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dz¼±µµÀÚ¿¡ ÀÇÇÑ ÈòÁãÀÇ °æµ¿¸Æ ¼Õ»ó ÈÄ phospholipase C-¥ã1 ¹ßÇöÀÇ º¯È­ The change in phospholipase C-¥ã1 expression following balloon injury to the rat carotid artery

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ÀÓ¼ºÈÆ/Seong Hoon Lim Ç㿵¼±/±èÇÐÁø/ÀÌ¿Õ¼ö/¾ÈÁöÇö/¼Û¿µºó/±è»ó¿í/±èÅÂÈ£/±èÄ¡Á¤/·ù¿Õ¼º/À¯¾ðÈ£/Young Sun Heo/Hak Jin Kim/Wang Soo Lee/Ji Hyun Ahn/Young Bien Song/Sang Wook Kim/Tae Ho Kim/Chee Jeong Kim/Wang Seong Ryu/Un Ho Ryoo

Abstract

¸ñÀû : ÀÓ»óÀûÀ¸·Î °æÇÇÀû °üµ¿¸ÆÈ®Àå¼úÀÌ ¸¹ÀÌ ½ÃÇàµÇ°í ÀÖÁö¸¸ ¾ÆÁ÷ ÀçÇùÂøÀÌ ¹®Á¦Á¡À¸·Î ³²¾ÆÀÖ´Ù. Phospholipase C-¥ã1Àº ¼¼Æ÷¸·À» ÅëÇÑ ½ÅÈ£Àü´Þ °úÁ¤¿¡¼­ °¡Àå ÇÙ½ÉÀûÀÎ È¿¼Ò Áß Çϳª·Î¼­ PDGF¿Í FGF ¼ö¿ëüÀÇ tyrosine kinase activity ¿¡ ÀÇÇؼ­ È°¼ºÈ­µÇ°í
¾ÈÁö¿ÀÅٽŠII¿Íµµ ¿¬°èµÇ¾î ÀÖ´Ù. º» ¿¬±¸´Â PLC-¥ã1ÀÌ µ¿¸Æ¼Õ»ó ÈÄÀÇ ¼¼Æ÷¼ºÀå°ú ºÐÈ­¿¡ Áß¿äÇÏ´Ù°í »ý°¢ÇÏ°í, ½Å»ý³»¸·ÀÌ Çü¼ºµÇ´Â °úÁ¤¿¡¼­ PLC-¥ã1ÀÇ ¹ßÇö¼öÁØÀÌ ¾î¶»°Ô º¯ÇÏ´ÂÁö ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.
¹æ¹ý : »ýÈÄ 6°³¿ù µÈ ¼öÄÆ Wistar ÈòÁ㸦 ½ÇÇè ´ë»óÀ¸·Î ÇÏ¿© ÁÂÃø °æµ¿¸ÆÀ» ¼ö¼ú ¹Ú¸® ÇÑ ÈÄ 2FÀÇ Fogarty dz¼±µµÀÚ·Î °æµ¿¸Æ¿¡ ¼Õ»óÀ» ÁÖ¾ú´Ù. ¼Õ»ó ÈÄ 1ÀϺÎÅÍ 4ÁÖÀϱîÁöÀÇ °æµ¿¸Æ Á¶Á÷À» ¾ò¾î monoclonal anti-PLC-¥ã1 Ç×ü·Î ¸é¿ªÁ¶Á÷È­ÇÐ °Ë»ç¿Í
¿þ½ºÅϺí·ÎÆÃÀ»
½ÃÇàÇÏ¿´´Ù.
°á°ú : °æµ¿¸Æ ¼Õ»ó ÈÄ 7ÀÏ° ¼¼Æ÷ÀÇ Áõ½Ä°ú ÇÔ²² Ç÷°üÀÇ ³»°­ ÂÊÀ¸·Î ½Å»ý³»¸·ÀÌ ¶Ñ·ÇÇÏ°Ô °üÂûµÇ¾úÀ¸¸ç, ¼Õ»ó ÈÄ 2ÁÖÀÏ¿¡´Â ½Å»ý³»¸·ÀÇ µÎ²²°¡ Á߸· ¸¸Å­ µÎÅÍ¿öÁ³À¸¸ç, 3ÁÖ ÈÄ¿¡´Â ¼¼Æ÷¿Ü ±âÁúÀÇ ÇöÀúÇÑ Áõ°¡°¡ °üÂûµÇ¾ú´Ù. ¸é¿ªÁ¶Á÷È­ÇÐ °Ë»ç¿¡¼­ °æµ¿¸Æ ¼Õ»ó
1ÁÖÀÏ ÈÄ
PLC-¥ã1ÀÇ ¹ßÇöÀº °­ÇÏ°Ô Áõ°¡ÇÏ¿´À¸¸ç ƯÈ÷ »õ·ÎÀÌ Çü¼ºµÈ ½Å»ý³»¸·¿¡ ¸¹ÀÌ ºÐÆ÷ÇÏ¿´´Ù. PLC-¥ã1 ¹ßÇöÀÇ Áõ°¡´Â ¼Õ»ó 2-3ÁÖ¿¡µµ Áö¼ÓÇÏ¿´À¸¸ç 4ÁÖ ÈÄ¿¡´Â ´Ù¼Ò °¨¼ÒÇÏ¿´´Ù. ÁÖ»ç¹Ðµµ°è·Î ºñ±³ÇÑ °á°ú ¼Õ»ó 3ÁÖÀÏ ÈÄ °æµ¿¸Æ¿¡¼­ 3¹è ÀÌ»óÀÇ PLC-¥ã1ÀÌ ¹ßÇöµÇ¾ú´Ù
°á·Ð : ÈòÁ㠰浿¸Æ¿¡¼­ dz¼±µµÀÚ ¼Õ»ó ÈÄ ÀϾ´Â ½Å»ý³»¸·ÀÇ Çü¼º¿¡´Â PLC-¥ã1À» ÅëÇÑ ½ÅÈ£Àü´Þ ü°èÀÇ ÁõÆø°úÁ¤ÀÌ Á¸ÀçÇÔÀ» ½Ã»çÇÏ¿´À¸¸ç, ÀÌ °á°ú´Â ÇâÈÄ PLC-¥ã1 ´Ü¹éÁú ¹ßÇöÀÇ Á¶ÀýÀ» ÅëÇØ ½Å»ý³»¸·ÀÇ Çü¼ºÀ» ¾ïÁ¦ÇÏ´Â »õ·Î¿î Ä¡·á¹ýÀ» ½ÃµµÇÒ ¼ö ÀÖ´Â
±Ù°Å°¡
µÉ ¼ö
ÀÖÀ» °ÍÀ¸·Î »ç·áµÈ´Ù.

Background : While inositol phospholipid-specific phospholipase C (PLC) plays a central role in signal transduction pathways, little is known about its role in the vascular response to injury. Recent studies have shown that phospholipase C-¥ã1
(PLC-¥ã1)
is required for PDGF-induced DNA synthesis and angiotensin II signaling. This study was undertaken to determine the potential involvement of PLC-¥ã1 in the in vivo response to vascular injury.
Methods : Vascular injury was achieved in the left common carotid artery of six-month-old male Wistar rats. The expression of PLC-¥ã1 was evaluated at serial time points by immunohistochemistry and Western blot analysis following balloon
de-endothelialization of the rat carotid artery.
Results : In the denuded carotid artery at 1 week, the neointima became thicker in a symmetrical manner with respect to the long axis. A strong expression of PLC-¥ã1 at one week after injury was seen primarily in the thin layers of neointima.
This
increased immunoreactivity of PLC-¥ã1 persisted at 2-3 weeks after injury, coinciding with the time when neointima gains of its mass. At 4 weeks after injury, staining intensity slightly declined but levels remained elevated. As determined by
Western
blot analysis, the amount of PLC-¥ã1 was about 3-fold higher at 3 weeks after injury compared to uninjured vessels (p<0.01).
Conclusion : These results suggest that the amplification of traffic within signal transduction pathways involving PLC-¥ã1 occurs and may play a significant role in neointima formation following arterial injury.

Å°¿öµå

Phospholipase C; Signal Transduction; Carotid Arteries;

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