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ÀÎü Àü¸³¼±°ú ¼ö¼úÀû °Å¼¼ ÀüÈÄ ¹× 5¥á-reductase ¾ïÁ¦Á¦ Åõ¿© ÈÄ ¹é¼­¿¡¼­ÀÇ p57 ¹× bcl-2 mRNA¹ßÇöÀÇ º¯È­ Change of the 57 and bcl-2 mRNA Expression in Human and Rat Prostates Castration or 5¥á- reductase Inhibitor Administration

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Abstract

¼­·Ð
ÇöÀç Àü¸³¼±¾Ï Ä¡·á¿Í °ü·ÃµÈ ¿©·¯ »ýÈ­ÇÐÀû ±âÀü¿¡ ´ëÇÑ ¿¬±¸ Áß °èȹµÈ ¼¼Æ÷»ç¸Á
(programmed cert death) ¶Ç´Â ¼¼Æ÷°í»ç(apoptosis)¶ó´Â ÁÖÁ¦ ¿Í °ü·ÃÇÏ¿© ¸¹Àº À¯ÀüÀÚµéÀÌ
¿¬±¸µÇ°í ÀÖ°í, ±×µé°ú Àü¸³¼±¾Ï°úÀÇ »óÈ£°ü°è°¡ º¸°íµÇ°í ÀÖ´Ù. ±×·¯³ª, Àü¸³¼±ºñ´ëÁõ°ú °ü
·ÃµÈ ¼¼Æ÷°í»ç¿¡ ´ëÇÑ ¿¬±¸´Â ¸¹Áö ¾Ê´Ù. Áï Àü¸³¼±ºñ´ëÁõÀÇ ³»°úÀû Ä¡·á½Ã ÃÊ·¡µÇ´Â Àü¸³
¼± Å©±âÀÇ °¨¼Ò´Â Àü¸³¼±Á¶Á÷ÀÇ ´õ ÀÌ»óÀÇ Áõ½Ä¾øÀÌ ÀÌ¹Ì Á¸ÀçÇÏ´Â Àü¸³¼±Á¶Á÷ÀÇ °¨¼Ò¿¡ ÀÇ
ÇÑ °ÍÀ¸·Î »ý°¢ÇÑ´Ù. ÀÏÁ¤ÇÑ Á¶Á÷ ¶Ç´Â ¼¼Æ÷°¡ Áõ½ÄÇÑ´Ù ÇÔÀº ¼¼Æ÷ÁÖ±âÀÇ ¹Ýº¹À» ÅëÇؼ­ ¼¼
Æ÷ÀÇ ¼ýÀÚ°¡ Áõ°¡µÊÀ» ¸»ÇÑ´Ù. ¼¼Æ÷ÁÖ±â¿Í °ü·ÃµÈ ¿©·¯ °¡Áö ¹°Áú Áß p21°ú p27Àº ¸¹Àº Á¶
Àý°úÁ¤¿¡ Âü°¡Çϴµ¥, À̵éÀº cycline depenent kinase¾ïÁ¦Á¦(CDI)¿¡ ¼ÓÇÑ´Ù. in vivo¿¡¼­´Â
ÀÌ CDIµéÀÌ G1±âÀÇ cycline dependent kinase(CDK)¿¡¸¸ ÀÛ¿ëÇÑ´Ù°í ¾Ë·ÁÁö°í ÀÖ´Ù. ¹æ»ç¼±
Á¶»ç¿¡ ÀÇÇØ ÃÊ·¡µÈ DNA¼Õ»ó¿¡ µû¸¥ G1±â ¾ïÁ¦ÀÇ °æ¿ì¿¡ p53ÀÌ Áß°³ µÈ ¼¼ Æ÷°í»ç°¡ °ü
¿©Çϴµ¥, ¿©±â¿¡µµ p21°ú p27ÀÌ °ü¿©ÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁö°í ÀÖ´Ù. p57Àº 1977³â KitsakÀÌ
º¸°íÇÑ 57KDaÀÇ ´Ü¹éÀ¸·Î¼­ ÃÖ±Ù±îÁö ±× ¿ªÇÒ¿¡ ´ëÇØ Á¤È®È÷ ¾Ë·ÁÁöÁö ¾Ê°í ÀÖ´Â ¹°ÁúÀÌ
´Ù. ±×·¯³ª À̹°ÁúÀº p21/p27°è¿¡ ¼ÓÇÏ´Â °ÍÀ¸·Î À̵é°ú ¿°±â¼­¿­ÀÌ ¸Å¿ì À¯»çÇÑ °ÍÀ¸·Î ¾Ë
·ÁÁö°í ÀÖ´Ù. Lee µî¿¡ ÀÇÇϸé, ÀÌ À¯ÀüÀÚ´Â Ç×Áõ½ÄÈ¿°ú¸¦ ¼ÒÀ¯Çϸç, ÀÛ¿ëÀº ¼¼Æ÷Áֱ⿡¼­
G1±âÀÇ ¾ïÁ¦¸¦ ÀÏÀ¸Å°´Â °ÍÀ¸·Î ¾Ë·ÁÁö°í ÀÖ´Ù. ÇöÀç±îÁö, Á¤»ó Àü¸³¼± ¶Ç´Â ¾ç¼ºÀü¸³¼±ºñ
´ëÁõ ¹× Àü¸³¼±¾Ï¿¡¼­ p57¿¡ ´ëÇÑ ¿¬±¸º¸°í´Â ¾ø´Ù. bcl-2À¯ÀüÀÚ´Â »ç¶÷ÀÇ 18¹ø ¿°»öü¿¡
À§Ä¡ÇÏ´Â ¿øÁ¾¾ç À¯ÀüÀڷμ­ ¼¼Æ÷°í»ç °úÁ¤À» ¹æÇØÇÏ¿© ¼¼Æ÷ÀÇ »ýÁ¸À» ¿¬Àå½ÃÄÑ Á¶Á÷ÀÇ ¾Ç
¼ºº¯È­ ¹× ÁøÇà¿¡ Áß¿äÇÑ ¿ªÇÒÀ» ÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù. ÀÌ·¯ÇÑ °üÁ¡¿¡¼­, ³²¼ºÈ£·Î¸ó ¹Ú
Å»À» À¯µµÇÑ ÈÄ ÃÊ·¡µÇ´Â Àü¸³¼±ÀÇ ¼¼Æ÷°í»ç¿Í °ü·ÃÇÏ¿© P57À» ¿¬±¸ÇÏ´Â °ÍÀº Àǹ̰¡ ÀÖÀ¸
¸ç, µ¿½Ã¿¡ ¼¼Æ÷°í»ç¿¡ ´ëÇØ ¿¬±¸°á°ú°¡ ÃæºÐÈ÷ ÃàÀûµÈ bcl-2¿¡ ´ëÇÑ ºñ±³¿¬±¸´Â Àü¸³¼±ºñ
´ëÁõ¿¡¼­ÀÇ À̵é À¯ÀüÀÚÀÇ ¿ªÇÒÀ» ±Ô¸íÇϴµ¥ µµ¿òÀÌ µÇ¸®¶ó »ý°¢ÇÑ´Ù.
ÀÌ ¿¬±¸¿¡¼­´Â Á¤»ó Àü¸³¼±, ¾ç¼ºÀü¸³¼±ºñ´ëÁõ ¹× Àü¸³¼±¾Ï¿¡¼­ÀÇ p57°ú bcl-2ÀÇ ¹ßÇöÀ»
°üÂûÇÏ°í, ¹é¼­ÀÇ °íȯÀýÁ¦ ¹× 5¥á-reductase ¾ïÁ¦Á¦ÀÇ Åõ¿©¿¡ ÀÇÇÑ Àü¸³¼±¿¡¼­ÀÇ bcl-2ÀÇ
¹ßÇöÀÇ º¯È­¸¦ °üÂûÇÏ°íÀÚ ÇÏ¿´´Ù.

Purpose : The voiding difficulty in aged people is usually caused by prostate tumor
and these tumors are influenced by the androgen. The purpose of this research was to
study the prostatic genetic change caused by changes of hormonal milers and evaluate
the pattern of the changes of p57 and bcl-2 mRNA in human and rat prostate at
different biological condition.
Materials and Methods : This study was performed in two ways, with animal model
and human prostate. As animal model, the rats were castrated surgically or
chemically(5-alpha reductase inhibitor) and their prostates were collected according to
the schedule. Pattern of expression changes in p57 and bcl-2 mRNA was observed. In
human prostate, three normal prostates from young 30th, five benign hyperplastic
prostates and five cancerous prostates were collected for evaluation of p57 mRNA
expression. The evaluation of the expression of those genes was done by in situ
hybridization.
Results : The expression of the p57 mRNA was observed at the cytoplasm in all
three types of the prostate tissues. The expressions of mRNA message were increased
from the post-orchiectomy three days group up to postorchiectomy two weeks. After
two weeks, there were little change in expression of the p57 mRNA. Compared with
normal prostate group, the expressions of p57 mRNA were reduced in BPH and prostate
cancer groups without treatment. The expression of bcl-2 was increased in expression
upto postorchiectomy 4th week and reduced. In BPH and prostate cancer, the expression
of the bcl-2 mRNA was increased in comparison with normal prostate.
Conclusions : With above experiment, the expression patterns of p57 and bcl-2
mRNAs reversed and the prostate cancer showed reduced expression. This result
suggests that p57 and bel-2 may play important roles in differentiation of BPH and
prostatic cancer. The differentiation of BPH and prostate cancer by p57 and bcl-2 were
impossible.

Å°¿öµå

p57 mRNA; bcl-mRNA; Prostate;

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