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PC-12 ¼¼Æ÷¿¡¼­ Cisplatin¿¡ ÀÇÇÑ ApoptosisÀÇ ±âÀü Underlying Mechanism of Cisplatin-induced Apoptosis in PC-12 cells

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Abstract

¼­ ·Ð
CsiplatinÀº Á¤¼Ò¾Ï, ³­¼Ò¾Ï, ½ÅÀå¾Ï µî °¢Á¾ ¾ÏÀ» Ä¡·áÇϱâ À§ÇØ ±¤¹üÀ§ÇÏ°Ô ¾²ÀÌ°í ÀÖ´Â
Ç×¾ÏÄ¡·áÁ¦ÀÌ´Ù. ±×·¯³ª ½ÅÀå, ½Å°æ µî¿¡¼­ ¿©·¯ °¡Áö ºÎÀÛ¿ëÀ» ¾ß±âÇϱ⠶§¹®¿¡ ±× »ç¿ëÀÌ
Á¦Çѵǰí ÀÖ´Ù. CisplatinÀÇ ÁÖ¿ä ºÎÀÛ¿ë Áß Çϳª´Â ¸»ÃʽŰ濰Àε¥ ƯÈ÷ °¨°¢½Å°æ°ú ÀÚÀ²½Å
°æ µîÀÇ ¸»ÃʽŰ濰ÀÌ ¹®Á¦°¡ µÇ°í ÀÖ´Ù. ÀÌ ºÎÀÛ¿ë¿¡ ´ëÇÏ¿© ¸¹Àº ¿¬±¸°¡ ÀÖ¾úÀ¸³ª ¾ÆÁ÷µµ
±× Á¤È®ÇÑ ±âÀüÀº ¹àÇôÁ® ÀÖÁö ¾Ê´Ù. ±×·±µ¥ cisplatin¿¡ ÀÇÇÑ ¸»ÃʽŰ濰ÀÌ cisplatin ÀÇÇÑ
¸»ÃʽŰæÀÇ apoptosis¿¡ ÀÇÇÑ °ÍÀÏ ¼öµµ ÀÖ´Ù´Â º¸°í°¡ ÀÖÀ¸¸ç ÀÌ´Â cisplatin¿¡ ÀÇÇÑ Ç×¾ÏÈ¿
°ú°¡ ¿©·¯ °¡Áö ¾Ï¼¼Æ÷¿¡¼­ÀÇ apoptosis¸¦ ÅëÇØ ÀϾ´Â °Í¿¡ ±Ù°Å¸¦ µÎ°íÀÖ´Ù.
Apoptosis´Â ¹ß»ý°úÁ¤»ó ºÒÇÊ¿äÇÑ ¼¼Æ÷³ª, ³ëÈ­µÈ ¼¼Æ÷, °¢Á¾ »óÇظ¦ ¹ÞÀº ¼¼Æ÷¸¦ Á¦°ÅÇÏ
±â À§ÇØ À¯ÀüÀûÀ¸·Î °áÁ¤µÇ¾îÁö´Â ¼¼Æ÷ÀÚ»ì ÇÁ·Î±×·¥ÀÇ È°¼ºÈ­¿¡ ÀÇÇؼ­ ÀϾ´Â ¼¼Æ÷»ç¸ê
ÀÇ ÇÑ ÇüÅ·Î, apoptosis´Â Á¤»óÀûÀΠžÆÀÇ ¹ß´Þ°ú ³ëÈ­, ±×¸®°í ¸é¿ª±â´É°ú Á¶Ç÷°èÀÇ À¯Áö
¿¡ Áß¿äÇÑ ¿ªÇÒÀ» ÇÑ´Ù. ±×·¯³ª apoptosisÀÇ ºñÁ¤»óÀûÀÎ Á¶ÀýÀº ¾ÏÀÇ Ãʱ⠹߻ý°ú È­Çпä¹ý
¿¡ ÀúÇ×¼ºÀ» Áö´Ï´Â Á¾¾ç¼¼Æ÷ÀÇ Çü¼ºÀÚ°¡ ¸é¿ªÁúȯ, ÈÄõ¼º ¸é¿ª°áÇÌÁõ, ±×¸®°í ½Å°æÀÇ ÅðÈ­
µî¿¡ °ü¿©ÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁö°í ÀÖ´Ù. ÀÌ·¯ÇÑ apoptosis´Â ¼¼Æ÷ÀÇ Ãà¼Ò, ¼¼Æ÷¸·ÀÇ ¼öÆ÷Çü¼º,
Å©·Î¸¶Æ¾ÀÇ ¼öÃà, ÇÙÀÇ ºÐÇØ, apoptotic bodyÀÇ Çü¼ºÀ» Ư¡À¸·Î ÇÑ´Ù.
ApoptosisÀÇ °úÁ¤Àº Å©°Ô ¼¼°¡Áö °úÁ¤ Áï ½ÅÈ£Àü´Þ´Ü°è(Signalization phase), Á¶Àý ¹× ½Ç
Çà´Ü°è(Control & execution phase), ±¸Á¶Àû º¯È­´Ü°è(Structural alteration Phase)·Î ±¸ºÐµÈ
´Ù. Á¶Àý ¹× ½ÇÇà´Ü°è¿Í ±¸Á¶Àû º¯È­´Ü°è´Â °ÅÀÇ ´ëºÎºÐÀÇ apoptosis °úÁ¤¿¡¼­ À¯»çÇÑ °úÁ¤
À» °ÅÄ¡Áö¸¸ ½ÅÈ£Àü´Þ´Ü°è´Â apoptosis¸¦ ¾ß±âÇÏ´Â ÀÚ±ØÀÇ Á¾·ù¿¡ µû¶ó ´Ù¸£´Ù ApoplosisÀÇ
½ÅÈ£Àü´Þü°è Áß °¡Àå ´ëÇ¥ÀûÀÎ °æ·Î´Â stress-activated protein kinase(SAPK)ÀÇ È°¼ºÈ­ÀÌ
´Ù. Á¶Àý ¹× ½ÇÇà´Ü°è´Â protease·Î ¿ªÇÒÀ» ÇÏ´Â ¿©·¯ °¡Áö caspaseµéÀÌ È°¼ºÈ­µÇ´Â ´Ü°èÀÎ
µ¥ ±× È°¼ºÈ­´Â Bcl-2 family¿¡ ÀÇÇÏ¿© Á¶ÀýµÈ´Ù. Bcl-2 family´Â apoptosis¸¦ Á¶ÀýÇÏ´Â Áß
¿äÇÑ ´Ü¹éÁú±ºÀε¥ ÀÌ Áß¿¡´Â apoptosis¸¦ ÃËÁøÇÏ´Â °Íµé(Bax, Bak. Bal-XS,,
Bad, Bid, Bik, Hrk)µµ ÀÖ°í ¹Ý¸é¿¡ apoptosis¸¦ ¾ïÁ¦ÇÏ´Â °Íµé(Bcl-2,
Bcl-X1, Bcl-w, Bfl-1, Brag-1, MGl-1, Al)µµ ÀÖ´Ù.
º» ¿¬±¸¿¡¼­´Â ½Å°æ¼¼Æ÷ÀÇ ´ëÇ¥ÀûÀÎ ¸ðµ¨ÀÎ rat pocochromocytoma ¼¼Æ÷(PC-12 ¼¼Æ÷)¸¦
»ç¿ëÇÏ¿© CisplatinÀÌ ½Å°æ¼¼Æ÷¿¡¼­ apoptosis¸¦ ¾ß±âÇÏ´ÂÁö È®ÀÎÇÏ°í, ±×¸®°í ±× ºÐÀÚ»ý¹°ÇÐ
Àû ±âÀüÀ» ¹àÈ÷°íÀÚ ÇÏ¿´´Ù.
#ÃÊ·Ï#
Cisplatin is a widely used antitumor drug of which the dose-limiting toxicity is
predominantly large-fiber neuro-pathy. Cisplatin-induced neurotoxicity includes sensory
and autonomic neurotoxicity of which the mechanism has not been clarified. To
determine whether cisplatin on the rat pheochromocytoma cells(PC-12cells).
Apoptosis of PC-12 cells was induced dose-and time-dependently by the treatment of
cisplatin. Cisplatin-induced apoptosis of PC-12 cells was identified by DNA
fragmentation. During cisplatin-induced apoptosis of PC-12 cells stress-activated protien
kinase(SAPK) activity was increased and mitogen-activated protein kinase(MAPK)
activity was decreased. The expression of Bcl-2 was decreased by the treatment of
cisplatin without effect on the expression of other Bcl-2 related proteins.
It is speculated that cisplatin may induce apoptosis in PC-12 cells by regulation on
Bcl-2 related proteins and this regulation might be associated with activation of SAPK
and inhibition MAPK.

Å°¿öµå

Cisplatin; Apoptosis; PC-12 cells.;

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