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Çѱ¹°úÇбâ¼ú¿ø(KAIST)´Â »ý¸í°úÇаú ±èű¹(ÑÑ÷ÁÏÐ, 42) ±³¼öÆÀÀÌ ¾¾ÁöÄÉÀÌ(ÁÖ)(CGK, ´ëÇ¥ÀÌ»ç ±èÁøȯ)¿Í °øµ¿À¸·Î ¿¬±¸°³¹ßÇÑ »õ·Î¿î Àΰ£ ³ëȾïÁ¦ ½Å¾àÈĺ¸¹°ÁúÀÌ ³×ÀÌó ÄɹÌÄùÙÀ̿÷ÎÁö ¿Â¶óÀÎ(Advanced Online Publication)ÆÇ 12ÀÏ(¿ù)(º»ÆÇÀº 7¿ù 1ÀÏÀÚ ¹ßÇ¥)ÀÚ¿¡ ¹ßÇ¥µÈ´Ù. ¶ÇÇÑ ½Å¾àÈĺ¸¹°ÁúÀ» °³¹ßÇÑ ÀÚ¼¼ÇÑ ¹æ¹ý·ÐÀº ³×ÀÌó ÇÁ·ÎÅäÄÝÁö¿¡ ¹ßÇ¥µÈ´Ù.
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Scientists have found a small molecule that can be used to extend the lifespan of mammalian cells. The research reported in the July issue of Nature Chemical Biology showed that the synthetic organic molecule CGK733 blocks the machinery that senses DNA damage. All cells face an inevitable death as they age. On this path, cells may become senescent, where they stay alive but stop dividing. In looking for chemicals that can help cells beat senescence, Tae Kook Kim and colleagues screened a library of synthetic compounds for those that could stimulate growth and other visual signs they could help cells overcome this state. They found that CGK733 could extend the lifetime of cultured cells by about 20 doublings and could actually rescue cells that were already senescent. To do this, CGK733 blocks the checkpoint involved in sensing and slowing down cells in response to DNA damage. By blocking a natural event that leads to senescence, CGK733 confers life-saving and life-extending properties on mammalian cells.
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KAIST ±èű¹ ±³¼öÆÀÀº ÀÚµ¿È À̹Ì¡À» ÀÌ¿ëÇÑ °íÈ¿À² ½ºÅ©¸®´×À» ÅëÇØ Àΰ£¼¼Æ÷ÀÇ ³ëȸ¦ Á¶Àý, ¼¼Æ÷ÀÇ ¼ö¸íÀ» Å©°Ô ¿¬Àå½Ãų ¼ö ÀÖ´Â ¹°ÁúÀ» ¹ß°ßÇÏ¿´°í, CGK733À̶ó ¸í¸íÇß´Ù. ÀÌ¹Ì ³ëÈµÈ Àΰ£¼¼Æ÷¿¡ CGK733À» °¡ÇØÁÖ¸é ºÐ¿À» ¸ØÃß¾ú´ø ³ëÈ ¼¼Æ÷°¡ ºÐ¿À» Àç°³ÇÏ°í, ¼¼Æ÷ÀÇ ¸ð¾ç ¶ÇÇÑ Á¤»óÀûÀÎ ÀþÀº ¼¼Æ÷·Î º¯ÈµÆ´Ù.
ÀÌ »óÅ¿¡¼ CGK733À» Á¦°ÅÇØÁÖ¸é ¼¼Æ÷´Â ´Ù½Ã ³ëÈ¿¡ µé¾î°¨À» º¸¿´°í, ÀÌÈÄ CGK733À» °¡ÇØÁÖ¸é ¶Ç´Ù½Ã ³ëÈ ¼¼Æ÷°¡ ÀþÀº ¼¼Æ÷¿Í °°ÀÌ ÀüȯµÊÀ» °üÂûÇÔÀ¸·Î½á CGK733ÀÌ ³ëÈ¿Í °ü·ÃµÈ ¼¼Æ÷ ÇÁ·Î±×·¥À» °¡¿ªÀûÀ¸·Î ÀÓÀÇ·Î Á¶ÀýÇÔÀ» ±Ô¸íÇß´Ù.
ƯÈ÷ ÐÝ ±³¼ö ¿¬±¸ÆÀÀÌ ÃÖ±Ù °³¹ßÇÑ ¸ÅÁ÷(MAGIC: MAGnetism-based Interaction Capture) ±â¼úÀ» È°¿ëÇÏ¿© CGK733ÀÌ »ì¾Æ ÀÖ´Â Àΰ£¼¼Æ÷ ³»¿¡¼ ATM(ataxia telangiectasia mutated)À̶ó´Â Áúº´´Ü¹éÁú°ú °áÇÕÇÔÀ¸·Î¼ ³ëÈÀÛ¿ëÀ» Á¶ÀýÇÔÀ» ±Ô¸íÇß´Ù. ÀÌ ¿¬±¸°³¹ßÀº CGK733 Áß½ÉÀ¸·Î ÇÑ ÈÇÕ¹°À» ÀÌ¿ëÇؼ ³ëÈ Á¶Àý°ú Ä¡¸Å µî ³ëÈ°ü·Ã Áúº´Ä¡À¯ÀÇ °¡´É¼ºÀ» ½Ã»çÇÑ´Ù.
³×ÀÌó ÄɹÌÄùÙÀ̿÷ÎÁö¿¡´Â Ä¿¹ö½ºÅ丮·Î ¡°¼¼Æ÷ÀÇ ³ëÈ°úÁ¤À» °¡¿ªÀûÀ¸·Î ÀçÇÁ·Î±×·¡¹ÖÇÒ ¼ö ÀÖ´Â Á¶Àý¹°Áú °³¹ß(Small Molecule-based Reversible Reprogramming of Cellular Lifespan)¡± À̶ó´Â Á¦¸ñÀ¸·Î ¹ßÇ¥µÈ´Ù. ±×¸®°í ³×ÀÌó ÇÁ·ÎÅäÄÝÁö¿¡´Â ¡°ÀÚµ¿ÈµÈ °íÈ¿À² À̹Ì¡½Ã½ºÅÛÀ» ÅëÇÑ ³ëȾïÁ¦ ½Å¾àÈĺ¸¹°ÁúÀÇ ½ºÅ©¸®´×-°³¹ß ¹æ¹ý(Automated Imaging-based High-throughput Screening for Small Molecules that Reverse Cellular Senescence)¡± À̶ó´Â Á¦¸ñÀ¸·Î ¹ßÇ¥µÈ´Ù.
ƯÈ÷ ÐÝ ±³¼öÆÀÀº Áö³ ÇØ 7¿ù 1ÀÏ ¾¾ÁöÄÉÀÌ(ÁÖ)(CGK, ´ëÇ¥ÀÌ»ç ±èÁøȯ)¿Í °øµ¿À¸·Î °³¹ßÇÑ Çõ½ÅÀûÀÎ ½Å¾à°³¹ß Çٽɿøõ±â¼úÀ» ¡°»ì¾Æ ÀÖ´Â ¼¼Æ÷³»¿¡¼ ºÐÀÚ°£ »óÈ£ÀÛ¿ëÀ» ¶óÀ̺ê·Î °ËÃâÇÏ´Â ÀÚ¼º ³ª³ëÇÁ·Îºê ±â¼ú(A Magnetic Nanoprobe Technology for Detecting Molecular Interactions in Live Cells)¡±À̶ó´Â Á¦¸ñÀ¸·Î »çÀ̾𽺠ò¼¿¡ ¹ßÇ¥Çß¾ú´Ù. ¸¶Ä¡ ¸¶¼ú°°ÀÌ »ì¾ÆÀÖ´Â Àΰ£¼¼Æ÷³»¸¦ ÈÍÈ÷ µé¿©´Ù º¼ ¼ö ÀÖ´Â ¸ÅÁ÷(MAGIC: MAGnetism-based Interaction Capture)À̶ó°í ¸í¸íµÈ ÀÌ ³ª³ë-¹ÙÀÌ¿À ½Å±â¼úÀ» ½ÇÁö·Î ÀÌ¿ëÇؼ ¿ª»çÀûÀ¸·Î °³¹ßÇϱ⠸ſì Èûµé¾ú´ø Àΰ£ ³ëȾïÁ¦ ½Å¾àÈĺ¸¹°ÁúÀ» 1³â¿© ¸¸¿¡ °³¹ß¿¡ ¼º°øÇß´Ù.
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