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ÀÎü ¾Ï¼¼Æ÷ÁÖ¿¡¼­ Genistein¿¡ ÀÇÇÑ ¼¼Æ÷ºÐ¿­ ¾ïÁ¦ ¹× Apoptosis À¯¹ß Genistein Induces Inhibition of Cell Proliferation and Programmed Cell Death in the Human Cancer Cell Lines

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Abstract

¼­·Ð
Flavonoids´Â °úÀÏ°ú ¾ß並 Æ÷ÇÔÇÑ ¸¹Àº ½Ä¹°¿¡ ÇÔÀ¯µÇ¾î ÀÖÀ¸¸ç, genisteinÀº flavonoid
ÀÇ ÇÑ groupÀÎ isoflavones¿¡ ¼ÓÇÏ´Â »ö¼ÒÀÇ ÀÏÁ¾À¸·Î C6-C3-C6¸¦ ±âº» ±¸Á¶·Î ÇÏ´Â
phenol°è È­ÇÕ¹°ÀÌ´Ù. GenisteinÀº Akiyamaµî¿¡ ÀÇÇÏ¿© Protein tyrosine kinase(PTK)ÀÇ ÀÛ
¿ëÀ» ƯÀÌÀûÀ¸·Î ¾ïÁ¦ÇÑ´Ù°í ¾Ë·ÁÁ³´Âµ¥, PTK´Â tumorigenesis °úÁ¤¿¡ Áß¿äÇÑ ¿ªÇÒÀ» Çϸç,
¼ºÀå Á¶Àý ¼ö¿ëüµé°úµµ ¹ÐÁ¢ÇÏ°Ô ¿¬°üµÇ¾î ÀÖ´Â °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù. ÀÌ´Â ¶ÇÇÑ DNA¿Í
topoisomerase II »çÀÌÀÇ °øÀ¯ °áÇÕÀ» ÃËÁøÇÔÀ¸·Î½á topoisomerase IIÀÇ ÀÛ¿ëÀ» ¾ïÁ¦ÇÏ°í ¼¼
Æ÷ºÐÈ­¸¦ À¯µµÇϰųª DNA ³ª¼±ÀÇ Àý´Ü È¿°ú µîµµ ÀÖÀ½ÀÌ º¸°íµÈ ¹Ù ÀÖ´Ù.
ƯÈ÷ genisteinÀº Èä¼±¼¼Æ÷³ª ¿©·¯ Á¾·ùÀÇ ¾Ï¼¼Æ÷µé¿¡¼­ apoptosis¸¦ À¯¹ßÇϸç, Ç÷°üÇü¼º
À» ¾ïÁ¦ÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù. ±×¸®°í »ýÁã ¹è ¹ß»ý´Ü°èÀÇ ¼ºÀå ¹× ¼¼Æ÷Áõ½ÄÀ» ¾ï
Á¦Çϰųª, ¼¼Æ÷ºÐÈ­¸¦ À¯µµÇϸç, °¢Á¾ÀÎü ¾Ï¼¼Æ÷ÀÇ ¼¼Æ÷ºÐ¿­À» ¾ïÁ¦½ÃÅ°´Â µîÀÇ È¿°ú°¡ ÀÖ
´Â °ÍÀ¸·Î º¸°íµÇ¾îÁ® ¿À°í ÀÖ´Ù. ÀÌ·¯ÇÑ genistein ¹× ±×¿Í À¯»çÇÑ flavonoid°è È­ÇÕ¹°¿¡ ÃÖ
±Ù ¸¹Àº °ü½ÉÀ» °¡Áö´Â ÀÌÀ¯´Â ´ëµÎ¿Í °°Àº Äá·ù¸¦ ¸¹ÀÌ ¼·ÃëÇÏ´Â Çѱ¹À» Æ÷ÇÔÇÑ Áß±¹, ÀÏ
º» µî ƯÈ÷ ¾Æ½Ã¾Æ°è ¿©¼ºµé¿¡¼­ÀÇ À¯¹æ¾Ï »Ó¸¸ ¾Æ´Ï¶ó ³²¼ºµé¿¡¼­ÀÇ Àü¸³¼± ¹× ÃéÀå¾ÏÀÇ
ºóµµ°¡ ¼­¾çÀε鿡 ºñÇÏ¿© »ó´ëÀûÀ¸·Î ¸Å¿ì ³·´Ù´Â Åë°èÀÚ·á¿¡ ±âÃʸ¦ µÎ°í ÀÖ´Ù.
ÇÑÆí ÁøÇÙ¼¼Æ÷ ºÐ¿­¿¡ ¾ç¼º Á¶ÀýÀÎÀÚ·Î ÀÛ¿ëÇÏ´Â ¿©·¯ Á¾·ùÀÇ cyclinµé°ú ¿¬°üµÈ cdkµé
(cyclin-dependent kinases)¿¡ ÀÇÇØ ¸ÕÀú Á¶Àý ¹Þ´Â´Ù°í ÇÒ ¼ö Àִµ¥, ÇöÀç±îÁö ¾à 10°¡Áö
ÀÌ»óÀÇ cyclinµé°ú 8°¡Áö ÀÌ»óÀÇ cdkµéÀÌ ÀÛ¿ëÇÏ¿© ÃÖ¼ÒÇÑ 15°¡Áö ÀÌ»óÀÇ ¼­·Î ´Ù¸¥
cyclic-cdk complex¸¦ Çü¼ºÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù. ¾Æ¿ï·¯ À̵é complex¿¡ À½¼º Á¶
ÀýÀÎÀÚ·Î ÀÛ¿ëÇÏ´Â ¿©·¯ Á¾·ùÀÇ CKIµé(cyclin-dependent kinase inhibitors)°ú ¸¹Àº Àü»çÀÎ
ÀÚ µîÀÌ ¼¼Æ÷ºÐ¿­ ÁÖ±âÀÇ Á¶Àý¿¡ °ü¿©ÇÏ°í ÀÖ´Ù.
º» ¿¬±¸¿¡¼­´Â genisteinÀÇ ¿µÇâ¿¡ ´ëÇÑ ±âº»ÀûÀÎ Á¶»ç°¡ °ÅÀÇ ÀÌ·ç¾îÁöÁö ¾Ê°í ÀÖ´Â ÀÎ
ü Àü¸³¼± ¹× Ewing À°Á¾¾Ï¼¼Æ÷¸¦ ´ë»óÀ¸·Î, À̵éÀÇ ¼ºÀå¿¡ ¹ÌÄ¡´Â genisteinÀÇ ¿µÇâÀ» Á¶
»çÇÏ¿´´Ù. À̸¦ À§ÇÏ¿© À̵éÀÇ ¾Ï¼¼Æ÷ÀÇ ¼¼Æ÷ºÐ¿­¿¡ Á÷Á¢ÀûÀ¸·Î ¿¬°üµÈ ¿©·¯ Á¶Àý ÀÎÀڵ鿡
¹ÌÄ¡´Â genisteinÀÇ ¿µÇâÀ» ºÐ¼®ÇÏ¿´´Ù.

Purpose: Genistein, a natural isoflavonoid phyto-oestrogen present in plant foods
including citrus fruits and soybean, is a specific inhibitor of tyrosine kinase and
topoisomerase II. In this paper we examined the effect of genistein on cell cycle
progression and programmed cell death in the human prostate carcinoma PC-3 and
Ewing's sarcoma CHP-100 cells.
Material and Methods: Effect of genistein on cell cycle was measured by DNA flow
cytometric analysis. In order to understand anticancer effect of genistein on cell cycle,
Western blot analysis, immune complex kinase assay, DAPI staining and DNA
fragmentation analysis were conducted.
Results: DNA flow cytometric analysis indicated that genistein induced cell cycle
arrest at the G2/M transition phase. Western blot analyses showed that genistein
selectively reduced expression of cyclic B1 and cdk2-dependent kinase activity in both
cell lines. Genistein also induced apoptosis that was demonstrated by direct visualization
of morphological nuclear changes and confirmed by the production of characteristic
ladder patterns of genomic DNA fragmentation.
Conclusion: The chemopreventive activity of genistein is proven to be related with the
induction of cell cycle arrest at the G2/M transition phase by reducing the expression of
cyclic B1 and cdk2-dependent kinase activity, and also with the induction of apoptosis in
the tested cancer cells.

Å°¿öµå

Genistein; Cancer cells; Cell cycle arrest; Apoptosis;

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