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±èÇö¼÷ ( Kim Hyun-Sook ) 
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°­±â¹® ( Kang Ki-Mun ) 
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ÀÌ»ó¿í ( Lee Sang-Wook ) 
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³ªÀç¹ü ( Na Jae-Boem ) 
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ä±Ô¿µ ( Chai Gyu-Young ) 
°æ»ó´ëÇб³ ÀÇ°ú´ëÇÐ ¹æ»ç¼±Á¾¾çÇб³½Ç

Abstract

¸ñ Àû: ÀçÁ¶ÇÕ Ç¥ÇǼºÀåÀÎÀÚ´Â(rhEGF) ´Ù¾çÇÑ Ç¥ÇÇ¿Í »óÇÇ ¼¼Æ÷ÀÇ Áõ½ÄÀ» ÀÚ±ØÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ¹æ»ç¼±ÀÌ Á¶»çµÈ ¼¶À¯¾Æ¼¼Æ÷ÀÇ Áõ½Ä¿¡ rhEGFÀÇ È¿°ú¸¦ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.

´ë»ó ¹× ¹æ¹ý: Àΰ£¿¡¼­ ±â¿øÇÑ ¼¶À¯¾Æ¼¼Æ÷¸¦ ÃÊ´ë¹è¾ç(primary culture)ÇÑ ¼¼Æ÷¸¦ ÀÌ¿ëÇÏ¿´´Ù. ´ë¿õÁ¦¾à¿¡¼­ À¯ÀüÀÚ ÀçÁ¶ÇÕÇÏ¿© ´ëÀå±Õ¿¡¼­ ¹ßÇöÇÏ¿© »ý»êÇÑ rhEGF¸¦ Á¦°ø ¹Þ¾Æ »ç¿ëÇÏ¿´´Ù. ¹æ»ç¼± Á¶»ç´Â 4 MV ¼±Çü°¡¼Ó±â(CLINAC 600C, Varian, Palo Alto, CA, USA)¸¦ ÀÌ¿ëÇÏ¿© ºÐ´ç 2 Gy ³»¿ÜÀÇ ¼±·®·ü·Î ±ÕÀÏÇÏ°Ô Á¶»çÇÏ¿´´Ù. Á¶»çµÈ ¹æ»ç¼±·®Àº 8 GyÀ̾ú´Ù. »ýÁ¸¼¼Æ÷¼ö´Â trypan blue ¿°»ö¹ýÀ» ÀÌ¿ëÇÏ¿´°í, rhEGF¿¡ ÀÇÇÑ ¼¼Æ÷ÁÖ±âÀÇ º¯È­¸¦ °üÂûÇϱâ À§ÇÏ¿© À¯¼¼Æ÷ ºÐ¼®¹ýÀ» ½ÃÇàÇÏ¿´´Ù.

°á °ú: 4 GyÀÇ ¹æ»ç¼±À» Á¶»çÇÑ ÈÄ 7ÀÏ°±îÁö »ýÁ¸ ¼¼Æ÷¼ö¸¦ trypan blue ¿°»ö¹ýÀ» ÀÌ¿ëÇÏ¿© ÃøÁ¤ÇÑ °á°ú ¸ðµç rhEGF ³óµµ(1.0 nM, 10 nM, 100 nM, 1,000 nM )¿¡¼­ ¹æ»ç¼± Á¶»ç ´Üµ¶±ºº¸´Ù »ýÁ¸¼¼Æ÷ ¼ö°¡ ¸¹¾Ò´Ù. ¹æ»ç¼±À» Á¶»çÇÏÁö ¾ÊÀº ¼¶À¯¾Æ¼¼Æ÷¿¡¼­ rhEGF¸¦ 10 nMó¸®ÇÑ ÈÄ FACS scanÀ» ½ÃÇàÇÑ °á°ú ¼¼Æ÷ÁÖ±â Áß¿¡¼­ S±â ºñÀ²ÀÌ Áõ°¡ÇÏ¿´´Ù.

°á ·Ð: ¹æ»ç¼±ÀÌ Á¶»çµÈ ¼¶À¯¾Æ¼¼Æ÷¿¡¼­ rhEGF¸¦ Åõ¿©Çϸé rhEGF¸¦ Åõ¿©ÇÏÁö ¾ÊÀº ¼¶À¯¾Æ¼¼Æ÷¿¡ ºñÇؼ­ ¼¼Æ÷Áõ½ÄÀÌ °¡¼ÓµÊÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.

Purpose: To explore the effect of recombinant human EGF on the proliferation and survival of human fibroblast cell lines following irradiation.

Materials and Methods: Fibroblast was originated human skin and primary cultured. The trypan blue stain assay and MTT assay were used to study the proliferative effects of EGF on human fibroblast cell lines in vitro. An incubation of fibroblasts with rhEGF for 24 hours immediately after irradiation was counted everyday. Cell cycle distributions were analyzed by FACS analysis.

Results: Number of fibroblast was significantly more increased rhEGF (1.0 nM, 10 nM, 100 nM, 1,000 nM) treated cell than control after 8 Gy irradiation. Most effective dose of rhEGF was at 160 nM. These survival differences were maintained at 1 week later. Proportion of S phase was significantly increased on rhEGF treated cells.

Conclusion: rhEGF cause increased fibroblast proliferation following irradiation. We expect that rhEGF was effective for radiation induced wound healing.

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ÀçÁ¶ÇÕ Ç¥ÇǼºÀåÀÎÀÚ;¹æ»ç¼±;¼¶À¯¾Æ¼¼Æ÷
Recombinant human epidermal growth factor;Radiation;Fibroblast cell

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