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Á¦°¡ À̹øÁÖ ¹ßÇ¥ÇÏ°Ô µÉ ³í¹®Àº 2020³â Science ImmunologyÀú³Î¿¡ °ÔÀçµÈ "Shiga toxin suppresses noncanonical inflammasome responses to cytosolic LPS"ÀÔ´Ï´Ù.

TLRÀ» ÅëÇÑ LPSÀÇ ÀνÄÀº caspase-1 activatioÀ» À¯µµÇϸç ÀÌ´Â IL-1b¿Í °°Àº ¹°ÁúÀ» ºÐºñÇÏ´Â canonical inflammasomeÀ» Çü¼ºÇÕ´Ï´Ù. ¶ÇÇÑ cytosol·Î LPS°¡ tranfectionµÇ¸é caspase-11 activationÀ» ÅëÇØ noncacnonical inflammasome activationÀÌ À¯µµµÇ¾î Gasdermin D activationÀÌ µÇ¾ú½À´Ï´Ù. ÀÌ´Â pyroptosis¸¦ À¯µµÇÏ¸ç ¿ÜºÎ ¹°Áú¿¡ ´ëÇÑ ¹æ¾î ±âÀÛ¿¡¼­ Áß¿äÇÑ ¿ªÇÒÀ» ÇÑ´Ù°í ¾Ë·ÁÁ® ÀÖ½À´Ï´Ù.

ÀÌ ¿¬±¸¿¡¼­´Â shiga toxinÀÌ noncanonical inflammasomeÀÇ Çü¼ºÀ» ¾ïÁ¦ÇÏ¿© °á°úÀûÀ¸·Î IL-1bÀÇ »ý¼º ¾ïÁ¦ caspase-1 activation ¾ïÁ¦, pyroptosis ¾ïÁ¦¸¦ À¯µµÇÑ´Ù´Â °ÍÀ» ¹àÇô³»¾ú½À´Ï´Ù. ÇÏÁö¸¸ ´Ù¾çÇÑ ½ÇÇè¿¡µµ ºÒ±¸ÇÏ°í Stx°¡ ¾î¶°ÇÑ °úÁ¤¿¡¼­ ÀÌ·¯ÇÑ ÀÛ¿ëÀ» ÇÏ´ÂÁö¿¡ ´ëÇÑ °ÍÀº ¹àÇô³»Áö ¸øÇÏ¿´½À´Ï´Ù. ´Ù¸¸ ¿¬±¸ÁøµéÀº ¾Æ¸¶ gastermin DÀÇ C-terminal domain¿¡ ¿µÇâÀ» ¹ÌÃÄ ÀÌ·¯ÇÑ ÀÛ¿ëÀ» ¹æÇØÇÒ ¼ö ÀÖÀ» °ÍÀ̶ó°í ¿¹»óÇÏ¿´½À´Ï´Ù.

Á¦°¡ ÇöÀç °ü½ÉÀÖ¾îÇÏ´Â Avian pathogenic E .coli(APEC)µµ macrophage ³»¿¡¼­ resistance¸¦ °¡Áø´Ù°í ¾Ë·ÁÁ® ÀÖÁö¸¸ APECµµ ºÐºñÇÑ´Ù°í ¾Ë·ÁÁø Shiga toxinÀÌ macrophage³»¿¡¼­ÀÇ »ýÁ¸¿¡ ¿µÇâÀ» ¹ÌÄ¥ ¼ö ÀÖÀ¸¸ç, ÀÌ´Â ±âÁ¸¿¡ ¾Ë·ÁÁø APECÀÇ Àå ¿ÜºÎ·ÎÀÇ tranlocation¿¡ ¿µÇâÀ» ¹ÌÄ¥ ¼ö Àִ ÇÑ°¡Áö ¿äÀο¡ ´ëÇØ ´õ ¾Ë ¼ö ÀÖ´Â ±âȸ°¡ µÇ¾ú½À´Ï´Ù.

¿­½ÉÈ÷ ¹ßÇ¥ ÁغñÇϵµ·Ï ÇÏ°Ú½À´Ï´Ù.

³í¹® ¸µÅ©: https://www.science.org/doi/10.1126/sciimmunol.abc0217
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