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A STUDY ON THE RADIOSENSITIVITY AND CHEMOSENSITIVITY OF KB CELL LINE IN VITRO

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Abstract

»ç¶÷ ÆíÆò¼¼Æ÷¾ÏÁ¾ KB¼¼Æ÷ÁÖ¿¡ ´ëÇÑ ¹æ»ç¼± ¹× Ç×¾ÏÁ¦ÀÇ ¼¼Æ÷µ¶¼º¹ÝÀÀÀ» ¾Ë¾Æº¸±â À§ÇÏ
¿© ¹æ»ç¼± ´Üµ¶Á¶»ç±ºÀº 2, 4, 6, 8, 10GyÀÇ ¹æ»ç¼±À» ´ÜȸÁ¶»çÇÏ¿´À¸¸ç Ç×¾ÏÁ¦ ´Üµ¶Åõ¿©±º
Àº 2§¶/§¢³óµµÀÇ bleomycin ¶Ç´Â cisplatinÀ» ´Üµ¶Åõ¿©ÇÏ¿´´Ù. ¶ÇÇÑ ¹æ»ç¼±Á¶»ç¿Í Ç×¾ÏÁ¦Åõ¿©
¸¦ º´¿ëÇÑ °æ¿ì¿¡´Â 2, 4, 6, 8, 10GyÀÇ ¹æ»ç¼±À» ´ÜȸÁ¶»çÇÑ Á÷ÈÄ 2§¶/§¢³óµµÀÇ bleomycin
¶Ç´Â cisplatinÀ» Åõ¿©ÇÏ¿´´Ù. °¢°¢ÀÇ ½ÇÇè¹æ¹ý¿¡ µû¸¥ ¼¼Æ÷»ýÁ¸À²À» ±¸ÇÏ°í ¼¼Æ÷»ýÁ¸°î¼±À»
ÀÛ¼ºÇÑ ÈÄ ¼¼Æ÷µ¶¼º¹ÝÀÀÀ» Æò°¡ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. KB¼¼Æ÷ÁÖ¿¡ 2. 4, 6, 8, 10GyÀÇ ¹æ»ç¼±À» °¢°¢ ´ÜȸÁ¶»çÇÑ °æ¿ì ºñ±³Àû ±â¿ï±â°¡ Å« ¼¼
Æ÷»ýÁ¸°î¼±À» ³ªÅ¸³»¾ú´Ù.
2. KB¼¼Æ÷ÁÖ¿¡ 2§¶/§¢ ³óµµÀÇ bleomycin ¶Ç´Â cisplatinÀ» °¢°¢ ´Üµ¶Åõ¿©ÇÑ °æ¿ì
bleomycin Åõ¿©±º°ú ´ëÁ¶±º°úÀÇ ¼¼Æ÷µ¶¼ºÈ¿°úÀÇ Â÷ÀÌ´Â ¾ø¾úÀ¸³ª cisplatinÅõ¿©±º°ú ´ëÁ¶±º
°úÀÇ ¼¼Æ÷µ¶¼ºÈ¿°úÀÇ Â÷ÀÌ´Â ÀÎÁ¤µÇ¾ú´Ù. ¶ÇÇÑ bleomycin°ú cisplatinÀÇ ¼¼Æ÷µ¶¼ºÈ¿°úÀÇ Â÷
À̵µ ÀÎÁ¤µÇ¾ú´Ù.
3. KB¼¼Æ÷ÁÖ¿¡ ¹æ»ç¼±À» ´Üµ¶Á¶»çÇÑ °æ¿ì¿Í ¹æ»ç¼±Á¶»ç¿Í 2§¶/m1³óµµÀÇ bleomycinÅõ¿©
¸¦ º´¿ëÇÑ °æ¿ì 2Gy¿Í 10GyÀÇ ¹æ»ç¼±·®¿¡¼­ À¯ÀÇÇÑ ¼¼Æ÷»ýÁ¸À²ÀÇ Â÷À̸¦ º¸¿´´Ù.
4. KB¼¼Æ÷ÁÖ¿¡ ¹æ»ç¼±À» ´Üµ¶Á¶»çÇÑ °æ¿ì¿Í ¹æ»ç¼±Á¶»ç¿Í 2§¶/§¢ ³óµµÀÇ cisplatinÅõ¿©¸¦
º´¿ëÇÑ °æ¿ì 2, 4, 6, 8, 10GyÀÇ ¸ðµç ¹æ»ç¼±·®¿¡¼­ À¯ÀÇÇÑ ¼¼Æ÷»ýÁ¸À²ÀÇ Â÷À̸¦ ³ªÅ¸³»¾ú´Ù.
5. KB¼¼Æ÷ÁÖ¿¡ ¹æ»ç¼±Á¶»ç¿Í 2§¶/§¢³óµµÀÇ bleomycin ¶Ç´Â cisplatinÅõ¿©¸¦ º´¿ëÇÑ °æ¿ì
µÎ ±º »çÀÌ¿¡¼­´Â 10GyÀÇ ¹æ»ç¼±·®¿¡¼­¸¸ ¼¼Æ÷»ýÁ¸À²ÀÇ Â÷À̸¦ º¸¿´´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 corves were obtained
for human squamous cell carcinoma KB cell line after radiation exposure and/or
administration of antitumor drugs. 2, 4, 6, 8, 10Gy were irradiated at a dose rate of
210cGy/min using 60Co Irradiator ALDORADO 8. After irradiation, KB cell
lines (3¡¿104ce11s/§¢) were exposed to 2§¶/§¢ of bleomycin or cisplatin for 1 hour. The
viable cells were determined by MTT assay for each radiation dose and/or each drug at
the 4th day. And they were compared to control values.
The obtained results were as follows :
1. The slope of the surviving curve after irradiation of 2, 4, 6, 8, 10Gy on KB cell line
was relatively steep.
2. There was no significant difference between the cytotoxicity of bleomycin compared
to control group. But, there was significant difference between the cytotoxicity of
cisplatin compared to control group. And the cytotoxicity of cisplatin was greater than
that of bleomycin on KB cell line.
3. There were significant differences of surviving fractions after irradiation of 2Gy and
10Gy with 2§¶/§¢ of bleomycin compared with the groups of irradiation only on KB cell
line.
4. There were significant differences of surviving fractions after irradiation of 2, 4, 6,
8, 10Gy with 2§¶/§¢ of cisplatin compared with the groups of irradiation only on KB cell
line.
5. There was significant difference of surviving fraction between groups after
irradiation of 10Gy with 2§¶/§¢ of bleomycin and cisplatin.

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