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Á¦°¡ À̹ø¿¡ ¹ßÇ¥ÇÒ ³í¹®Àº 2021³â Journal of Experimental Medicine¿¡ ÃâÆǵÈ
‘Intercrypt sentinel macrophages tune antibacterial NF-κB responses in gut epithelial cells via TNF'ÀÔ´Ï´Ù.
Intestinal epithelial cell (IEC)ÀÇ NF-κB ½ÅÈ£Àü´ÞÀº mucosal homeostasis¿Í inflammation ¹ÝÀÀÀÇ ±ÕÇüÀ» À¯ÁöÇÏ´Â ¿ªÇÒÀ» ÇÕ´Ï´Ù. º» ¿¬±¸¿¡¼´Â LPS¿¡ ÀÇÇØ NF-κB ½ÅÈ£Àü´ÞÀÌ Á¶ÀýµÇ´Â ±âÀü Áß Çϳª·Î macrophage-TNF-IEC axis¸¦ Á¦½ÃÇØ IECÀÇ NF-κB ½ÅÈ£Àü´ÞÀÌ intercrypt macrophages°¡ »ý¼ºÇÏ´Â TNF¸¦ ÅëÇØ ¸Å°³µÊÀ» ¹àÇû½À´Ï´Ù.
¸ÕÀú, LPS¿¡ ÀÇÇÑ NF-κB È°¼ºÈ°¡ IECÀÇ TLR4¸¦ ÅëÇØ Á÷Á¢ ¸Å°³µÇÁö ¾ÊÀ» ¼ö ÀÖ´Ù´Â °¡´É¼ºÀ», ÀϺΠTLR4-proficient cells¿¡ ÀÇÇØ NF-κB È°¼ºÈ°¡ ÀϾÁö ¾ÊÀº °ÍÀ» ÅëÇØ È®ÀÎÇß½À´Ï´Ù. Ãß°¡·Î, local epithelial NF-κB È°¼ºÈ°¡ CD11c cells¸¦ ÅëÇØ ÀϾ´Â °ÍÀ» È®ÀÎÇϸç ÇØ´ç °úÁ¤¿¡ CD11c cellsÀÌ °ü¿©ÇÔÀ» ¹àÇû½À´Ï´Ù.
¶ÇÇÑ, NF-κB È°¼ºÈ¿Í °ü·ÃÇÑ cytokines Áß¿¡¼µµ TNF°¡ Áß¿äÇÏ°Ô ÀÛ¿ëÇÔÀ» È®ÀÎÇß°í, TNF-proficient cells¿¡¼ CD11c cells °áÇÌ ½Ã¿¡ NF-κB È°¼ºÈ°¡ ÀϾÁö ¾ÊÀ½À» ÅëÇØ CD11c cellsÀÌ ºÐºñÇÏ´Â TNF°¡ NF-κB È°¼ºÈ¿¡ ±â¿©ÇÔÀ» È®ÀÎÇß½À´Ï´Ù. TNF producing CD11c cells Áß¿¡¼µµ Ãß°¡ÀûÀÎ surface molecues¸¦ ÀÌ¿ëÇØ macrophages·Î ¹üÀ§¸¦ Á¦ÇÑÇß°í macrophages°¡ TNF ºÐºñ¸¦ ÅëÇØ IEC¿¡ Á¦ÇÑÀûÀ¸·Î NF-κB activationÀ» À¯µµÇÔÀ» È®ÀÎÇß½À´Ï´Ù.
¸¶Áö¸·À¸·Î, Salmonella Typhimurium infection ½Ã¿¡µµ À§¿Í µ¿ÀÏÇÑ °á°ú¸¦ È®ÀÎÇß½À´Ï´Ù. ±×¸®°í TNF°¡ C3¿Í °°Àº host defense effectors »ý¼º¿¡µµ °ü¿©ÇÔÀ» È®ÀÎÇϸç IECÀÇ NF-κB È°¼ºÈ¿¡ ÀÖ¾î macrophage-TNF-IEC axisÀÇ ¿ªÇÒÀ» ¹àÇû½À´Ï´Ù.
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https://rupress.org/jem/article/218/11/e20210862/212646/Intercrypt-sentinel-macrophages-tune-antibacterial