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Àΰ£ ¹è¾ÆÁٱ⼼Æ÷·ÎºÎÅÍ ºÐÈ­µÈ ¼¼Æ÷¿¡¼­ MACS ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© ºÐ¸®ÇÑ ¼¼Æ÷ÀÇ Æ¯¼º¿¡ ´ëÇÑ ¿¬±¸ Characterization of MACS Isolated Cells from Differentiated Human ES Cells

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Á¶Àç¿ø ( Cho Jae-Won ) 
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ÀÓõ±Ô ( Lim Chun-Kyu ) 
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½Å¹Ì¶ó ( Shin Mi-Ra ) 
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¹æ°æÈñ ( Bang Kyoung-Hee ) 
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±Ã¹Ì°æ ( Koong Mi-Kyoung ) 
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ÀüÁøÇö ( Jun Jin-Hyun ) 
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Abstract

¸ñ Àû: Àΰ£ ¹è¾ÆÁٱ⼼Æ÷´Â Àç»ý ÀÇÇÐÀ̳ª Á¶Á÷°øÇп¡ À־ Å« ÀáÀçÀûÀÎ ´É·ÂÀ» °¡Áö°í ÀÖ´Â °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù. À̵éÀº ´Ù¾çÇÑ growth factors 󸮳ª À¯ÀüÀÚ ¹ßÇöÀ» º¯È­½ÃÄÑ Æ¯Á¤ ¼¼Æ÷·Î À¯µµ ºÐÈ­ ¹× ºÐ¸®°¡ °¡´ÉÇÏÁö¸¸ ±× È¿À²¼ºÀº ¾ÆÁ÷±îÁö ³·Àº »óÅÂÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â Àΰ£ ¹è¾ÆÁٱ⼼Æ÷·ÎºÎÅÍ ºñƯÀÌÀûÀ¸·Î ºÐÈ­µÈ ¼¼Æ÷µéÀ» ƯÁ¤ ¼¼Æ÷ Ç¥¸é Ç×ü¸¦ ÀÌ¿ëÇÑ magnetic activated cell sorting (MACS) ¹æ¹ýÀ¸·Î ºÐ¸®, ¹è¾çÇÏ¿© ±×µéÀÇ Æ¯¼ºÀ» »ìÆ캸¾Ò´Ù.

¿¬±¸¹æ¹ý: ¹ÌºÐÈ­ ¹è¾ÆÁٱ⼼Æ÷ÁÖ (Miz-hESC4)¸¦ ¹°¸®ÀûÀÎ ¹æ¹ýÀ¸·Î °è´ë ¹è¾çÇÏ¿´À¸¸ç, ºÎÀ¯ ¹è¾ç¹ýÀ¸·Î ¹è¾Æü Çü¼ºÀ» À¯µµÇÏ¿´´Ù. ¹è¾ÆüÀÇ ÀÚ¹ßÀûÀÎ ºÐÈ­¸¦ À§ÇØ DMEM¿¡ 10% FBS¸¦ ÷°¡ÇÏ¿© 2ÁÖ µ¿¾È ¹è¾çÇÏ¿´´Ù. ÀÌ·¸°Ô ºÐÈ­µÈ ¼¼Æ÷µéÀ» CD34, human epithelial antigen (HEA),human fibroblast (HFB)¿¡ ´ëÇÑ Ç×ü¸¦ ÀÌ¿ëÇÑ MACS systemÀ¸·Î °¢°¢ÀÇ Ç×ü¿¡ ´ëÇÑ ¾ç¼º ¶Ç´Â À½¼º ¼¼Æ÷¸¦ ºÐ¸®ÇÏ¿´´Ù. ÀÌ·¯ÇÑ MACS ºÐ¸® ¼¼Æ÷¸¦ 4ÁÖ µ¿¾È ¹è¾çÇϸ鼭 ÇüÅÂÀûÀÎ º¯È­¸¦ °üÂûÇÏ°í ƯÀÌ À¯ÀüÀÚÀÇ ¹ßÇö ¾ç»óÀ» ºÐ¼®ÇÏ¿´´Ù.

°á °ú: ºÐ¸® ¹è¾çÇÑ CD34 ¾ç¼º ¼¼Æ÷µéÀº ¹è¾ç Ãʱ⿡´Â µÕ±Ù ÇüŸ¦ ³ªÅ¸³»´Ù°¡ ¹è¾ç Èı⿡´Â ÀÛÀº ´Ù°¢ÇüÀÇ ÇüÅ·Π°üÂûµÇ¾úÀ¸¸ç, HEA ¾ç¼º ¼¼Æ÷µéÀº Å« ´Ù°¢ÇüÀÇ ÇüŸ¦ ³ªÅ¸³»¾ú°í,HFB ¾ç¼º ¼¼Æ÷µéÀº ÀüÇüÀûÀÎ ¹æÃßü ÇüÅ·Π°üÂûµÇ¾ú´Ù. ƯÀÌ À¯ÀüÀÚ¿¡ ´ëÇÑ RT-PCR °á°ú¿¡¼­,
CD34 ¾ç¼º ¼¼Æ÷µé°ú HFB ¾ç¼º ¼¼Æ÷µé¿¡¼­´Â ³»¹è¿±°ú Á߹迱 °ü·Ã À¯ÀüÀÚÀÇ ¹ßÇöÇÏ´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú°í, HEA ¾ç¼º ¼¼Æ÷µé¿¡¼­´Â ¿Ü¹è¿± °ü·Ã À¯ÀüÀÚÀÎ NESTIN°ú NF68KDÀÇ ¹ßÇöÀ» °üÂûÇÒ ¼ö ÀÖ¾ú´Ù. ¹è¾ç±â°£ÀÌ °æ°úÇÔ¿¡ µû¶ó CD34 ¾ç¼º ¼¼Æ÷ÀÇ Æ¯ÀÌ À¯ÀüÀÚ ¹ßÇö ¾ç»óÀÌ º¯È­µÇ¾ú´Ù.

°á ·Ð: ÀÌ»óÀÇ °á°ú´Â ºñƯÀÌÀûÀ¸·Î ºÐÈ­µÈ Àΰ£ ¹è¾ÆÁٱ⼼Æ÷·ÎºÎÅÍ Æ¯ÀÌ ¼¼Æ÷¸¦ MACS ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© ¼º°øÀûÀ¸·Î ºÐ¸®ÇÒ ¼ö ÀÖÀ½À» º¸¿©ÁÖ¾ú´Ù. µû¶ó¼­, MACS ¹æ¹ý°ú ƯÀÌ ¼¼Æ÷¿¡ ´ëÇÑ Ç×ü´Â Àΰ£ ¹è¾ÆÁٱ⼼Æ÷ÀÇ À¯µµ ºÐÈ­¿Í ƯÀÌ ¼¼Æ÷ÀÇ ºÐ¸®¿¡ ¸Å¿ì À¯¿ëÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù.

Objective: Human embryonic stem (ES) cells have a great potential in regenerative medicine and tissue engineering. The human ES cells could be differentiated into specific cell types by treatments of growth factors and alterations of gene expressions. However, the efficacy of guided differentiation and isolation of specific cells are still low. In this study,we characterized isolated cells from differentiated human ES cells by magnetic activated cell sorting (MACS) system using specific antibodies to cell surface markers.

Methods: The undifferentiated hES cells (Miz-hESC4) were sub-cultured by mechanical isolation of colonies and embryoid bodies were spontaneously differentiated with DMEM containing 10% FBS for 2 weeks. The differentiated cells were isolated to positive and negative cells with MACS system using CD34, human epithelial antigen (HEA) and human fibroblast (HFB) antibodies, respectively. Observation of morphological changes and analysis of marker genes expression were performed during further culture of MACS isolated cells for 4 weeks.

Results: Morphology of the CD34 positive cells was firstly round, and then it was changed to small polygonal shape after further culture. The HEA positive cells showed large polygonal, and the HFB positive spindle shape. In RT-PCR analysis of marker genes, the CD34 and HFB positive cells expressed endodermal and mesodermal genes, and HEA positive cells expressed ectodermal genes such as NESTIN and NF68KD. The marker genes expression pattern of CD34 positive cells changed during the extension of culture time.

Conclusion: Our results showed the possibility of successful isolation of specific cells by MACS system from undirected differentiated human ES cells. Thus, MACS system and marker antibodies for specific cell types might be useful for guided differentiation and isolation of specific cells from human ES cells.

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Àΰ£ ¹è¾ÆÁٱ⼼Æ÷;ºÐÈ­;MACS ¹æ¹ý;Ç×ü
Human embryonic stem cells; Differentiation; MACS system; Antibody

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