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Á¦°¡ ¹ßÇ¥ÇÒ ³í¹®Àº 2023³â 10¿ù Nature communication¿¡ ÃâÆÇµÈ “The transcription factor Zeb1 controls homeostasis and function of type 1 conventional dendritic cells” ÀÔ´Ï´Ù.
Dendritic cell (DC)Àº innate immunity¿Í adaptive immunity¸¦ ¿¬°áÇÏ´Â Áß¿äÇÑ ¼¼Æ÷·Î¼, ÁÖ·Î Ç׿øÀ» Æ÷½ÄÇÏ¿© naïve T-cell¿¡°Ô Á¦½ÃÇÏ´Â Àü¹®Ç׿øÁ¦½Ã¼¼Æ÷ÀÔ´Ï´Ù.
ÀÌ·¯ÇÑ DC´Â ¸î °¡Áö subpopulationÀ¸·Î ³ª´µ¸ç ÀÌ´Â Å©°Ô conventional dendritic cell, plasmacytoid dendritic cell, monocyte-derived dendritic cell·Î ±¸ºÐµÇ°í ÀÖ½À´Ï´Ù.
ƯÈ÷ cDC Áß¿¡¼µµ Type 1 conventional dendritic cell (cDC1)Àº ¿ÜºÎ Ç׿ø¿¡ ´ëÇÑ È¿°úÀûÀÎ ±³Â÷Ç׿øÁ¦½Ã (XP)¸¦ ÅëÇؼ CTL response¸¦ À¯µµÇÏ´Â ±â´ÉÀ» °¡Áø ¼¼Æ÷¶ó´Â °ÍÀÌ Àß ¾Ë·ÁÁ® ÀÖÁö¸¸, cDC1ÀÌ homeostasis¸¦ À¯ÁöÇÏ´Â ¹æ¹ý°ú, ÁÖ¿ä ±â´ÉÀÎ XP¸¦ Á¶ÀýÇÏ´Â ÀÎÀڵ鿡 ´ëÇؼ´Â Áö±Ý±îÁöµµ ¿¬±¸°¡ È°¹ßÈ÷ Áö¼ÓµÇ°í ÀÖ½À´Ï´Ù.
ÀÌ¿¡ º» ¿¬±¸ÆÀÀº cDC1/2 subsetÀÇ developmental stage¿¡ °ü¿©ÇÏ°í ÀÖ´Â Àü»çÀÎÀÚÀÎ Zinc-finger E-box binding homeobox (Zeb) family Áß¿¡¼µµ, cDC1ÀÇ development¿¡ °ü¿©ÇÏ°í ÀÖ´Ù°í ¾Ë·ÁÁø Zeb1ÀÇ ±â´ÉÀ» È®ÀÎÇÏ¿´½À´Ï´Ù.
¿ì¼± DC-specific Zeb1 deficiency »óȲ¿¡¼ splenic cDC1ÀÇ populationÀÌ °¨¼ÒÇϸç, Listeria monocytogenes infection model, solid tumor model¿¡¼ ¾Õ¼ °¨¼ÒÇÑ cDC1ÀÌ ¹ÌÄ¡´Â ¿µÇâÀ» Á¶»çÇÏ¿´½À´Ï´Ù.
ƯÈ÷ tumor model ³»¿¡¼ tumor-specific CD8+ T-cellÀÇ populationÀÌ Zeb1 KO mouse¿¡¼ ³·°Ô ³ªÅ¸³ª´Â °ÍÀ» ±â¹ÝÀ¸·Î Zeb1 KO ½Ã cDC1ÀÇ antigen cross-presentationÀÌ °¨¼ÒÇÏ´Â °ÍÀ» È®ÀÎÇÏ¿´½À´Ï´Ù.
ÀÌ·¯ÇÑ Çö»óÀÇ ¸ÞÄ¿´ÏÁòÀ» ÆľÇÇϱâ À§ÇØ RNA-sequencing dataset°ú CUT & Tag sequencing datasetÀ» °áÇÕÇÏ¿© Zeb1ÀÌ Àü»çÀÎÀڷμ °áÇÕÇÏ´Â ÇÁ·Î¸ðÅÍ¿Í ÇØ´ç ¿µ¿ªÀÌ ¾ÏÈ£ÈÇÏ°í ÀÖ´Â geneÀÇ ±â´ÉÀ» ÆľÇÇÏ¿´½À´Ï´Ù.
±× °á°ú·Î Zeb1 deficient cDC1¿¡¼´Â XP¿¡ ÇÊ¿äÇÏ´Ù°í ¾Ë·ÁÁ® ÀÖ´Â Cybb (NOX2-encoding gene)ÀÇ ¹ßÇö·®Àº °¨¼ÒÇÏ°í, ÀÌ¿Í µ¿½Ã¿¡ XPÀÇ negative regulatorÀÎ phago-lysosome fusion, lysosomal degradation¿¡ °ü¿©ÇÏ´Â gene (AP-1 µî)µéÀÇ ¹ßÇö·®Àº Áõ°¡ÇÏ´Â °ÍÀ» È®ÀÎÇÏ¿´½À´Ï´Ù.
¶ÇÇÑ microRNA-sequencing data¿Í DEG data¸¦ ÅëÇؼ Zeb1ÀÌ ºÎÁ·ÇÑ »óȲ¿¡¼ miR-183-96-182 cluster°¡ ¹ßÇöµÇ¾î Cybb(NOX2-encoding gene)ÀÇ Àü»ç¸¦ ¾ïÁ¦ÇÏ´Â °ÍÀ» Ãß°¡ÀûÀ¸·Î È®ÀÎÇÏ¿´½À´Ï´Ù.
ÀÌ¹Ì NADPH oxidase (NOX)¿¡ ÀÇÇؼ Çü¼ºµÇ´Â phagosomal ROS°¡ °úµµÇÑ phagosomal maturationÀÇ ¹æÁö¿Í rupture¸¦ À¯µµÇÏ¿© exogenous antigenÀÌ cytosol·Î À¯ÃâµÇµµ·Ï Çϸç Cross-presentation¿¡ ÀÖ¾î¼ ±àÁ¤ÀûÀÎ ¿ªÇÒÀ» ¼öÇàÇÑ´Ù´Â Á¡À» Åä´ë·Î,
½ÇÁ¦ Zeb1 deficiency¿¡ ÀÇÇؼ °¨¼ÒÇÑ Cybb (NOX2)°¡
1) Phagosomal ROS-dependent rupture & Antigen export ÀÇ °¨¼Ò
2) phago-lysosome fusion Áõ°¡
µîÀ» À¯¹ßÇÏ´Â °ÍÀ» È®ÀÎÇÏ¿´½À´Ï´Ù.
Áï, ÀÌ ³í¹®Àº cDC1ÀÇ homeostasis & function¿¡ ±â¿©ÇÏ´Â Zeb1 Àü»çÀÎÀÚÀÇ ¿ªÇÒ°ú ±â´ÉÀ» ¹àÈù ³í¹®À¸·Î, ´Ù¾çÇÑ Áúº´ ¸ðµ¨À» È°¿ëÇÏ¿© Çö»óÀûÀÎ È®ÀÎÀ» ÇÏ´Â ¹æ½Ä°ú ÀÌ·¯ÇÑ ¸ÞÄ¿´ÏÁòÀ» ¹àÈ÷´Â ´Ù¾çÇÑ ¹æÇ⼺, ±×¸®°í Cross-presentation¿¡ °ü¿©ÇÏ´Â ÀÎÀÚµéÀ» °øºÎÇÒ ¼ö ÀÖ¾î¼ ¼±Á¤ÇÏ°Ô µÇ¾ú½À´Ï´Ù.
³í¹® ¸µÅ©:
https://www.nature.com/articles/s41467-023-42428-7