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'Bile acids modified by the intestinal microbiota promote colorectal cancer growth by suppressing CD8+ T cell effector functions'ÀÔ´Ï´Ù. 
 
À§ ³í¹®Àº Àå³»¹Ì»ý¹° À¯·¡ metabolite¸¦ ½ºÅ©¸®´×ÇÏ°í ±× Áß ÇϳªÀΠDeoxycholic acid(DCA)°¡ CD8 T cell¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» °ËÁõÇÑ ³í¹®ÀÔ´Ï´Ù

¿ì¼± CRC È¯ÀÚ¿¡°Ô¼­ ºñÁ¤»óÀûÀ¸·Î 2Â÷ ´ãÁó»êÀΠDCA°¡ ³ô¾ÆÁ®ÀÖÁö¸¸±×·Î ÀÎÇÑ °á°úµéÀº È®ÀεÇÁö ¾ÊÀº »óÅ¿´½À´Ï´Ù

°á°úÀûÀ¸·Î CRC È¯Àڵ鿡°Ô¼­ DCAÀÇ ³óµµ¿Í CD8 T cellÀÇ ±â´ÉÀÌ negatively correlationÀÓÀ» È®ÀÎÇÏ¿´°í±â´É ¾ïÁ¦ÀÇ ±âÀüÀ¸·Î´Â DCA°¡ plasma membrane Ca2+ ATPase(PMCA)¸¦ Ç¥ÀûÀ¸·Î ÇÏ¿© Ca2+-NFAT2¸¦ ¾ïÁ¦ÇÔÀ¸·Î½á °¡´ÉÇÔÀ» È®ÀÎÇÏ¿´½À´Ï´Ù

´õ ³ª¾Æ°¡, DCA »ýÇÕ¼º À¯ÀüÀÚ¸¦ º¸À¯ÇÑ ¹ÚÅ׸®¾Æ´Â CD8 T cellÀÇ ±â´ÉÀ» ¾ïÁ¦½ÃÅ°°í ¸¶¿ì½º¿¡¼­ Á¾¾ç ¼ºÀåÀ» ÃËÁø½ÃÄ×À¸¸ç, ÀÌ È¿°ú´Â ´ãÁó»ê Å³·¹ÀÌƮȭ¹ÚÅ׸®¾Æ DCA »ýÇÕ¼º °úÁ¤ÀÇ À¯ÀüÀû °áÇÔ ±×¸®°í ¹ÚÅ׸®¿ÀÆÄÁö¸¦ ÀÌ¿ëÇÑ Å¸°Ù ¹ÚÅ׸®¾Æ Á¦°Å µîÀ» ÅëÇØ Á¦°ÅÇÒ ¼ö ÀÖÀ½À» È®ÀÎÇÏ¿´½À´Ï´Ù

°á·ÐÀûÀ¸·ÎÇش翬±¸´Â CRC¿¡¼­ ¹Ì»ý¹° À¯·¡ DCA ´ë»ç¿Í Ç×Á¾¾ç CD8 T cell function°£ÀÇ °ü°è¸¦ ÀÔÁõÇÏ¿© Ç×Á¾¾ç Ä¡·á¿¡ ´ëÇÑ ÀáÀçÀûÀÎ Ä¡·á¹ýÀ» Á¦½ÃÇÔ¿¡ ÀÇÀÇ°¡ ÀÖ¾ú½À´Ï´Ù

ÇØ´ç ³í¹®Àº metabolite-CD8 T cell °ü·ÃÇÏ¿© È帧À» °øºÎÇÏ°íÀÚ Àоú¾ú´Âµ¥¿ÀÈ÷·Á ¹ÚÅ׸®¾Æ ºÎºÐÀÇ ³í¸®¸¦ Ç®¾î³ª°¡´Â ¹æ¹ý¿¡¼­ ´Ù¾çÇÑ ½Ã°¢À» ¾ò°Ô µÇ¾ú½À´Ï´Ù.

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