ÇϹöµå¿Í MITÀÇ ³ÐÀº ÇÐȸ¿¡°Ô¼­ ¿¬±¸¿øÀÇ ÆÀÀÌ 1 Â÷·Î °£ÇàÇÏ´Â ¹Ì·¡ Àç»ýÇÏ´Â Ä¡·á¸¦ À§ÇÑ ÀáÀçÀûÀÎ ¿¬·ç¿Í ´õºÒ¾î ¹Ì¹ß´Þ ÁÙ±â (ES) ¼¼Æ÷ °¨º°¹ý¿¡ º¸°í.

ÀÎü¿¡ ÀÖ´Â °¢ ¼¼Æ÷´Â µ¿ÀÏÇÑ À¯ÀüÀÚ¸¦ Æ÷ÇÔÇÑ´Ù, ±×·¯³ª Á÷¹°ÀÇ Æ¯Á¤ÇÑ À¯Çü¿¡ ÀÖ´Â ¼¼Æ÷¿¡´Â Ȱ¼ºÈ­µÈ Àú Á÷¹° À¯Çü°ú¼­¸¸ °ü·ÃµÇ¾ú´ø ÁÖµÈ ±ÔÁ¤ÇÏ´Â À¯ÀüÀÚ°¡ ÀÖ°í ±º´ë¸¦ ÇØ»êÇÑ ´Ù¸¥ ÁÖµÈ ±ÔÁ¤ÇÏ´Â À¯ÀüÀÚ°¡ ÀÖÀ» °ÍÀÌ´Ù. ES ¼¼Æ÷´Â 󸮰¡ ¿¬±¸¿¡¼­ ¹ßÀüµÉ °ÍÀÎ °æ¿ì¿¡ Á÷¹° ¼¼Æ÷ÀÇ ´Ù¸¥ ¾î¶² À¯ÇüÀÌ µÇ´Â °¡´É¼ºÀ¸·Î °¡Áö°íÀÖ°í, ±×·¯³ª ±×·¡¼­ ¹æ¹ý ¸íÈ®ÇÏÁö ¾Ê°í ±Ùº»ÀûÀÌ´Ù.

ÁÖµÈ ±ÔÁ¤ÇÏ´Â À¯ÀüÀÚ È°¼ºÈ­ÀÇ ÀÌ °úÁ¤Àº chromatin, ¼¼Æ÷ÀÇ DNA¸¦ Æ÷ÇÔÇÏ´Â È÷½ºÅæ ´Ü¹éÁú ±¸Á¶¿¡ ÀÇÇØ ÃËÁøµÈ´Ù. ¸¸¾à¿¡ 1°³ÀÇ È÷½ºÅæ ´Ü¹éÁú¿¡ ƯÁ¤ Àå¼Ò¿¡¼­ Á¤¹ÚµÈ ¸ÞÆ¿ ±×·ìÀÌ ÀÖÀ¸¸é, °¡±îÀÌ¿¡ À¯ÀüÀڴ Ȱ¼ºÈ­µÈ´Ù (¾Ë°í ÀÖ´Â K4 ±¹°¡). ¸ÞÆ¿ ±×·ìÀÌ ´Ü¹éÁúÀÇ ´Ù¸¥ ºÎºÐ¿¡ ºÙÀÌ´Â °æ¿ì¿¡ ¿ªÀ¸·Î, À¯ÀüÀÚ´Â ±º´ë¸¦ ÇØ»êÇÑ´Ù (¾Ë°í ÀÖ´Â K27 ±¹°¡).

"¿ì¸®°¡ ã¾Æ³½ ¹«¾ù [Áã ES ¼¼Æ÷] ´Ù¸¥ ¼¼Æ÷¿¡´Â ÀÖ ±×µé K4°¡ µÑ ´Ù ¾ø´Â ¿ì¸®°¡ »ý°¢Ç߱⠶§¹®¿¡ ÀÇ¿Ü À̰í K27 ¼­¸í, »óÈ£ ¹èŸÀû ÀÎ chromatin ¼­¸íÀÌ," ¸»Çß´Ù´Â °ÍÀ» ºê·¹µé¸® E.¸¦ ÀÖÀ¸½Ê½Ã¿À ÀÎÁö. , Bernstein Çй®ÀÇ ¸Å»çÃß¼¼Ã÷ Á¾ÇÕ º´¿ø ¹× ÇϹöµå Àǰú ´ëÇÐ ¹× ¼ö¼® ÀúÀÚ¿¡ º´¸®ÀÇ Á¶±³¼ö.

"À¯ÀüÀÚ, À̰ÍÀ» À§ÇØ ¹æ¾Æ¼è¿¡ 1°³ÀÇ ¼Õ°¡¶ô È޽İú µ¿µîÇÏ´Ù," ½ºÆ©¾îÆ® L.¸¦ ¸»Çß´Ù. È­Çаú È­ÇÐÁ¦Ç° »ý¹°ÇÐÀÇ ºÎÀÇ Schreiber, Loeb ±³¼ö ¹× ÀÇÀÚ¿Í °è»ê¼­¿¡¼­ Çй®ÀÇ ÀúÀÚ.

"°¡Àå ÇÊ¿äÇÒ."´Â ¾ðÁ¦ ÀÌ Á¢±Ù, ±×·¯³ª¸¦ À§ÇØ ³ú°üÀ» ´Þ¾Æ °áÁ¤ÀûÀÎ À¯ÀüÀÚ Á¶¿ëÇß´ø À¯Áö¸¦ À§ÇÑ Áß¿äÇÑ Àü·«ÀÏ ¼ö ÀÖ¾ú´Ù

ES ¼¼Æ÷´Â ¾î¶»°Ô ºÐÈ­ÇÏ´ÂÁö ¹ß°ßÀº ±×´ë·Î ¼³¸íÇÏÁö ¾Ê´Â µ¿¾È, ÀÌ °úÁ¤À» ÀεµÇÒÁöµµ ¸ð¸¥ ±â°èÀåÄ¡¸¦ ÈùÆ®¸¦ Á¦°øÇÑ´Ù.

´õ¿í, ÀÌ "À̰¡ chromatin ±¸Á¶"ÀÇ ¹ß°ß¿¡´Â Áٱ⠼¼Æ÷ ¾à À̿ܿ¡ ºÐÁö¸¦ À§ÇÑ Áß¿äÇÑ ¿¬·ç°¡ ¶ÇÇÑ ÀÖÀ»Áöµµ ¸ð¸¥´Ù.

¡°I think that understanding how these sorts of bivalent structures contribute to the unique potential of these kind of cells has important implications not only for stem cell biology and regenerative medicine, but for cancer and other diseases where chromatin misregulation or deregulation is involved,¡± Bernstein said.

Link


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