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Prevotella nigrescens lipopolysaccharides·Î ÀÚ±ØµÈ MG63 ¼¼Æ÷¿¡¼­ ºÐºñµÇ´Â ±âÁú±Ý¼Ó´Ü¹éÁú MMP-1°ú TIMP-1ÀÇ ¼öÁØ¿¡ °üÇÑ ¿¬±¸

MMP-1 and TIMP-1 production in MG-63 cells stimulated with Prevotella nigrescens Lipopolysaccharide

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Abstract

º» ¿¬±¸ÀÇ ¸ñÀûÀº Prevotella nigrescens lipopolysaccharides (LPS)·Î ÀÚ±ØµÈ MG63 osteosarcoma ¼¼Æ÷¿¡¼­ »ý¼º, ºÐºñµÇ´Â ±âÁú±Ý¼Ó´Ü¹éÈ¿¼ÒÀÎ MMP-1°ú ±× ¾ïÁ¦Á¦ÀÎ TIMP-1À» ÃøÁ¤ÇÒ »Ó¾Æ´Ï¶ó ¼ö»êÈ­Ä®½·À¸·Î ó¸®ÇÑ P. nigrescens LPS¿¡ ÀÇÇÑ ±âÁú±Ý¼Ó´Ü¹éÈ¿¼Ò¿Í ±× ¾ïÁ¦Á¦ÀÇ ºÐºñ¼öÁØÀÇ º¯È­¸¦ ¾Ë¾Æº¸´Âµ¥ ÀÖ´Ù. Çø±â¼º Á¶°Ç¿¡¼­ ¹è¾çÇÑ P. nigrescens·ÎºÎÅÍ LPS¸¦ ÃßÃâÇÏ¿© ¼ø¼öÁ¤Á¦ÇÑ ´ÙÀ½ 0, 1 ±×¸®°í 10 §¶/mlÀÇ LPS ³óµµ·Î MG63 ¼¼Æ÷¸¦ ÀÚ±ØÇϰųª ¶Ç´Â ¼ö»êÈ­Ä®½·À¸·Î ó¸®ÇÑ 10 §¶/mlÀÇ LPS·Î ¼¼Æ÷¸¦ ´Ù¾çÇÑ ÀÚ±ØÇÏ¿© ´Ù¾çÇÑ ½Ã°£ÀÌ °æ°úÇÑ ´ÙÀ½ ¼¼Æ÷·ÎºÎÅÍ ºÐºñµÇ´Â MMP-1°ú TIMP-1ÀÇ RNA ¼öÁØÀ» real time-PCR ¹æ¹ýÀ¸·Î ÃøÁ¤ÇÏ¿´´Ù. ½ÇÇè°á°ú MMP-1ÀÇ mRNA¼öÁØÀº 48½Ã°£¿¡¼­ ÃÖ°í¿¡ ´ÞÇÏ¿´°í ±× ºÐºñÁ¤µµ´Â LPSÀÇ ³óµµ¿¡ ºñ·ÊÇÏ¿´´Ù. TIMP-1 mRNA´Â 1 §¶/mlÀÇ ¼¼±Õ¼º LPS Àڱؽà 24½Ã°£ ¹× 48½Ã°£¿¡¼­ ³ôÀº Áõ°¡¸¦ º¸¿´À¸³ª °í³óµµÀÎ 10 §¶/mlÀÇ LPS·Î ÀÚ±ØÇÑ °æ¿ì ¿ÀÈ÷·Á ±× ¹ßÇöÀÌ ¾ïÁ¦µÇ¾ú´Ù. ¶ÇÇÑ ¼ö»êÈ­Ä®½·À¸·Î Àüó¸®ÇÑ P. nigrescens LPS·Î ÀÚ±ØÇÑ MG 63 ¼¼Æ÷¿¡¼­´Â MMP-1°ú TIMP-1ÀÇ ºÐºñ°¡ ¾ïÁ¦µÇ¾ú´Ù. ÀÌ·¯ÇÑ °á°ú¸¦ ÅëÇØ º¼ ¶§ P. nigrescens LPS¿¡ ÀÇÇÑ MMP-1°ú TIMP-1ÀÇ ¹ßÇöÁ¶ÀýÀÌ Ä¡±Ù´Ü Áúȯ¿¡¼­ ¹ß»ýÇÏ´Â Ä¡Á¶°ñ Èí¼ö ±âÀüÁß Çϳª·Î »ç·áµÈ´Ù. »Ó¸¸ ¾Æ´Ï¶ó P. nigrescens¿¡ ÀÇÇØ ºÐºñµÇ´Â ±âÁú±Ý¼Ó´Ü¹éÈ¿¼Ò¸¦ ¸Å°³·Î ÇÏ´Â ¿°Áõ¹ÝÀÀ °¨¼Ò¿¡ ¼ö»êÈ­Ä®½·ÀÌ È¿°úÀûÀ¸·Î ÀÛ¿ëÇϴ°ÍÀ¸·Î È®ÀεǾî Ä¡±Ù´Ü Áúȯ¿¡ °ü¿©ÇÏ´Â ¼¼±Õ¼º LPS¸¦ Á¦°ÅÇϱâ À§ÇØ ÀÓ»óÀûÀ¸·Î »ç¿ëµÇ´Â ±Ù°Å°¡ µÉ ¼ö ÀÖ´Ù.

The purpose of this study is to monitor the secretion of matrix metalloproteinase-1 (MMP-1) and tissue inhibitor of metalloproteinase-1 (TIMP-1) produced by human osteosarcoma cell line (MG63) stimulated with Prevotella nigrescens lipopolysaccharides (LPS). and to compare the level of secretion before and after the treatment of calcium hydroxide on P. nigrescens LPS. LPS was extracted and purified from anaerobically cultured P. nigrescens. MG63 cells were stimulated by the LPS (0. 1. 10 §¶/ml) or LPS(10 §¶/ml) pretreated with 12.5 mg/ml of Ca(OH)©ü for 3 days. Total RNA was isolated from the cell. and real-time quantitative polymerase chain reaction (PCR) was performed for quantification of MMP-1 and TIMP-1. The results were as follows. 1. MMP-1 mRNA expression at 48 hr was highly increased by stimulation with P. nigrescens LPS. The increase was dose-dependent. 2. When stimulated with 1 §¶/ml of LPS. TIMP-1 mRNA expression was highly increased at 24 hr and 48 hr. However. TIMP-1 expression was suppressed at higher concentration (10 §¶/ml). 3. When P. nigrescens LPS was pretreated with Ca(OH)©ü. MMP-1 and TIMP-1 gene expression was downregulated. The results of this study suggest that transcriptional regulation of MMP-1 and TIMP-1 by P. nigrescens LPS could be one of the important mechanisms in bone resorption of periapical inflammation. The result of calcium hydroxide on MMP-1 and TIMP-1 gene expression suppression shows that calcium hydroxide detoxified bacterial LPS and thus should be used the medication of choice for intracanal dressings in root canal infected with black-pigmented bacteria.

Å°¿öµå

MMP-1;TIMP-1;P. nigrescens;LPS;Ca(OH)©ü;MG63

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