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Genistein°ú Calphostin C¸¦ ÀÌ¿ëÇÑ T98G ¼¼Æ÷¿Í Hs 683 ¼¼Æ÷¿¡¼­ÀÇ PLCÈ°¼º°ú ¼¼Æ÷Áõ½ÄÀÇ °ü°è¿¡ ´ëÇÑ ¿¬±¸ Differential Effect of Genistein and Calphostin C on Phospholipase C Activation and Cell Proliferation in T98G Human Glioblastoma and Hs 683 Human Glioma Cells

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ÃÖâ¸í/Chang Myong Choi ±èÀ±/±èº¸¿¬/¾çÁöÈ£/ÀÌÀÏ¿ì/Á¤Ã¶±¸/°­Áرâ/Youn Kim/Bo Yeon Kim/Ji Ho Yang/Il Woo Lee/Chul Ku Jung/Joon Ki Kang

Abstract

¸ñÀû : ±³¸ð¼¼Æ÷Á¾ÀÇ Ä¡·á¸¦ À§ÇÑ ¸¹Àº ±âÃʽÇÇèÀÌ ÁøÇàµÇ°í ÀÖ´Ù. ±× Áß¿¡¼­ ¿©·¯ °¡Áö
Tumor receptor¿Í °ü·ÃµÈ ¼¼Æ÷³»ÀÇ ½ÅÈ£Àü´Þ °ü·ÃÈ¿¼Ò¿¡ ´ëÇÑ ¿¬±¸°¡ °ü½ÉÀÇ ´ë»óÀÌ µÇ°í
ÀÖ´Ù. º» ½ÇÇè¿¡¼­´Â ±³¸ð¼¼Æ÷Á¾¿¡ À־ÀÇ Áö±Ý±îÁö ¸¹ÀÌ ¿¬±¸µÈ PKCÀÇ È°¼ºµµ ¿Ü¿¡
PLC¿Í PLDÀÇ Á¶Àý±âÀÛÀ» ºÐ¼®ÇÏ°íÀÚ ÇÑ´Ù. PLC, PLD¿Í PKCÀÇ È°¼ºÈ­³ª ¾ïÁ¦°æ·Î¸¦ ¿¬
±¸ÇÔÀ¸·Î½á ¼¼Æ÷½ÅÈ£Àü´Þ±âÀÛÀ» Á»´õ ÀÌÇØÇϱâ À§ÇÑ ±âÃʽÇÇèÀ» Á¦°øÇÏ¿© ¾Ï Ä¡·á¿¡ ±â¿©
ÇÏ°íÀÚ ÇÑ´Ù.
´ë»ó ¹× ¹æ¹ý : cell lineÀ¸·Î´Â 3°³ÀÇ glioblastoma cell lineÀÎ T98G,4-172, U-373 MG cell
°ú glioma cellÀÎ Hs 683 cell ±×¸®°í Á¤»ó ´ëÁ¶±ºÀ¸·Î fibroblastÀÎ NIH 373 cellÀ» »ç¿ëÇÏ
¿´°í °¢ cellµé¿¡ broad spectrum PTK inhibitorÀÎ genistein°ú PKC inhibitorÀÎ calphotinc
C¸¦ ó¸®ÇÏ°í ¿©±â¿¡ agonistÀÎ PDGF¿Í ¥á-thrombinÀ» °¢°¢ ÷°¡ÇÑ ÈÄ ³ªÅ¸³ª´Â PLC,
PLD¿Í PKCÀÇ È°¼ºµµ¸¦ ÃøÁ¤ÇÏ¿© ºñ±³ºÐ¼® ÇÏ¿´´Ù.
°á°ú : °¢ ¼¼Æ÷µéÀÇ ¹ÝÀÀÀº °¢°¢ÀÇ independent experiments¸¦ ÅëÇÏ¿© ½ÇÇè°á°ú¸¦ ºÐ¼®ÇÏ¿´
´Âµ¥ ´ÙÀ½°ú °°¾Ò´Ù.
1) T98G Glioblastoma cell¿¡¼­ genistein¿¡ ÀÇÇØ ¼±ÅÃÀûÀ¸·Î PDGF-induced PLC, PLD
activationÀ» ¾ïÁ¦ÇÏ¿´°í Hs 683 glioma cell¿¡¼­´Â ¾ïÁ¦ÇÏÁö ¸øÇÏ¿´´Ù.
2) calphostin C´Â µÎ ¼¼Æ÷ ¸ðµÎ¿¡¼­ PKC-independent pathway·Î PLC¿Í PLD¸¦ È°¼ºÈ­
ÇÏ¿´´Ù.
3) genistein°ú calphostin C´Â ¸ðµÎ ±³¸ð¼¼Æ÷Á¾ ¼¼Æ÷ÀÇ Áõ½ÄÀ» ¾ïÁ¦Çϸç PLC, PLDÀÇ È°¼º
È­´Â ±³¸ð¼¼Æ÷Á¾ Áõ½Ä°ú ¹«°üÇÏ¿´´Ù.
°á·Ð : º» ½ÇÇè¿¡¼­ genistein°ú calphostin-C´Â ¸ðµÎ T98G glioblastoma¼¼Æ÷¿Í Hs 683
glioma¼¼Æ÷ÀÇ Áõ½ÄÀ» ¾ïÁ¦ÇÏ¿´´Âµ¥ ÀÌ´Â ¼¼Æ÷Áõ½Ä°ú PLC, PLD¿Í´Â ¹«°üÇÔÀ» ¸»ÇØÁØ´Ù. °á
·ÐÀûÀ¸·Î genisteinÀº Hs 683 glioma ¼¼Æ÷¿¡´Â ¿µÇâÀÌ ¾øÀ¸³ª T98G glioblastoma¼¼Æ÷ÀÇ
PDGF¿¡ ÀÇÇÑ PLC, PLDÈ°¼ºÀ» ƯÀÌÀûÀ¸·Î ¾ïÁ¦ÇÔÀ» ¾Ë ¼ö ÀÖ°í À̵é PLC³ª PLD´Â PKC
ºñÀÇÁ¸Àû Çö»óÀ¸·Î È°¼ºÈ­°¡ µÇ´Â °ÍÀ» ÃßÃø ÇÒ ¼ö ÀÖ´Ù. calphostin-C¿¡ ÀÇÇÑ PLC¿Í PLD
ÀÇ È°¼ºÈ­ ±âÀÛÀÌ °ü½ÉÀÇ ´ë»óÀÌ µÇ´Âµ¥ ÀÌ ½ÇÇè¿¡¼­´Â ¹àÇôÁöÁö ¾Ê¾ÒÁö¸¸ PLC¿Í PLDÀÇ
È°¼ºÈ­´Â ¼¼Æ÷ÀÇ °íÀ¯ ¿îµ¿¼º Áõ°¡¿Í °ü·ÃÀÌ ÀÖÀ» ¼öµµ ÀÖ´Ù. ¼¼Æ÷ÀÇ ½ÅÈ£Àü´Þ °úÁ¤ÀÌ ¼¼Æ÷
ÀÇ ¿îµ¿¼º, ħ½À¼º, ÇüÅ º¯È­ µî°ú °ü·ÃÀÌ ÀÖ´Â Áö ¹àÈ÷±â À§ÇÏ¿© Á»´õ ¿¬±¸°¡ ÇÊ¿äÇÑ °ÍÀ¸
·Î »ç·áµÈ´Ù.
#ÃÊ·Ï#
A major role in sustaining tumors like glioma has been attributed to growth factors.
Many questions remain unanswered about how such external signals are transduced into
a transfored phenotype. Growth factors such as PDGE and epidermal growth
factor(EGF) activate PLC. and this activation requires the intrinsic tyrosine kinase
activity of the growth factor receptor. There are only a few reports on PKC activity in
astrocytoma cells. especially in human glioma cells. We focused on signal transduction
of phspholipase C(PLC) and phospholipase D (PLD) in human glioma cells. In this study,
using genistein C, the regulation of PLC. PLD. and PKC was investigated. The results
are as follows ;
1) Genistein is a selective inhibitor of PDGF-induced PLC-and PLD activation in T98G
glioblastoma cells but not in Hs 683 glioma cells.
2) Calphostin-C stimulates PLC and PLD. possibly through a PKC-independent pathway
in both T98G and Hs 683 cells.
3) Both genistein and calphostin-C inhibit glioma cell proliferation, indication that the
pathway for activation of PLC and PLD is not relevant to the pathway of cell
proliferation in glioma cells.

Å°¿öµå

Glioblatma; Signal transduction; Growth factor; PKC; PLC; PLD.;

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