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½Å¼¼Æ÷¾Ï ȯÀÚ¿¡¼­ NFkB È°¼ºÈ­ÀÇ ¾ïÁ¦, Prostaglandin E2ÀÇ ¿ªÇÒ Tumor Induced Suppression of NF¥êB Activation in T Cells Derived from Patients with Renal Cell Carcinoma; The Role of Prostaglandin E2

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Abstract

¼­·Ð
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µÈ ½Å¼¼Æ÷¾ÏÀº ¾î¶² ÇüÅÂÀÇ Ä¡·á¿¡µµ ºÒ±¸ÇÏ°í ¿¹ÈÄ°¡ ºÒ·®ÇÏ¿© Æò±Õ »ýÁ¸±â°£ÀÌ 7°³¿ù·Î,
5³â ÀÌ»ó »ýÁ¸ÇÒ °¡´É¼ºÀº 1-2%¹Û¿¡ µÇÁö ¾Ê´Â´Ù. ÀüÀ̼º ½Å¼¼Æ÷¾ÏÀº ´Ù¸¥ Á¾¾ç°ú ´Þ¸® È­
Çпä¹ý, Ȧ¸ó¿ä¹ý¿¡ ¹ÝÀÀÀ²ÀÌ 10% ÀÌÇÏ·Î ¹Ì¹ÌÇÏ°í ¸é¿ª¿ä¹ý¿¡´Â ¾î´ÀÁ¤µµ ¹ÝÀÀÀ» º¸ÀÌ°í
ÀÖÁö¸¸ 20-30%·Î È¿°úÀûÀÌÁö ¸øÇÏ´Ù.
¸é¿ª¿ä¹ý¿¡ Á¾¾ç ¹ÝÀÀÀ²ÀÌ ÇÑ°è°¡ ÀÖ´Â °ÍÀº Á¾¾ç¼¼Æ÷ ÀúÇ×, ¾ïÁ¦¼¼Æ÷ À¯µµ MHC ¹ßÇöÀÇ
°á¿© Á¾¾çÀÌ TGF-¥â1, IL-10, PGE2¿Í °°Àº ¸é¿ª¾ïÁ¦ ¹°ÁúÀÇ »ý¼º°ú T¼¼Æ÷
¸é¿ª¹ÝÀÀÀÇ °á¿© °°Àº ¿©·¯ ÀÎÀڵ鿡 ÀÇÇÑ °ÍÀ¸·Î ¾Ë·ÁÁ® Àִ٠ƯÈ÷ T¼¼Æ÷´Â Á¾¾ç¿¡ ´ëÇÑ
ÀÎü ¸é¿ª¹ÝÀÀÀÇ Áß¿äÇÑ ¿ä¼ÒÀÌ°í ¸é¿ª¿ä¹ý¿¡´Â T¼¼Æ÷ ¸é¿ªÀÇ È°¼ºÈ­¿Í Áõ°­ÀÌ ÇʼöÀûÀε¥
Á¾¾ç ȯÀÚ¿¡¼­ ¹àÇôÁø T¼¼Æ÷ ±â´É°ú ½ÅÈ£Àü´ÞÀÇ ÀÌ»óÀº T¼¼Æ÷ ¸é¿ªÀ» À¯¹ßÇϴµ¥ Àå¾Ö°¡
µÇ°í ¸é¿ª¿ä¹ýÀÇ È¿°ú¸¦ °¨¼Ò½ÃÅ°´Â ÇÑ ¿äÀÎÀ¸·Î »ý°¢µÇ°í ÀÖ´Ù. T¼¼Æ÷ ±â´ÉÀÇ ÀÌ»óÀ» ÃÊ·¡
ÇÏ´Â Á¤È®ÇÑ ±âÀüÀº È®½ÇÄ¡ ¾ÊÁö¸¸ ¼¼Æ÷³» ½ÅÈ£Àü´Þ ¹°ÁúÀÇ ÀÌ»óÀÌ ÇÑ ¿äÀÎÀ¸·Î ¾Ë·ÁÁ® ÀÖ
´Ù. T¼¼Æ÷ È°¼ºÈ­´Â ¿©·¯ ½ÅÈ£Àü´Þ °æ·Î°¡ °ü¿©Çϴµ¥ ¼¼Æ÷ ¼ºÀå°ú ºÐÈ­¿¡ Áß¿äÇÑ ¿ªÇÒÀ»
ÇÏ´Â Àü»çÀÎÀÚÀÇ È°¼ºÂ÷¿Í ÇÙ³»·Î ÀüÀÌ°¡ Áß¿äÇÑ °úÁ¤ ÁßÀÇ ÇϳªÀÌ´Ù. Àü»çÀÎÀÚÀÎ NF¥êB
(nucleal factor ¥êB)´Â ¼¼Æ÷Áú³» ¿¡¼­ I¥êB(immunoglobuluin kappa B, NF¥êB inhibitor)¿Í
ºñÈ°¼ºÈ­ º¹ÇÕü·Î ÀÖ´Ù°¡ T¼¼Æ÷°¡ ÀڱصǸé NF¥êB°¡ ºÐ¸®µÇ¾î ¼¼Æ÷ÇÙÀ¸·Î ÀüÀÌ°¡ ÀϾ
DNAÀÇ Æ¯Á¤ ºÎÀ§¿¡ °áÇÕÇØ ¿©·¯°¡Áö À¯ÀüÀÚÀÇ ¹ßÇöÀ» Á¶ÀýÇÏ°í T¼¼ Æ÷¸¦ È°¼ºÈ­½ÃŲ´Ù.
ÀúÀÚµéÀº ½Å¼¼Æ÷¾Ï ȯÀÚÀÇ T¼¼Æ÷¿¡¼­ NF¥êB È°¼ºÈ­ÀÇ ¾ïÁ¦°¡ ÀϾ´Â ±âÀüÀ» ¹àÈ÷°í ½Å
¼¼Æ÷¾ÏÀÇ »óÃþ¾×°ú Á¾¾ç »ý¼º¹°Áú·Î ¾Ë·ÁÁø PGE2¿¡ ÀÇÇÑ NF¥êB È°¼ºÈ­ÀÇ
¾ïÁ¦°¡ ½Å¼¼Æ÷¾Ï ȯÀÚÀÇ T¼¼Æ÷¿¡¼­ ÀϾ´Â ¼Ò°ß°ú ÀÏÄ¡ÇÏ´ÂÁö¸¦ ±Ô¸í ÇÏ°íÀÚ ÇÏ¿´´Ù
#ÃÊ·Ï#
Purpose: T lymphocytes from patients with renal cell carcinoma(RCC) show reduced
immune function and impaired activation of the transcription factor, NF¥êB. Recent work
from this laboratory shows that supernatant fluid from RCC explants can inhibit
activation of NF¥êB. Because PGE2 can suppress T cell function and is
present in supernatant fluid from RCC explants, we determined if PGE2
could suppress the activation of NF¥êB.
Materials and Methods: Peripheral blood T cells from normal volunteers and RCC
patients were stimulated with crosslinked antiCD3 antibody and IL-2(1000u/ml) or
PMA(20ng/m1) and lonomycin(0.75rg/m1) for various lengths of time. The effect that
PGE, and RCC-5(supernatant fluid from RCC) had on NF¥êB was assessed by adding
PGE2 or RCC-S to normal T cells using western blotting and
electrophoretic mobility shift assay(EMSA).
Results: T cell activation results in the nuclear expression of two KB binding
complexes(C 1 and C2) as determined by EMSA. However, PGE2
suppressed the nuclear expression of KB binding activity with 10-5M
PGE2 having the most effect. PGE2 and RCC-S suppressed
the expression of Cl which is composed of NF¥êB1, ReIA and c-Rel whereas it had
minimal erect on C2 which is composed only of NF¥êB1. Western blotting verified that
PGE2 and RCC-S significantly reduced the nuclear but not the cytoplasmic
levels of ReIA, NF¥êBl and c-Rel. Furthermore, the results obtained with
PGE2 and RCC-S are similar to those obtained with T cells from RCC
patients
Conclusions: These results demonstrate that PGE2 can suppress NF¥êB
activation in T cells through inhibiting the nuclear translocation of ReIA, NF¥êBl and
c-Rel. PGE2 may contribute to the inhibition of NF¥êB that is mediated
by RCC supernatant.

Å°¿öµå

Transcription factors; 7 lymphocytes; Prostaglandin E2; Tumors; Supernatant;

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