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AN EXPERIMENTAL STUDY ON THE RADIOSENSITIVITY AND CHEMOSENSITIVITY OF MG-63 CELL LINE

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Abstract

Human osteosarcoma MG-63 ¼¼Æ÷ÁÖ¿¡ ´ëÇÑ ¹æ»ç¼± ¹× Ç×¾ÏÁ¦ÀÇ ¼¼Æ÷µ¶¼º¹ÝÀÀÀ» ¾Ë¾Æº¸
±â À§ÇÏ¿© ½ÇÇè½Ç¿¡¼­ ¹è¾çµÈ MG-63 ¼¼Æ÷ÁÖ(3 104ce11s/§¢)¿¡
60 Co irradiator ALDORADO 8À» ÀÌ¿ëÇÏ¿© ¼±·®À² 210cGy/min·Î 2,4,6,8,
10GyÀÇ ¹æ»ç¼±À» ´ÜȸÁ¶»çÇÏ¿´´Ù. Ç×¾ÏÁ¦Åõ¿©±ºÀº ¹æ»ç¼±Á¶»ç Á÷ÈÄ 0.2, 2, 20¥ìg/§¢ ³óµµÀÇ
b1eo-mycin°ú cisplatinÀÌ ÇÔÀ¯µÈ RPMI ¹è¾ç¾×¿¡ MG-63¼¼Æ÷ÁÖ¸¦ ³Ö¾î ¹è¾ç±â¿¡¼­ 1½Ã°£
º¸°üÇÏ¿´´Ù.
¹æ»ç¼±Á¶»ç¿Í Ç×¾ÏÁ¦Åõ¿© ÈÄ 4ÀÏ°ÀÇ ¼¼Æ÷»ýÁ¸À²À» MTTºÐ¼®À¸·Î ±¸ÇÏ¿© °¢°¢ÀÇ ¼¼Æ÷»ý
Á¸°î¼±À» ÀÛ¼ºÇÏ¿´À¸¸ç ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù
1. MG-63 ¼¼Æ÷ÁÖ´Â 2,4, 6, 8, l0Gy Àü ¼± ·®¿¡¼­ ¿Ï¸¸ÇÑ ±â¿ï±âÀÇ »ýÁ¸°î¼±À» ³ªÅ¸³»¾ú
À¸¸ç 4, 6, 8, l0Gy¿¡¼­ ´ëÁ¶±º°ú À¯ÀÇÇÑ »ýÁ¸À²ÀÇ Â÷À̸¦ º¸¿´´Ù(p<0.05).
2. MG-63 ¼¼Æ÷ÁÖ¿¡ bleomycin°ú cisplatin ´Üµ¶ Åõ¿©½Ã 0.2, 2, 20§¶/§¢ Àü ³óµµ¿¡¼­ ´ëÁ¶
±º°ú À¯ÀÇÇÑ »ýÁ¸À²ÀÇ Â÷À̸¦ ³ªÅ¸³»¾ú°í(p<0.05), ƯÈ÷ 20§¶/§¢¿¡¼­´Â cisplatinÀÌ
bleomycinº¸´Ù ¼¼Æ÷µ¶¼ºÈ¿°ú°¡ ÄÇ´Ù(p<0.01).
3. 2Gy ¹æ»ç¼±Á¶»ç ÈÄ bleomycin°ú cisplatinÀ» Åõ¿©ÇÑ °æ¿ì Ç×¾ÏÁ¦ 2, 20§¶/§¢ ³óµµ¿¡¼­
´ëÁ¶±º°ú À¯ÀÇÇÑ »ýÁ¸À²ÀÇ Â÷À̸¦ ³ªÅ¸³»¾ú´Ù(p<0.01).
4. Bleomycin°ú cisplatin³óµµ°¡ 20§¶/§¢ÀÎ °æ¿ì ¹æ»ç¼±Á¶»ç ´Üµ¶À¸·Î ½ÃÇàÇÑ °æ¿ì¿Í ºñ±³
ÇÏ¿© »ýÁ¸À²ÀÇ Â÷ÀÌ°¡ ÄÇÀ¸³ª(p<0.01), l0Gy ¹æ»ç ¼±Á¶»ç ÈÄ 20§¶/§¢ÀÇ bleomycinÀ» Åõ¿©ÇÑ
°æ¿ì¿¡´Â ¹æ»ç¼± ´Üµ¶Åõ¿©½Ã¿Í ºñ±³ÇÏ¿© À¯ÀÇÇÑ Â÷À̸¦ ³ªÅ¸³»Áö ¾Ê¾Ò´Ù.
#ÃÊ·Ï#
The purpose of this study was to aid in the prediction of tumor cell tolerance to
radiotherapy and/or chemotherapy. For this study, cell surviving curves were obtained
for human osteosarcoma MG-63 cell line using semiautomated MTT assay.
2, 4, 6, 8, l0Gy were irradiated at a dose rate of 210cGy/1in using 60Co
Irradiator ALDORADO 8. After irradiation, MG-63 cell lines(3¡¿104 cells/
§¢) were exposed to bleomycin and cisplatin at concentration of 0.2, 2, 20§¶/§¢ for 1hour
respectively.
The viable cells were determined for each radiation dose and/or each concentration of
drug. And they were compared to control values.
The obtained results were as follows :
1. There was significant difference of surviving fraction at 4, 6, 8, l0Gy on MG-63
cell line(P<0.05),
2. There was significant difference of cytotoxicity of bleomycin or cisplatin at all
concentration of 0.2, 2, 20§¶/§¢ (p<0.05) on MG-63 cell line. The cytotoxicity of cisplatin
was more effective than bleomycin at concentration of 20§¶/§¢ on MG-63 cell line.
3. There was significant difference of cytotoxicity of bleomycin or cisplatin at all
concentration after irradiation of 2GY on MG-63 cell line.
4. There was significant difference of cytotoxicity of bloemycin or cisplatin at
concentration of 20Gy on after irradiation that of irradiation alone(p<0.01). But there was
no significant difference of cytotoxicity of bleomycin at concentration of 20§¶/§¢ after
irradiation of l0Gy than that of irradiation alone.

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