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Expression Patterns of Adenoviral Green Fluorescent Protein Gene in Human Cancer Cell Lines

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¿ÀÃæÈÆ ( Oh Chung-Hun ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­»ý¸®Çб³½Ç
È«½ÂÈñ ( Hong Seung-Hee ) - ÇѺϴëÇб³ ½ÄÇ°¿µ¾çÇаú

Abstract

À¯ÀüÀÚÀÇ ¼¼Æ÷ ³» Àü´Þ ¹× ¹ßÇöÀÇ È¿À²À» ³ôÀ̱â À§ÇÏ¿© ´Ù¾çÇÑ ¹æ¹ýµéÀÌ °³¹ßµÇ°í ÀÖÀ¸¸ç, °¢°¢ÀÇ ¹æ¹ýµé¿¡ ´ëÇÑ ÃÖÀûÀÇ Á¶°ÇÀ» È®¸³Çϱâ À§ÇÑ ¿¬±¸µéÀÌ È°¹ßÈ÷ ÀÌ·ç¾îÁö°í ÀÖ´Ù. ÀÌ ¿¬±¸¿¡¼­´Â Ç¥ÁöÀ¯ÀüÀڷμ­ GFP¸¦ Æ÷ÇÔÇÑ ¾Æµ¥³ë¹ÙÀÌ·¯½º¸¦ ÀÌ¿ëÇÏ¿© ¾Ï ¼¼Æ÷Áֵ鿡¼­ À¯ÀüÀÚÀÇ ¹ßÇö ¾ç»óÀ» ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù. ¿¬±¸ ¹æ¹ýÀ¸·Î´Â ¾Æµ¥³ë¹ÙÀÌ·¯½º¿¡ GFP À¯ÀüÀÚ¸¦ Æ÷ÇÔÇÑ Ad-CMV-GFP¸¦ Á¦ÀÛÇÏ¿´°í, GFP À¯ÀüÀÚ ¹ßÇö¿¡´Â cytomegalrovirus(CMV) promoter¸¦ ÀÌ¿ëÇÏ¿´´Ù. ¿©·¯ ¾Ï ¼¼Æ÷ÁÖ¿¡ Ad-CMV-GFP¸¦ 0.1¥ìl, 1¥ìl, 10¥ìl ³óµµ·Î ó¸® ÇÑ ´ÙÀ½ ½Ã°£¿¡ µû¶ó GFPÀÇ ¹ßÇö ¾ç»óÀ» Çü±¤Çö¹Ì°æÀ» ÅëÇÏ¿© °üÂûÇÏ¿´´Ù. ¾Ï ¼¼Æ÷ÁÖ¿¡¼­ GFP À¯ÀüÀÚÀÇ ¹ßÇöÀ» ºñ±³Çغ¸¸é, À§¾Ï ¼¼Æ÷ÁÖÀÎ AGS°¡ ´ëÀå¾Ï ¼¼Æ÷ÁÖÀÎ HT-29¿Í SNU-C4º¸´Ù Ad-CMV-GFPÀÇ ¹ßÇöÀÌ ³ô°Ô ³ªÅ¸³»°í ÀÖ´Ù. ƯÈ÷ AGS¿¡¼­´Â 0.1¥ìlÀÇ ³·Àº ³óµµ·Î ó¸®ÇÑ ´ÙÀ½³¯ºÎÅÍ GFP°¡ ¹ßÇöµÇ¾ú°í 2ÀÏ ÈÄ¿¡´Â ÇöÀúÈ÷ Áõ°¡ÇÏ´Â °ÍÀ» È®ÀÎ ÇÒ ¼ö ÀÖ¾ú´Ù. ¹Ý¸é¿¡ HT-29¿Í SNU-C4¿¡¼­´Â AGSº¸´Ù ÀÛÀº ¼öÀÇ ¼¼Æ÷¿¡¼­ GFP°¡ ¹ßÇöµÇ¾ú´Ù. ±×·¯¹Ç·Î AGS¿¡¼­ GFPÀÇ ¹ßÇöÀÌ °¡Àå ³ô°Ô ³ªÅ¸³ª°í ÀÖÀ¸¸ç, 1¥ìl¿Í 10¥ìlÀÇ ³óµµ¿¡¼­´Â 1ÀÏ ÈÄ¿¡ ´ëºÎºÐÀÇ ¼¼Æ÷¿¡¼­ 3.3E+105ÀÇ ¹Ðµµ·Î GFP°¡ ¹ßÇöµÇ°í ÀÖÀ¸¸ç, 2ÀÏ ÈÄ¿¡´Â ¹ßÇö ¾çÀÌ 5¹è ÀÌ»ó ¸Å¿ì ³ô¾ÆÁüÀ» È®ÀÎ ÇÒ ¼ö ÀÖ¾ú´Ù. HT-29ÀÇ °æ¿ì, 0.1¥ìlÀÇ ³óµµ·Î ó¸®ÇÑ ÈÄ 1ÀÏ¿¡ ºñÇÏ¿© 2ÀÏ ÈÄ¿¡ ¾à 2¹è Á¤µµ·Î Çü±¤ÀÇ ¹Ðµµ°¡ Áõ°¡ÇÏ´Â °ÍÀ» ¾Ë ¼ö ÀÖ´Ù. ¶ÇÇÑ 1¥ìlÀÇ ³óµµ¿¡¼­ 2ÀÏ ÈÄ¿¡ GFPÀÇ ¹ßÇö ¾çÀÌ Ãִ븦 ³ªÅ¸³»°í ÀÖ´Ù. SNU-C4¿¡¼­ GFPÀÇ ¹ßÇöÀÇ Æ¯Â¡Àº Ad-CMV-GFPÀÇ ³óµµ¿Í ó¸®ÇÑ ½Ã°£¿¡ ºñ·ÊÇÏ¿© Áõ°¡ÇÏ´Â ¾ç»óÀ» º¸ÀÌ°í ÀÖ´Ù. ³·Àº ³óµµÀÇ Ad-CMV-GFP°¡ ¼¼Æ÷ ³» ¹ßÇö¿¡ ¹ÌÄ¡´Â ½Ã°£ÀÇ ¿µÇâÀ» ¾Ë¾Æº¸±â À§ÇÏ¿©, 0.1¥ìl·Î ó¸®ÇÑ ÈÄ, 2ÀÏ°ú 4ÀÏ¿¡ °¢°¢ GFPÀÇ ¹ßÇöÀ» °üÂûÇÏ¿´´Ù. ±× °á°ú, AGS¿¡¼­´Â 2ÀÏ ÈÄ¿¡ ºñÇÏ¿© 4ÀÏ ÈÄ¿¡ GFPÀÇ ¹ßÇö ¾çÀÌ ¾à 2¹è Á¤µµ Áõ°¡ÇÏÁö¸¸ HT-29¿Í SNU-C4¿¡¼­´Â GFP ¹ßÇöÀÇ Â÷À̸¦ º¸ÀÌÁö ¾Ê°í ÀÖ´Ù. °á·ÐÀûÀ¸·Î À¯ÀüÀÚ Àü´Þ º¤Åͷμ­ ¾Æµ¥³ë¹ÙÀÌ·¯½º´Â »ç¶÷ÀÇ ¾Ï ¼¼Æ÷Áֵ鿡 GFP À¯ÀüÀÚ¸¦ ¹ßÇöÇϴµ¥ »ó´çÈ÷ È¿À²ÀûÀÎ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ±×·¯³ª °¢°¢ÀÇ ¾Ï ¼¼Æ÷Áֵ鿡¼­ À¯ÀüÀÚÀÇ ³óµµ ¹× ½Ã°£¿¡ µû¶ó ¹ßÇö ¾ç»ó¿¡ Â÷ÀÌ°¡ ÀÖ´Ù´Â °Íµµ ¾Ë ¼ö ÀÖ¾ú´Ù. ±×·¯¹Ç·Î ¾Æµ¥³ë¹ÙÀÌ·¯½º¸¦ ÀÌ¿ëÇÏ¿© À¯ÀüÀÚ¸¦ Àü´ÞÇÏ°í ¹ßÇöÇÏ°íÀÚ ÇÒ °æ¿ì¿¡´Â ¾Ï ¼¼Æ÷ÁÖÀÇ Æ¯Â¡À» °í·ÁÇÏ¿© °¡Àå È¿À²ÀûÀÎ ÃÖÀû Á¶°ÇÀ» È®¸³ÇÏ´Â °ÍÀÌ ÇÊ¿äÇÒ °ÍÀ¸·Î »ç·áµÈ´Ù.

Many methods have been developed for more efficient gene delivery and expression in human cells. A number of studies have been performed in achieving successful gene delivery and expression conditions. We investigated differential gene expression patterns after delivery adenoviral vector containing green fluorescent protein(GFP) gene into human cancer cell lines. We constructed recombinant adenoviral Ad-CMV-GFP containing CMV promoter and GFP gene. The efficiency of gene expression was assessed by observation GFP expressing cells using fluorescent microscopy after transfer of Ad-CMV-GFP in concentrations of 0.1¥ìl. 1¥ìl. 10¥ìl. At first, we evaluated expression patterns of gene in several human cancer cell lines, gastric adenocarcinoma cell line AGS was showed high level of GFP expression compared with colorectal adenocarcinoma cell line HT-29. After transfer 0.1¥ìl of Ad-CMV-GFP in AGS, we could found that GFP expression cells were observed in next day and highly increased 2 days. While, small number of GFP expressing cells were examined in HT-29 and SNU-C4. Therefore, these data showed that AGS was expressed the highest level of GFP and almost AGS cells seems to express GFP in concentration of 1¥ìl of Ad-CMV-GFP. GFP expression pattern in HT-29 reveal that expression was low in next day after gene transfer but significantly increase expression level in 2 days. In case of SNU-C4, GFP expression increased with increasing concentration of Ad-CMV-GFP and transfer times. For examine effects of transfer times in small amount gene, we transfer in concentration of 0.1¥ìl Ad-CMV-GFP and detected GFP expression patterns after 2 days or 4 days. As a result, expression level of GFP in AGS was increase about 2 fold after 4 days compared with 2 days, but any difference of GFP expression levels were not showed in HT-29 and SNU-C4. Our study suggested that adenovirus was very efficient gene transfer vector for gene expression in human cancer cell lines. In addition to, we also demonstrated that gene expression patterns was dependent on each human cell lines. Therefore, further studies will be needed to confirm the optimum conditions for efficient gene delivery and expression in each target cell lines with consideration to cellular properties.

Å°¿öµå

Adenovirus; GFP; Expression pattern; Human cancer cell lines

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