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Efficiency of Gene Delivery-complexed with Cationic Lipid in Human Cancer Cell Lines

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ÃÖÁ¾¼± ( Choe Jong-Seon ) - °­¿ø´ëÇб³ ÀÇÇÐÀü¹®´ëÇпø ÀÇÇаú ¹Ì»ý¹°Çб³½Ç
À̼®ÁØ ( Lee Suk-Jun ) - ´Ü±¹´ëÇб³ üÀ°´ëÇРűǵµÇаú
°ûÈñÁø ( Kwak Hee-Jin ) - Çѱ¹º¸°Çº¹ÁöÀη°³¹ß¿ø
È«½ÂÈñ ( Hong Seung-Hee ) - ÇѺϴëÇб³ ½ÄÇ°¿µ¾çÇаú

Abstract

¿¬±¸¸ñÀû: À¯ÀüÀÚÀÇ ±â´ÉÀ» ¹àÈ÷°í »ýü ³»¿¡¼­ÀÇ ¿ªÇÒÀ» ¿¬±¸Çϴµ¥ ÇÊ¿äÇÑ ´Ù¾çÇÑ À¯ÀüÀÚ Àü´Þ ¹æ¹ýµéÀÌ °³¹ßµÇ°í ÀÖÀ¸¸ç, È¿À²¼º°ú ¾ÈÀü¼º µî ¿©·¯ Á¶°ÇµéÀ» ¸¸Á·½Ãų ¼ö ÀÖ´Â ÃÖÀûÀÇ ¹æ¹ýÀ» È®¸³Çϱâ À§ÇÑ ¿¬±¸°¡ È°¹ßÈ÷ ÁøÇàµÇ°í ÀÖ´Ù. ÀÌ ¿¬±¸¿¡¼­´Â À¯ÀüÀÚ Àü´Þ ¹æ¹ýÀ¸·Î ¾çÀ̿¼º ÁöÁúÀ» ÀÌ¿ëÇÏ¿© »ç¶÷ÀÇ ¿©·¯ ¾Ï ¼¼Æ÷ÁÖ¿¡¼­ À¯ÀüÀÚ Àü´ÞÀÇ È¿À²À» ºñ±³ÇÏ°íÀÚ ÇÏ¿´´Ù.

¿¬±¸¹æ¹ý: ¿¬±¸¹æ¹ýÀ¸·Î´Â GFP plasmid¸¦ ¾çÀ̿¼º ÁöÁúÀÎ lipofectamin LTX¿Í º¹ÇÕü¸¦ Çü¼º½ÃŲ ÈÄ, ¿©·¯ Á¾·ùÀÇ ¾Ï ¼¼Æ÷ÁÖ¿¡ Àü´ÞÇÏ¿© GFPÀÇ ¹ßÇö ¾ç»óÀ» Çü±¤Çö¹Ì°æ°ú FACS¸¦ ÅëÇÏ¿© ºÐ¼®ÇÏ¿´´Ù.

°á°ú: °¢°¢ÀÇ ¾Ï ¼¼Æ÷ÁÖ¿¡¼­ GFP À¯ÀüÀÚ ¹ßÇöÀ» °üÂûÇغ¸¸é, HepG2¿Í A549ÀÇ °æ¿ì´Â À¯ÀüÀÚ Àü´Þ 24½Ã°£ ÈÄ¿¡´Â GFP¸¦ ¹ßÇöÇÏ´Â ¼¼Æ÷°¡ °ÅÀÇ ¾øÀ¸³ª 48½Ã°£ ÈÄ¿¡´Â 500 ng¿¡¼­ ¾à°£ Áõ°¡ÇÏ´Â °ÍÀ» ¾Ë ¼ö ÀÖ´Ù. HCT116´Â 24½Ã°£ ÈÄ¿¡ 100 ng¿¡¼­ ÀûÀº ¼öÀÇ GFP ¹ßÇö ¼¼Æ÷¸¦ °üÂû ÇÒ ¼ö ÀÖÀ¸¸ç 500 ng¿¡¼­´Â ´õ¿í ¸¹Àº ¼¼Æ÷µéÀÌ GFP¸¦ ¹ßÇöÇÏ°í ÀÖ´Ù. 48½Ã°£ ÈÄ¿¡´Â 24½Ã°£°ú Å©°Ô Â÷ÀÌ´Â ¾øÀ¸¸ç ¾à°£ÀÇ Áõ°¡¸¦ º¸ÀÌ°í ÀÖ´Ù. SKOV3´Â À¯ÀüÀÚ Àü´Þ 24½Ã°£ ÈÄ¿¡ 500 ng¿¡¼­ »ó´çÈ÷ ¸¹Àº ¼¼Æ÷µéÀÌ GFP¸¦ ¹ßÇöÇÏ°í ÀÖÀ¸¸ç, 48½Ã°£ ÈÄ¿¡´Â 100 ng°ú 500 ng¿¡¼­ 24½Ã°£º¸´Ù ´õ¿í Áõ°¡µÈ ¾çÀÇ GFP ¹ßÇöÀ» °üÂû ÇÒ ¼ö ÀÖ¾ú´Ù.
À¯ÀüÀÚ Àü´Þ 48½Ã°£ ÈÄ¿¡ FACS¸¦ ÅëÇÑ GFP ¹ßÇöÀ» ºÐ¼®ÇÑ °á°ú, HepG2´Â 10 ng, 100 ng, 500 ng ³óµµ¿¡¼­ ¸ðµÎ À¯Àü°¡ °ÅÀÇ ¹ßÇöµÇÁö ¾Ê°í ÀÖ´Ù. HCT116°ú A549´Â 10 ng°ú 100 ng¿¡¼­´Â À¯ÀüÀÚ ¹ßÇöÀÌ °ÅÀÇ ÀϾÁö ¾Ê°í ÀÖÀ¸¸ç ³óµµ¸¦ 500 ngÀ¸·Î Áõ°¡½ÃÅ°¸é °¢°¢ 14.19%¿Í 16.57%·Î GFPÀÇ ¹ßÇöÀÌ Áõ°¡ÇÏ´Â °ÍÀ» °üÂû ÇÒ ¼ö ÀÖ´Ù. SKOV3ÀÇ °æ¿ì, 10 ng¿¡¼­´Â À¯ÀüÀÚ ¹ßÇöÀÌ °ÅÀÇ ¾ø°í 100 ngÀÇ ³óµµ¿¡¼­ ±Þ°ÝÈ÷ Áõ°¡ÇÏ¿© 13.14%¸¦ º¸ÀÌ°í ÀÖ´Ù. 500 ngÀÇ ³óµµ¿¡¼­´Â Àüü ¼¼Æ÷ÀÇ 58.10%°¡ GFP¸¦ ¹ßÇöÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¾Ï ¼¼Æ÷Áֵ鰣ÀÇ À¯ÀüÀÚ Àü´ÞÀÇ È¿À²¼ºÀ» ºñ±³Çϸé, 10 ng¿¡¼­´Â ¼¼Æ÷µé°£ÀÇ Â÷À̸¦ º¸ÀÌÁö ¾Ê°í ÀÖ´Ù°¡ 100 ng¿¡¼­ Â÷À̸¦ º¸À̱⠽ÃÀÛÇÏ¿© 500 ng¿¡¼­ ´õ¿í Å« Â÷À̸¦ º¸ÀÌ°í ÀÖ´Ù. 500 ngÀÇ ³óµµ¿¡¼­ ºñ±³Çϸé, SKOV3°¡ HepG2¿¡ ºñÇÏ¿© ¾à 10¹è, HCT116°ú A549¿¡ ºñÇÏ¿© ¾à 4¹è ÀÌ»óÀÇ GFP ¹ßÇöÀÌ ³ôÀº°ÍÀ» ¾Ë ¼ö ÀÖ´Ù.

°á·Ð: °á·ÐÀûÀ¸·Î ¾çÀ̿¼º ÁöÁúÀ» ÀÌ¿ëÇÑ À¯ÀüÀÚ Àü´ÞÀÇ È¿À²Àº ÀÚ±Ã¾Ï ¼¼Æ÷ÁÖÀÎ SKOV3°¡ °¡Àå ³ô°í, ´ÙÀ½À¸·Î Æó¾Ï¼¼Æ÷ÁÖÀÎ A549¿Í ´ëÀå¾Ï ¼¼Æ÷ÁÖÀÎ HCT116À¸·Î ³ªÅ¸³µ´Ù. °£¾ÏÀÇ hepatocellular¿¡¼­ À¯·¡ÇÑ HepG2°¡ °¡Àå ³·Àº À¯ÀüÀÚ Àü´Þ È¿À²À» ³ªÅ¸³»°í ÀÖ´Ù. À¯ÀüÀÚ Àü´Þ ¹× ¹ßÇöÀÇ È¿À²Àº ¼­·Î ´Ù¸¥ ±â°ü¿¡¼­ À¯·¡ÇÑ ¾Ï ¼¼Æ÷ÁÖ¿¡ µû¶ó ¸¹Àº Â÷À̸¦ º¸ÀÌ°í ÀÖ´Â °ÍÀ» È®ÀÎ ÇÒ ¼ö ÀÖ¾ú´Ù. ±×·¯¹Ç·Î ¼¼Æ÷ ³» À¯ÀüÀÚ ¹ßÇöÀº °¢ ¼¼Æ÷ÁÖÀÇ Æ¯¼ºÀ» °í·ÁÇÏ¿© °¡Àå È¿À²ÀûÀÎ À¯ÀüÀÚ Àü´Þ Á¶°ÇÀ» È®¸³ÇÏ´Â °ÍÀÌ ÇÊ¿äÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù.

For investigate intracellular function and role of genes in the biological processes, various gene delivery methods into cell have been developed. Many studies performed to construct optimum conditions of gene delivery into cells and tissues. In this study, we examined efficiency of gene delivery-complexed with cationic lipid vector in human cancer cell lines. GFP plasmids were complexed with cationic lipid and transfected into human cancer cell lines at different concentrations. And then, expression of GFP was analysed with fluorescent microscope and FACS. To determine efficiency of gene delivery, we investigated GFP expression level in various cancer cell lines. GFP expression cells were not shown in hepatocellular carcinoma cell line HepG2 and lung carcimona cell line A549 after 24hr transfection, while, GFP expression cells were observed at 500ng concentration after 48hr transfection. In colorectal carcinoma cell line HCT116, GFP expression cells were observed at 100ng and 500ng concentrations after 24hr transfection and slightly increased at 48hr. After transfection into ovary adenocarcinoma cell line SKOV3, we could found that many cells expressed GFP at 500ng concentration after 24hr and highly elevated GFP expression cells after 48hr. For further evaluate gene expression level, we confirmed GFP expression level by using FACS analysis after 48hr transfection. As a result, HepG2 was expressed GFP in very low level at 10ng, 100ng, and 500ng concentrations. We also identified that GFP was expressed low level at 10ng and 100ng in HCT116 and A549, but highly increased at 500ng concentration to 14.19% and 16.57%, respectively. In case of SKOV3, GFP expression was highly elevated to 13.14% at 100ng and 58.10% at 500ng compared with 10ng transfection. By Comparing efficiency of gene expression among cancer cell lines, GFP expression was similar with cell lines at 10ng transfection, but significantly differed from cell lines at 500ng higher concentration. Additionally, GFP expression level of SKOV3 was showed about 10 fold higher than HepG2, and about 4 fold higher than HCT116 and A549 at 500ng. These results demonstrated that efficiency of gene delivery-complexed with cationic lipid vector was the highest in SKOV3, while HepG2 was showed the lowest efficiency. Taken together, we could determined that efficiency of gene delivery into cells differed from each human cancer cell lines. Our study suggest that cellular properties should be considered in gene delivery-complexed with cationic lipid vector to improve cellular expression efficiency of gene.

Å°¿öµå

Cationic lipid; Gene delivery; GFP; Human cancer cell lines

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