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Dendritic cells can prime anti-tumor CD8+ T cell responses through major histocompatibility complex cross-dressing." ÀÔ´Ï´Ù.
Anti-tumor immunity¸¦ ¸Å°³ÇÏ´Â Áß¿äÇÑ cell typeÀÎ CD8+ T cellÀÌ activationµÇ±â À§Çؼ´Â antigen presenting cellµé¿¡ ÀÇÇÑ Ç׿øÁ¦½Ã °úÁ¤À» ÇÊ¿ä·Î Çϸç, ƯÈ÷ dendritic cell µîÀÌ ¿ÜºÎ·ÎºÎÅÍ À¯·¡ÇÑ antigenÀ» MHC class I ºÐÀÚ¿¡ loadingÇÏ¿© CD8+ T cellÀÇ activationÀ» À¯µµÇÏ´Â °úÁ¤ÀÎ
cross-presentationÀ» ÅëÇØ tumor antigen specific CD8+ T cell response¸¦ À¯µµÇÒ ¼ö ÀÖ´Ù´Â °ÍÀÌ Àß ¾Ë·ÁÁ® ÀÖ¾ú½À´Ï´Ù.
±×·¯³ª ÇØ´ç ³í¹®¿¡¼´Â classicalÇÑ cross-presentation pathway°¡ ¾Æ´Ñ, alternative antigen presentation pathway Áß ÇϳªÀÎ
MHC cross-dressing¿¡ ÁýÁßÇÏ¿© ƯÁ¤ tumor model¿¡¼ anti-tumor CD8+ T cellÀÌ Çü¼ºµÇ´Â ±âÀüÀ» ¹àÇû½À´Ï´Ù.
¸ÕÀú, MHC class I ºÐÀÚ¸¦ ¹ßÇöÇÏÁö ¾Ê´Â C1498 tumor ³»¿¡ Á¸ÀçÇÏ´Â CD8+ T cellÀÇ proliferation, cytokine production µî effector functionÀÌ ³·Àº °ÍÀ» È®ÀÎÇÏ¿´À¸¸ç, B16.OVA tumor¸¦ »ç¿ëÇÑ ¸ðµ¨¿¡¼µµ ÀÌ·¯ÇÑ CD8+ T cell effector functionÀÌ °¨¼ÒÇÏ´Â °ÍÀ» È®ÀÎÇß½À´Ï´Ù.
ÀÌ·¸°Ô TIL Áß CD8+ T cellÀÇ function¿¡ Â÷À̸¦ ³ªÅ¸³ª°Ô ¸¸µç ±âÀüÀ» È®ÀÎÇϱâ À§ÇØ tumor ³»ºÎ¿¡ Á¸ÀçÇÏ´Â APCµé¿¡¼ tumor cell À¯·¡ÀÇ MHC class I ºÐÀÚ°¡ ¹ßÇöµÇ´Â °ÍÀ» È®ÀÎÇÏ¿´À¸¸ç, ÇØ´ç APC ±ºÁý Áß¿¡¼µµ CD103+ cDC1ÀÇ °æ¿ì CD8+ T cell°úÀÇ co-culture¸¦ ÁøÇàÇßÀ» ¶§ CD8+ T cellÀ» primingÇÏ´Â ´É·ÂÀÌ ´õ ³ôÀº °ÍÀ» È®ÀÎÇß½À´Ï´Ù.
¶ÇÇÑ ÀÌ·¯ÇÑ Çö»óÀÌ ±âÁ¸¿¡ ¾Ë·ÁÁ® ÀÖ´ø cross-presentation pathway¿Í´Â º°°³·Î ³ªÅ¸³´Ù´Â °ÍÀ» È®ÀÎÇÏ¿´À¸¸ç, ¸¶Áö¸·À¸·Î human À¯·¡ tumor cell lineÀ» È°¿ëÇÏ¿©
HLA cross-dressingÀÌ human APC¿¡¼µµ ³ªÅ¸³ª´Â °ÍÀ» È®ÀÎÇÏ¿´½À´Ï´Ù.
Áï, ÀÌ ³í¹®Àº ƯÁ¤ tumor model¿¡¼ anti-tumor CD8+ T cell response¸¦ Çü¼ºÇϱâ À§Çؼ cross-dressingÀ̶ó´Â ƯÀÌÇÑ antigen presentation pathway°¡ ÀÛ¿ëÇÑ´Ù´Â °ÍÀ» ¹àÈù ³í¹®ÀÔ´Ï´Ù.
ÇØ´ç ³í¹®À» °øºÎÇÑ ÀÌÀ¯´Â B16.OVA tumor cellÀ» È°¿ëÇÑ tumor model ³»¿¡¼ CD8+ T cellÀÇ effector functionÀ» È®ÀÎÇÏ´Â ¹æ¹ý°ú ±â°£, ±×¸®°í Tumor infitrated dendritic cellÀ» »ç¿ëÇÑ co-culture assay µîÀ» °øºÎÇϱâ À§Çؼ ¼±Á¤ÇÏ°Ô µÇ¾ú½À´Ï´Ù.
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³í¹® ¸µÅ©: Cell Press / PMC