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p53, Bcl-2, Apoptosis¿Í ³úÁ¾¾çÀÇ Á¶Á÷ÇÐÀû ¾Ç¼ºµµ¿ÍÀÇ °ü°è Relationship between p53, Bcl-2, Apoptosis and Histologic Grade of Brain Tumors

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±è¼¼Çõ/Se Hyuk Kim Á¶°æ±â/À±¼öÇÑ/Á¶±âÈ«/¾È¿µ¹Î/¾È¿µÈ¯/±èÁ¤¼±/½Éö/Kyung Gi Cho/Soo Han Yoon/Ki Hong Cho/Young Min Ahn/Young Hwan Ahn/Jung Sun Kim/Chul Shim

Abstract

°á ·Ð
³úÁ¾¾çÀÇ Á¶Á÷ÇÐÀû ¾Ç¼ºµµ¿Í p53, bcl-2. apoptosis¿ÍÀÇ °ü°è¸¦ ¾Ë¾Æº¸°íÀÚ 51¸íÀÇ ³úÁ¾¾ç
ȯÀÚ¿¡¼­ ¼ö¼ú½Ã ÀûÃâµÈ Á¶Á÷À» ÀÌ¿ëÇÏ¿© ¿¬±¸¸¦ ½ÃÇàÇÏ¿´À¸¸ç, WHOºÐ·ù¿¡ ÀÇÇÏ¿© ÀÌ Áß
30·Ê´Â ¾ç¼º ³úÁ¾¾ç±º, 21·Ê´Â ¾Ç¼º ³úÁ¾¾ç±ºÀ¸·Î ºÐ·ùÇÏ¿© °á°ú¸¦ ºñ±³ÇÏ¿´´Ù
Á¾¾ç¾ïÁ¦ À¯ÀüÀÚÀ̸ç DNA¼Õ»ó¼¼Æ÷¸¦ apoptosis°úÁ¤ÀÇ Ãʱâ´Ü°è¿¡¼­ ÀÛ¿ëÇÏ¿© ¼¼Æ÷ÀÇ
apoptotic deletionÀ» À¯¹ßÇÏ´Â p53Àº ¸é¿ªÁ¶Á÷È­Çп°»ö»ó ¾ç¼º ³úÁ¾¾ç±º(Æò±Õ ¾ç¼ºÁö¼ö=0.9)
¿¡ ºñÇØ ¾Ç¼º ³úÁ¾¾ç±º(Æò±Õ ¾ç¼º Áö¼ö=16.0)¿¡¼­ Åë°èÇÐÀûÀ¸·Î ÀÇ¹Ì ÀÖ°Ô ³ô°Ô °¨ÁöµÇ¾î
p53º¯ÀÌ°¡ ¾Ç¼º±º¿¡¼­ ¸¹À½À» ¾Ë ¼ö ÀÖ¾ú´Ù(P=0.003)
¿ø½ÃÁ¾¾ç À¯ÀüÀÚÀ̸ç apoptosisÀÇ ÃÖÁ¾´Ü°è¿¡¼­ blocker·Î ÀÛ¿ëÇÏ´Â ball-2´Â ¸é¿ªÁ¶Á÷È­
Çп°»ö»ó ¾ç¼º ³úÁ¾¾ç±º(Æò±Õ ¾ç¼º Áö¼ö=2.9)°ú ¾Ç¼º ³úÁ¾¾ç±º(Æò±Õ ¾ç¼º Áö¼ö= 10.5)°£¿¡
ÀÇ¹Ì ÀÖ´Â Â÷ÀÌ´Â ¾ø¾ú´Ù(P=0.118).
In-situ end labeling techniqueÀ» ÀÌ¿ëÇÏ¿© apoptotic cellÀ» ÃøÁ¤ÇÑ °á°ú ¾ç¼º ³úÁ¾¾ç±º
(Æò±Õ ¾ç¼º Áö¼ö=0.2)¿¡ ºñÇØ ¾Ç¼º ³úÁ¾¾ç±º(Æò±Õ ¾ç¼º Áö¼ö=2.3)¿¡¼­ Åë°èÇÐÀûÀ¸·Î ÀÇ¹Ì ÀÖ
°Ô ³ô¾Ò´Ù(P=0.003).
¿¬±¸´ë»ó Àüü±ºÀ» º¼ ¶§ ¸é¿ªÁ¶Á÷È­Çп°»ö»ó °¨ÁöµÇ´Â p53 º¯ÀÌ¿Í apoptosis»çÀÌ¿¡´Â ÀÇ
¹Ì ÀÖ´Â »ó°ü°ü°è°¡ ÀÖ¾ú°í(P=0.012. »ó°ü°è¼ö=0.349), bcl-2 À¯ÀüÀÚÀÇ Ç¥ÇöÁ¤µµ¿Í apoptosis
»çÀÌ¿¡´Â ÀÇ¹Ì ÀÖ´Â »ó°ü°ü°è°¡ ¾ø¾ú´Ù(P=0.318) ¶ÇÇÑ apoptosis°úÁ¤¿¡¼­ ´Ù¸¥ ½Ã±â¿¡ ¼­·Î
»ó¹ÝµÈ ÀÛ¿ëÀ» ÇÏ´Â p53 À¯ÀüÀÚ¿Í bcl-2 À¯ÀüÀÚÀÇ °ü°è¸¦ °üÂûÇÑ °á°ú p53 º¯ÀÌ¿Í bel¶ã À¯
ÀüÀÚ Ç¥ÇöÁ¤µµ »çÀÌ¿¡´Â ÀÇ¹Ì ÀÖ´Â »ó°ü °ü°è°¡ ¾ø¾ú´Ù(P=0.583).
º» ¿¬±¸°á°ú¸¦ Á¾ÇÕÀûÀ¸·Î ºÐ¼®Çغ¸¸é Á¾¾çÀÇ Á¶Á÷ÇÐÀû ¾Ç¼ºµµ°¡ ³ôÀ»¼ö·Ï p53º¯ÀÌ°¡ ¸¹
ÀÌ Á¸ÀçÇÏ¸ç ¶ÇÇÑ DNA¼Õ»óµµ ¸¹¾Æ apoptosis°¡ ¸¹ÀÌ ÀϾ³ª, ³úÁ¾¾çÀÇ Á¶Á÷ÇÐÀû ¾Ç¼ºµµ
¿Í ball-2¿Í´Â »ó°ü°ü°è°¡ ¾ø´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
#ÃÊ·Ï#
We studied thirty benign and twenty-one malignant brain tumors in order to
investigate the relationship between p53, bcl-2 apoptosis and histologic grade of brain
tumors. For the study of p53 and bcl-2 gene expression, we used immunohistochemical
staining method using monoclonal antibodies to p53 and bcl-2 ; and, for apoptosis.
In-situ end labeling technique was used. The malignant group showed significantly
higher p53 and apoptosis positive index(PI) than the benign group(mean p53 PI,
malignant :16.0 benign : 0.9/mean apoptosis PI, malignant :2.3 benign : 0.2)(P=0.003) ;
but bcl-2 positive index was not significantly different between two groups(P=0.118).
Correlation between p53 mutation and apoptosis PI was statistically significant(P=0.012
Pearson coefficient=0.349) ; but correlation between bcl-2 expression and apoptosis PI
was not(P=0.318). Moreover, correlation between p53 mutation and bcl-2 expression was
not statistically significant(P=0.583).
These results suggest that higher p53 mutation tens to exist in the group of tumors
with higher malignant histologic grades. Furthermore, it case be concluded that great
DNA damage reflected by higher frequency of apoptosis tends to exits in the group of
higher frequency of apoptosis tends to exist in the group of higher malignant histologic
grade.

Å°¿öµå

Histologic grade of brain tumor; p53 mutation; bcl-2 expression; Apoptosis;

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