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Àü¸³¼±¾Ï¿¡¼­ TGF¥âl, TGF¥â2 ¹ßÇö°ú Ki-67 Ç¥ÁöÁö¼öÀÇ ¿¹ÈÄÀû °¡Ä¡ Prognostic Value of TGF-¥â1, TGF-¥â2 Expression and Ki-67 Labelling Index in Prostate Cancer

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Abstract

°á·Ð
Àü¸³¼±¾Ï¿¡¼­ TGF-¥âl°ú TGF-¥â2 ´Ü¹éÀÇ ¹ßÇö°ú Ki-67ÀÇ ¹ßÇöÀ» ¸é¿ªÁ¶Á÷ÇÐÀû ¹æ¹ýÀ»
ÀÌ¿ëÇÏ¿© °üÂûÇÑ °á°ú Á¾¾ç¼¼Æ÷¿¡¼­ÀÇ TGF-¥âl°ú TGF-¥â2ÀÇ ¿°»öÁ¡¼ö´Â ÁÖÀ§ Á¤»ó¼¼Æ÷¿¡
¼­ÀÇ ¿°»öÁ¡¼ö¿¡ ºñÇØ Åë°èÇÐÀûÀ¸·Î ÀÇ¹Ì ÀÖ°Ô ³ô¾Ò°í Ki-67 LI¸¦ ÀÌ¿ëÇÑ Áõ½Ä Áö¼ö´Â Á¶
Á÷ÇÐÀû ºÐÈ­µµ°¡ ³·À» ¼ö·Ï Áõ½ÄÁö¼ö°¡ ³ô¾ÒÀ¸³ª PSA, ÀÓ»ó º´±â ¸²ÇÁÀý ÀüÀÌ¿Í´Â »ó°ü°ü
°è°¡ ¾ø¾ú´Ù. ÀÌ»óÀÇ °á°ú·Î ¼¼Æ÷Áõ½Ä ¾ïÁ¦ ÀÎÀÚÀÎ TGF-¥âl°ú TGF-¥â2´Â Àü¸³¼±ÀÇ ¾Ï¼¼Æ÷
¿¡¼­ Á¤»ó Àü¸³¼±Á¶Á÷º¸´Ù Áõ°¡Çϸç ÀÌ°ÍÀº Àü¸³¼±¾ÏÀÇ ¹ß»ý¿¡ »ý¹°ÇÐÀûÀ¸·Î Áß¿äÇÑ ¿ªÇÒÀ»
ÇÒ °ÍÀ¸·Î »ý°¢µÇ°í ÀÌ´Â Àü¸³¼±¾ÏÀÇ »õ·Î¿î Ä¡·áÀûÀΠǥÀûÀÌ µÉ ¼ö ÀÖÀ» °ÍÀ¸·Î »ý°¢µÈ´Ù.
±×·¯³ª TGF-¥â1°ú TGF-¥â2°¡ Àü¸³¼±Æ¯ÀÌÇ׿ø Gleason score, ÀÓ»ó º´±â ¹× ¸²ÇÁÀýÀüÀÌ
µî°ú´Â »ó°ü°ü°è°¡ ¾øÀ¸¹Ç·Î ¿¹ÈÄÀÎÀÚ·Î ÀÌ¿ëÇϱâ´Â ¾î·Æ´Ù. Ki-67 Ç¥ÁöÁö ¼ö´Â Gleason
scope¿Í´Â »ó°ü°ü°è°¡ ÀÖ¾î ¿¹ÈÄÀÎÀÚ·Î ÀÌ¿ëÇÒ ¼ö ÀÖÀ¸¸®¶ó »ý°¢µÈ´Ù. TGF-¥â1, TGF-¥â2
¿Í Ki-67 Ç¥ÁöÁö¼ö´Â ¼­·Î °£¿¡ »ó°ü°ü°è°¡ ¾ø¾úÀ¸¸ç À̵鿡 ´ëÇÑ Á»´õ ¸¹Àº ¿¹ÀÇ ¿¬±¸°¡
ÇÊ¿äÇϸ®¶ó »ý°¢µÈ´Ù.

Purpose : Transforming growth factor-¥â(TGF-¥â) is a potent modulator of cell
proliferation, differentiation, angiogenesis and immune system. We evaluate the
significance of the expression of TGF-¥â1 and TGF-¥â2 and correlation with Ki-67 as
prognostic factors in prostate cancer.
Materials and Methods : In order to investigate the expression of TGF-¥â1, TGF-¥â2
and Ki-67, we analyzed immunohistochemical staining from paraffin blocks of 22 cases
of the prostate carcinoma and adjacent normal prostate.
Results : The TGF-¥â1 straining scores of the tumor cells were higher than those of
the adjacent normal epithelial cells(p=0.001). The TGF-¥â2 staining scores of the tumor
cells were also higher than those of the adjacent normal epithelial cells(p=0.003).
However no correlation was observed between tumor surrounding stroma and normal
stroma in TGF-¥â1 and TGF-¥â2 staining scores. The serum PSA level, the clinical
stage, the Gleason score and the lymph node metastasis of the tumor was not correlated
with the staining score of TGF-¥â1 and TGF-¥â2. Ki-67 labelling index(LI) was
significantly associated with the histologic grade, while no relationship was observed
between Ki-67 LI and clinical stage. TGF-¥âl and TGF-¥â2 staining score was not
statistically correlated with the Ki-67 LI.
Conclusions : These results indicate that the prostatic cancer was associated with
alteration of TGF-¥âl and TGF-¥â2 expression by prostatic epithelial cells which may
be biologically important in the development of prostate cancer and TGF-¥â1 and TGF-
¥â2 expression may be new target of treatment of prostate cancer Prognostic value of
TGF-¥â1 and TGF-¥â2 expression was not statistically significant but Ki-67 LI was
significantly associated with Gleason score.

Å°¿öµå

Prostate cancer; Transforming growth factor¥â; Ki-67;

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