subculture was 3.6 ¡¾ 1.1 days. Total passages were cultured up to 23.3 ¡¾ 0.6 and took 83 days. These were divided into three groups based on the passage. The increase rate of time taken in subculture between group I and group II was 11.9%, but the rate between group II and group III was 28.6%, which was 2.4 times increased. The time taken between passages during long-term subculture up to 22 passages shows a regressive pattern y = 0.1169x + 2.25 and y = 0.1169x + 2.0. In conclusion, the passage time of SPSCs increased in late passages, and it shows a similar pattern.

Å°¿öµå

Supernumerary tooth; Pulp stem cell; Passage

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