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Interleukin-1¥â¿¡ ÀÇÇÏ¿© Ä¡ÁÖÀδ뼼Æ÷¿¡¼­ À¯¸®µÈ cytokineÀÌ ÆÄ°ñ¼¼Æ÷Çü¼º¿¡ ¹ÌÄ¡´Â ¿µÇâ

FORMATION OF OSTEOCLASTS BY CYTOKINES RELEASED FROM PERIODONTAL LIGAMENT CELLS IN RESPONSE TO INTERLEUKIN-1 B

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±èż±/Tai-Sun Kim À¯À±Á¤/°û¿ù¾Æ/À̽ÂÀÏ/ÀÌÁ¾°©/Yun-Jung Yu/Wall-Ah Gwak/Sung-lll Lee/Jong-Gap Lee

Abstract

°á·Ð
IL-1¥â°¡ Ä¡ÁÖÀδ뼼Æ÷ÀÇ °ñÈí¼ö À¯µµ cytokine »ý¼º¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ±Ô¸íÇÏ°íÀÚ IL-1¥â
°¡ Ä¡ÁÖÀδ뼼Æ÷ÀÇ 1) IL-1¥â, IL-6 ¹× GM-CSF mRNA ¹ßÇö ¹× 2) IL-6 ¹× GM-CSF »ý
¼º¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» °üÂûÇÏ¿´À¸¸ç, 3) IL-6°¡ ¸¶¿ì½º °ñ¼ö¼¼Æ÷ÀÇ ÆÄ°ñ¼¼Æ÷ Çü¼º¿¡ ¹ÌÄ¡´Â
¿µÇâÀ» Æò°¡ÇÏ¿´´Ù. mRNAÀÇ ¹ßÇöÀº ¿ªÀü»ç ÁßÇÕÈ¿¼Ò ¿¬¼â¹ÝÀÀ¹ýÀ¸·Î È®ÀÎÇÏ¿´À¸¸ç,
cytokineÀÇ ³óµµ´Â ¸é¿ªÈ¿¼ÒÈíÂø¹ýÀ¸·Î ÃøÁ¤ÇÏ¿´´Ù. ¶ÇÇÑ °ñ¼ö¼¼Æ÷¸¦ ¹è¾çÇÑ´ÙÀ½, cytokine
¿¡ ÀÇÇÏ¿© Çü¼ºµÈ ÆÄ°ñ¼¼Æ÷´Â tartrate ÀúÇ×¼º »ê¼º ÀλêºÐÇØÈ¿¼Ò¸¦ ¿°»öÇÏ¿© È®ÀÎÇÏ¿´À¸¸ç
À̵éÀ» ºÐ¼®ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. IL-1¥â´Â Ä¡ÁÖÀδ뼼Æ÷·ÎºÎÅÍ IL-1¥â, IL-6 ¹× GM-CSF mRNAÀÇ ¹ßÇöÀ» À¯µµÇÏ¿´´Ù.
2. 0.05 ng/mlÀÇ IL-1¥â·Î Ä¡ÁÖÀδ뼼Æ÷¸¦ ÀÚ±ØÇÑ °æ¿ì IL-6 (3167¡¾246 pg/ml) ¹×
GM-CSF (126¡¾48 pg/ml)°¡ ÃÖ´ë·Î »ý¼ºµÇ¾ú´Ù.
3. IL-1¥â (10.05 ng/ml)·Î Ä¡ÁÖÀδ뼼Æ÷¸¦ ÀÚ±ØÇÑ °æ¿ì IL-6 ¹× GM-CSF´Â °¢°¢ 2 ½Ã°£
¹× 4 ½Ã°£ ÈÄ »ý¼ºµÇ¾úÀ¸¸ç 8½Ã°£ ±îÁö »ý¼º·®ÀÌ °è¼Ó Áõ°¡ÇÏ¿´´Ù.
4. IL-6 (100 ng/ml)´Â soluble IL-6 receptor (sIL-6R, 100 ng/ml)°¡ ÀÖ´Â °æ¿ì¿¡¸¸
TRAP ¾ç¼º´ÙÇÙ¼¼Æ÷ÀÇ Çü¼º (10.2¡¾2.9°³)À» Áõ°¡½ÃÄ×´Ù.
ÀÌ»óÀÇ °á°ú·Î ¹Ì·ç¾î IL-1¥â´Â Ä¡ÁÖÀδ뼼Æ÷·ÎºÎÅÍ ÆÄ°ñ¼¼Æ÷ºÐÈ­ ÃËÁøÀÎÀÚÀÎ IL-1¥â,
IL-6 ¹× GM-CSFÀÇ »ý¼ºÀ» À¯µµÇÏ¿© °ñÈí¼ö¸¦ ¾ß±â½ÃÅ°¸ç, ÀÌ °úÁ¤¿¡¼­ Ä¡ÁÖÀδ뼼Æ÷·ÎºÎ
ÅÍ À¯¸®µÈ IL-6´Â sIL-6R¾Æ ÀÇÇؼ­¸¸ ÆÄ°ñ¼¼Æ÷Çü¼ºÀ» ÃËÁøÇÏ´Â °ÍÀ¸·Î »ý°¢µÈ´Ù. µû¶ó¼­
ÀÌ¿Í °°Àº IL-19¿¡ ÀÇÇÑ °ñÈí¼ö°úÁ¤ ÀÌ ±³Á¤·Â¿¡ ÀÇÇÑ Ä¡Á¶°ñ Èí¼ö¿Í ¹ÐÁ¢ÇÏ°Ô ¿¬°èµÇ¾î
ÀÖÀ» °ÍÀ¸·Î ÃßÃøµÈ´Ù.
#ÃÊ·Ï#
Tooth movement is induced by bone remodeling during orthodontic treatment. Bone
remodeling is regulated by various cytokines. Especially interleukin-1 (IL-1¥â), a
cytokine present in periodontal ligaments of experimentally moved teeth, elicits bone
resorption. In these processes, IL-1 -induced bone resorption is mediated by
interleukin-6 (IL-6) and granulocyte macrophage-colony stimulating factor (GM-CSF)
secreted from osteoblasts. Periodontal ligament cells, which function as an anchorage for
tooth, lie between alveolar bone and cementum. Therefore cytokines produced in the
periodontal ligament (PDL) cells may also directly affect alveolar bone resorption in
orthodontic tooth movement. Here I have examined whether PDL cells empress IL-1¥â,
interleukin-6 (IL-6) and granulocyte macrophage-colony stimulating factor (GM-CSF)
mRNA and secrete those cytokines in response to IL-1¥â. Finally I have investigated
whether IL-6 produced from PDL cells induces osteoclast formation in mouse bone
marrow cell cultures. The expression of mRNA was estimated by polymerase chain
reaction (PCR). The concentration of cytokines was quantified using enzyme linked
immunosorbent method and the osteoclasts in bone marrow cultures were identified by
tartrate resistant acid phosphatase (TRAP) stain.
As results of these studies, IL-1¥â stimulated the expression of IL-1¥â, IL-6 and
GM-CSF mRNA in PDL cells. 0.05 ng/ml IL-1¥â also induced maximum production of
IL-6 and GM-CSF in these cells. After an addition of IL-1¥â (0.05 ng/ml), IL-6
production increased from 2 hours to 8 hours and GM-CSF production also increased
from 4 hours to 8 hours. IL-6 (100 ng/ml) increased the number of TRAP positive
multinucleated cells in the presence of soluble interleukin-6 receptor (sIL-6R, 100 ng/ml).
These results suggest that IL-1¥â may stimulate alveolar bone resorption by inducing
IL-6 and GM-CSF production in PDL cells which enhance osteoclast differentiation and
IL-6 enhances osteoclast formation in the presence of sIL-6R. And this process by IL-1
¥â may be closely associated with alveolar bone resorption induced by orthodontic force.

Interleukin-1¥â; Interleukin-6; Granulocyte macrophage-colony stimulatingfactor; Soluble interleukin-6 recetor; Periodontal ligament cells; Osteoclast differentiation; Orthodontic force; Alveolar bone resorption;

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