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Autophagy¿¡ ÃâÆÇµÈ '
Autophagic protein ATG5 controls antiviral immunity via glycolytic reprogramming of dendritic cells against respiratory syncytial virus infection'ÀÔ´Ï´Ù.
ÁøÇÙ»ý¹°¿¡¼ Macroautophagy/autophagy´Â cytoplasmic substrates µîÀ» ¼ö¼ÛÇÏ¿© lysosomeÀ¸·Î ¼ö¼ÛÇÏ¿© autolysosomeÀ» Çü¼ºÇÏ°í, ÀÌ·¯ÇÑ substrate µîÀ» lysosomal degradationÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ½À´Ï´Ù.
ÀÌ·¯ÇÑ autophagy´Â RSV infection »óȲ¿¡¼ ¹ßÇöÀÌ Áõ°¡Çϸç, ÀÌ´Â RSVÀÇ replication¿¡ °ü¿©ÇÑ´Ù°í ¾Ë·ÁÁ® ÀÖ½À´Ï´Ù.
ÀÌ¿¡ º» ¿¬±¸ÆÀÀº dendritic cellÀÌ RSV¿¡ °¨¿°µÈ »óȲ¿¡¼ autophagy related proteinÀÎ ATG5ÀÇ ¿ªÇÒÀ» ±Ô¸íÇÏ°í atg5ÀÇ deletionÀ¸·Î ÀÎÇÑ metabolic reprogramming¿¡ ´ëÇؼµµ ¹àÈ÷°íÀÚ ÇÏ¿´½À´Ï´Ù.
¿ì¼± dendritic cell specific atg5 deletion systemÀ» »ç¿ëÇÏ¿© CD8 T cell response¿Í IL6, IFNb µîÀÇ proinflammatory cytokineÀÌ Áõ°¡ÇÑ´Ù´Â °ÍÀ» ¹àÇû½À´Ï´Ù.
ÀÌÈÄ RNA sequencing, transcriptome analysis¸¦ »ç¿ëÇÏ¿© atg5°¡ deletionµÈ dendritic cell¿¡¼ metabolic reprogrammingÀ» È®ÀÎÇÏ¿´°í, ÀÌ·¯ÇÑ metabolic reprogramming Áß glycolysis¿¡ ÁýÁßÇÏ¿´½À´Ï´Ù.
±× °á°ú·Î atg5°¡ deletionµÈ dendritic cellÀº ´õ ³ôÀº glycolysis¿Í glycolytic capacity¸¦ °¡ÁüÀÌ È®ÀεǾúÀ¸¸ç ÀÌ´Â mTOR complex 1ÀÇ signaling pathway¸¦ ÅëÇØ »óÇâ Á¶ÀýµÈ´Ù´Â °ÍÀ» ¹àÇû½À´Ï´Ù.
¶ÇÇÑ in vivo ½ÇÇèÀ» ÅëÇØ atg5ÀÇ deletionÀÌ CD11b positiveÇÑ dendritic cell°ú CD103 postiveÇÑ dendritic cell ¸ðµÎ¿¡¼ MHC class I ºÐÀÚÀÇ ¹ßÇöÀÌ Áõ°¡ÇÏ´Â °ÍÀ» È®ÀÎÇÏ¿´À¸¸ç ÀÌ´Â Áõ°¡ÇÑ Glycolysis¿¡ ÀÇÇÑ °ÍÀÓÀ» ¹àÇû½À´Ï´Ù.
°á°úÀûÀ¸·Î º» ¿¬±¸ÆÀÀº RSV infection »óȲ¿¡¼ ATG5°¡ immunometabolic regulator·Î¼ ÀÛ¿ëÇÑ´Ù´Â °ÍÀ» ¹àÇûÀ¸¸ç, ÀÌ´Â RSV infection¿¡ ´ëÀÀÇÏ´Â »õ·Î¿î Ä¡·á¹æ¹ý¿¡ ±â¿©ÇÒ ¼ö ÀÖÀ» °ÍÀ̶ó°í ½Ã»çÇÏ°í ÀÖ½À´Ï´Ù.
À§ ³í¹®À» °øºÎÇÑ ÀÌÀ¯´Â, ÃÖ±Ù º¸°Çº¹ÁöºÎ °úÁ¦¸¦ ÅëÇØ RSV infection¿¡ ´ëÇؼ ÀÚÁÖ Á¢ÇÏ°Ô µÇ¾ú´Âµ¥, ÀÌ·¯ÇÑ RSV infection »óȲ¿¡ °ü¿©ÇÏ´Â autophagyÀÇ ¿ªÇÒ°ú ÀÌ·¯ÇÑ »óȲ¿¡¼ innate immune cellÀÎ dendritic cellÀÇ metabolic reprogramming¿¡ ´ëÇؼ °øºÎÇϱâ À§ÇØ ¼±Á¤ÇÏ°Ô µÇ¾ú½À´Ï´Ù.
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https://www.tandfonline.com/doi/full/10.1080/15548627.2020.1812218