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12/17 ¹ßÇ¥ ³í¹®ÀÔ´Ï´Ù.
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Á¦°¡ ¼±Á¤ÇÑ ³í¹®Àº 2020³â PNAS ¿¡ ÃâÆǵÈ
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Microbial tryptophan metabolites regulate gut barrier function via the aryl hydrocarbon receptor" ÀÔ´Ï´Ù.

º» ³í¹®Àº Crohn’s disease¿Í ulcerative colitis¸¦ Æ÷ÇÔÇÏ´Â Inflamaatory bowel disease(IBD)´Â gut microbiomÀÇ dysbiosis°ú °ü·ÃÀÌ ÀÖ½À´Ï´Ù.

ÃÖ±Ù ´Ù¾çÇÑ ½ÄÀÌ ¿µ¾ç¼ÒÀÇ bacterialÀÇ ºÐÇØ¿¡¼­ À¯·¡µÈ small-moleculeÀÌ IBDÀÇ inflammationÀ» ¿ÏÈ­ÇÏ´Â °ÍÀ» Æ÷ÇÔÇÏ¿© ´Ù¾çÇÑ ¹æ¸é¿¡¼­ host¿¡°Ô ÀÌÁ¡À» Á¦°øÇÑ´Ù´Â °Í¿¡ ´ëÇÑ ¿¬±¸°¡ ÁøÇàµÇ°í ÀÖ½À´Ï´Ù.

±×·¯³ª, ¸¹Àº °æ¿ì¿¡, ÀÌ·¯ÇÑ molecule¿¡ ÀÇÇØ Ç¥ÀûÀÌ µÇ´Â molecular pathway´Â Àß ¾Ë·ÁÁöÁö ¾Ê°í ÀÖ½À´Ï´Ù.

À§ ³í¹®Àº gut barrier functionÀ» Á¶ÀýÇÏ´Â µ¥ Çʼö ¾Æ¹Ì³ë»ê trytophanÀÇ gut bacteiral metabolite¿¡¼­ À¯·¡ÇÑ indole-3-aldehyde, indole-3-pyruvate ¹× indole-3-ethanolÀÇ ¼¼ °¡Áö metabolite¿¡ ´ëÇÑ ¿ªÇÒÀ» Á¦½ÃÇÏ°í ÀÖ½À´Ï´Ù.

ÀÌ·¯ÇÑ ´ë»ç¹°µéÀÌ myosin IIA¿Í ezrinÀ» Æ÷ÇÔÇÑ apical junctional complex ¹× °ü·Ã actin regulatory proteinÀÇ integrity¸¦ À¯ÁöÇÔÀ¸·Î½á colitisÀÇ mouse model°ú °ü·ÃµÈ Áõ°¡µÈ gut permeabilityÀ» º¸È£ÇÏ°í, ÀÌ·¯ÇÑ È¿°ú´Â aryl hydrocarbon receptor(AhR)¿¡ dependentÇÏ´Ù´Â °ÍÀ» ¹àÇô³»¾ú½À´Ï´Ù.

ÇöÀç antibioitcs induced dysbiosis¿¡ ÀÇÇÑ Àå ³» ȯ°æ º¯È­¿Í ±×¿¡ ´ëÇÑ host¿Í bacteria¿¡ ´ëÇÑ °øºÎ¸¦ °è¼ÓÇÏ°í ÀÖ´Â »óȲ¿¡¼­ ÀÌ·¯ÇÑ ¿äÀÎ Áß ÇÑ °¡Áö¿¡ ´ëÇØ ´õ °øºÎÇÒ ¼ö ÀÖ¾úÀ¸¸ç, ½ÇÇè Áß tight juctnioÀ» confocal·Î ÂïÀº °ÍÀ» Âü°íÇÏ¿© ÇâÈÄ ÀÖÀ» ¼ö ÀÖ´Â Àå ³» hypoxia staning¿¡ È°¿ëÇÒ ¼ö Àֱ⿡ ¼±Á¤ÇÏ¿© °øºÎÇÏ¿´½À´Ï´Ù.

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https://www.pnas.org/doi/10.1073/pnas.2000047117
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