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A Study on the Radiosensitivity and Chemosensitivity of YAC-1 Cell Line in Vitro

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Abstract

¹æ»ç¼± ¹× Ç×¾ÏÁ¦ÀÇ ¼¼Æ÷µ¶¼º¹ÝÀÀÀ» ¾Ë¾Æº¸±â À§ÇÏ¿©, ½ÇÇè½Ç¿¡¼­ ¹è¾çµÈ mouse
Iymphoma YAC-1 ¼¼Æ÷ÁÖ¸¦ ´ë»óÀ¸·Î ¹æ»ç¼± ´Üµ¶Á¶»ç±ºÀº 2, 4, 6, 8, 10GyÀÇ ¹æ»ç¼±À» ´Ü
ȸÁ¶»çÇÏ¿´À¸¸ç, Ç×¾ÏÁ¦ ´Üµ¶Åõ¿©±ºÀº 0.2, 2, 20§¶/§¢³óµµÀÇ bleomycin ¶Ç´Â cisplatinÀ» ´Ü
µ¶Åõ¿©ÇÏ¿´´Ù. ¶ÇÇÑ ¹æ»ç¼±Á¶»ç¿Í Ç×¾ÏÁ¦¸¦ º´¿ëÇÑ °æ¿ì¿¡´Â 2, 4, 6, 8, 10GyÀÇ ¹æ»ç¼±À» ´Ü
ȸÁ¶»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. YAC-1¼¼Æ÷ÁÖ¿¡ 2, 4, 6, 8, lOGyÀÇ ¹æ»ç¼±À» ´Üµ¶Á¶»çÇÑ °æ¿ì ¼¼Æ÷»ýÁ¸°î¼±Àº ¿Ï¸¸ÇÑ
±âÀ»±â¸¦ ³ªÅ¸³»¾ú´Ù.
2. YAC-1 ¼¼Æ÷ÁÖ¿¡ ´ëÇÑ bleomycin ¶Ç´Â cisplatinÀÇ ¼¼Æ÷µ¶¼º¹ÝÀÀÀº 0.2, 2, 20§¶/§¢ÀÇ
¸ðµç ³óµµ¿¡¼­ ¼¼Æ÷»ýÁ¸À²ÀÌ °¨¼ÒµÇ¾úÀ¸¸ç, cisplatinÀÌ bleomycinº¸´Ù ¼¼Æ÷µ¶¼ºÈ¿°ú°¡ ´õ
Å©°Ô ³ªÅ¸³µ´Ù(P<0.01).
3. YAC-1 ¼¼Æ÷ÁÖ¿¡ ¹æ»ç¼±À» ´Üµ¶Á¶»çÇÑ °æ¿ì¿Í ¹æ»ç¼±Á¶»ç¿Í 2§¶/§¢ÀÇ bleomycinÀ» º´
¿ëÇÑ °æ¿ì 4Gy, 6Gy ¹× 8Gy»çÀÌ¿¡¼­´Â À¯ÀÇÇÑ ¼¼Æ÷»ýÁ¸À²ÀÇ Â÷À̸¦ º¸ÀÌÁö ¾Ë¾Ò´Ù.
4. YAC-1 ¼¼Æ÷ÁÖ¿¡ ¹æ»ç¼±À» ´Üµ¶Á¶»çÇÑ °æ¿ì¿Í ¹æ»ç¼±Á¶»ç¿Í 2§¶/§¢ÀÇ cisplatinÀ» º´¿ë
ÇÑ °æ¿ì 2Gy¿Í 10Gy¿¡¼­ À¯ÀÇÇÑ ¼¼Æ÷»ýÁ¸À²ÀÇ Â÷À̸¦ ³ªÅ¸³»¾ú´Ù(P<0.05).
5. ¹æ»ç¼± ´Üµ¶Á¶»ç±º°ú ¹æ»ç¼±Á¶»ç¿Í 2§¶/§¢ÀÇ bleomycin ¶Ç´Â cisplatinÀ» º´¿ëÇÑ °æ¿ì
µÎ ±º »çÀÌ¿¡¼­´Â 2, 4, 6, 8, l0GyÀÇ ¸ðµç ¼±·®¿¡¼­ À¯ÀÇÇÑ ¼¼Æ÷»ýÁ¸À²ÀÇ Â÷À̸¦ º¸¿´´Ù
(P<0.05).
#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 mouse Iymphoma YAC-1 cell line using semiautomated MTT assay.
2, 4, 6, 8, 10Gy were irradiated at a dose rate of 210cGy/min using 60Co
Irradiator ALDORADO 8. After irradiation, YAC-1 cell lines(3¡¿104 cells/
§¢) were exposed to bleomycin or cisplatin for 1 hour.
The viable cells were determined for each radiation dose and/or each concentration of
drug at the 4th day. And they were compared to control values.
The obtained results were as follows
1. The surviving curve with gentle slope was obtained after irradiation of 2, 4, 6, 0,
10 Gy on YAC-1 cell line.
2. The cytotoxicity of bleomycin or cisplatin was increased significantly at all
concentration of 0.2§¶/§¢, 2§¶/§¢ and 20§¶/§¢ on YAC-1 cell line (P<0.01). And the
cytotoxicity of cisplatin was greater than that of bleomycin at all concentration on
YAC-1 cell line (P<0.01).
3. There were no significant differences of surviving fractions among 4Gy, 6Gy and
8Gy after irradiation of each radiation dose with 2§¶/§¢ of bleomycin compared with
irradiation only on YAC-1 cell line.
4. There was significant difference of surviving fraction between 2Gy and 10Gy after
irrdiation of each radiation dose with 2§¶/§¢ of cisplatin compared with irradiation only
on YAC-1 cell line(P<0.05).
5. There were significant differences of surviving fractions between the groups of
irradiation only and the groups of irradiation with 2§¶/§¢ of bleomycin or cisplatin at all
doses of 2, 4, 6, 8 and 10Gy on YAC-1 cell line(P<0.05).

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