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±¸°­¾Ï ¹ß»ý °úÁ¤¿¡¼­ TGF-¥á ¹× TGF-¥â ¹ßÇö¿¡ °üÇÑ ¿¬±¸

EXPRESSION OF TGF-¥á AND TGF-¥â

¾çÈñâ, ±èÀºÃ¶, À̵¿±Ù,
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¾çÈñâ (  ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­¾Ç¾È¸é¿Ü°úÇб³½Ç
±èÀºÃ¶ (  ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­º´¸®Çб³½Ç
À̵¿±Ù (  ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­¾Ç¾È¸é¿Ü°úÇб³½Ç

Abstract

°á·Ð
DMBAÀ¯µµ ÇܽºÅÍ ±¸°­¾Ï ¸ðµ¨¿¡¼­ TGF-¥á ¹× TGF-¥âÀÇ ¹ßÇö Á¤µµ¿Í ÃâÇö ½Ã±â¸¦
ºñ±³ °üÂûÇÏ°íÀÚ DMBA Åõ¿© ÈÄ 6ÁÖ,8ÁÖ, 10ÁÖ, 12ÁÖ, 14ÁÖ, 16ÁÖ, 18ÁÖ, 20ÁÖ¿¡ ¸é¿ªÁ¶Á÷È­
ÇÐÀû ¿°»öÀ» ½ÃÇèÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. DMBAµµÆ÷ 6, 8, 10ÁÖ¿¡´Â »óÇÇ ÀÌÇü¼º, 12 ÁÖ´Â »óÇdz»¾Ï, 14ÁÖºÎÅʹ ħ½À¼º ÆíÆò ¼¼
Æ÷¾ÏÁ¾ÀÇ ¼Ò°ßÀ» º¸¿´´Ù.
2. TGF-¥á´Â ´ëÁ¶±º ¹× ¾Ï ¹ß»ý ÀÌÀü ´Ü°èÀÇ ±âÀúÃþ°ú »ó±âÀúÃþ¿¡¼­ ¾ç¼º ¹ÝÀÀÀ» º¸ÀÌ°í
¾ÏÁ¾ ¹ß»ý ÀÌÈÄ¿¡ À¯±ØÃþÀ» Áß½ÉÀ¸·Î ¹ßÇöµÇ¾î ¹ßÇö ºÎÀ§ÀÇ À̵¿ÀÌ °üÂûµÇ¾ú´Ù.
3. TGF-¥á´Â 16ÁÖ ÀÌÈÄÀÇ ¾Ï¼¼Æ÷¿¡¼­ ¹ßÇö Á¤µµ°¡ Å©°Ô °¨¼ÒµÇ¾úÀ¸¸ç, ¾Ï Á߽ɺΠº¸´Ù
Á¤»ó Á¶Á÷°úÀÇ °æ°èºÎ¿¡¼­ ¹ßÇöÀÌ ¾à°£ ³ô¾Ò°í, »óÇǵµÀÇ Á߽ɺΰ¡ º¯¿¬ºÎÀÇ Á¾¾ç ¼¼Æ÷º¸´Ù
¸¹Àº ¹ßÇöÀ» º¸¿´´Ù.
4. TGF-¥á´Â ¾ç¼ºÁö¼ö°¡ DMBA Åõ¿© ±â°£¿¡ ºñ·ÊÇÏ¿© Áõ°¡ÇÏ´Â °æÇâÀ» º¸¿´À¸¸ç, 12ÁÖ
¿Í 18ÁÖ ÀÌÈÄ¿¡ Åë°èÇÐÀûÀ¸·Î À¯ÀǼºÀÌ ÀÖ¾ú´Ù(P<0.05).
5. TGF-¥â¹ßÇöÀº ¸ðµç ½ÇÇ豺 ¹× ´ëÁ¶±ºÀÇ ¼¼Æ÷Áú¿¡ ÁÖ·Î ³ªÅ¸³µÀ¸¸ç, ´ëÁ¶±º ¹× Àü¾Ï
´Ü°è¿¡¼­´Â »ó±âÀúÃþ°ú À¯±ØÃþ¿¡¼­ °æ¹ÌÇÑ ¾ç¼º ¹ÝÀÀÀ» º¸ÀÌ°í ¾ÏÁ¾ ¹ß»ý ÀÌÈÄ¿¡ »ó±â ÀúÃþ
À» Áß½ÉÀ¸·Î ÀüÃþ¿¡ ¹ßÇöµÇ¾ú´Ù.
6. TGF-¥â¹ßÇöÀº 6ÁÖ ÀÌÈÄÀÇ ¾Ï¼¼Æ÷¿¡¼­ ¹Ì¸¸¼ºÀ¸·Î ¾ç¼º ¹ßÇöÀÌ ³ªÅ¸³µÀ¸¸ç, »óÇǵµ Áß
½ÉºÎ°¡ º¯¿¬ºÎÀÇ Á¾¾ç ¼¼Æ÷¿¡¼­ º¸´Ù ¶Ñ·ÇÇÑ ¹ßÇöÀ» º¼ ¼ö ÀÖ¾ú°í, Á¾¾çÀÇ Á߽ɺκ¸´Ù´Â Á¾
¾çÀÇ ÁøÇ༺ º¯¿¬ºÎ¿¡¼­ ´õ °­ÇÑ ¾ç¼º ¹ÝÀÀÀ» º¸¿´´Ù.
ÀÌ»ó°ú °°Àº ¼Ò°ßÀ¸·Î ±¸°­¾Ï ¹ß»ý ´Ü°è¿¡¼­ TGF ¹ßÇöÀº µÎ ´Ü°èÀÇ ¹ß»ý ¾ç»óÀ» º¸¿©
Àü¾Ï ´Ü°è¿¡¼­´Â ¼ºÀå Á¶ÀýÀÌ ¾ÈµÇ¾î °ú¹ßÇöµÇ´Â ½Ã±â¿Í, ¾Ï ¹ß»ý ÈÄ ½Ã±â¿¡´Â ÁÖÀ§ °£Áú
Á¶Á÷³»·Î TGF´Ü¹éÁú ÃàÀûÀ¸·Î ÀÎÇÏ¿© ¹ßÇöÀÌ Áõ°¡µÇ´Â ½Ã±â°¡ ÃâÇöµÈ´Ù°í »ç·ÁµÇ¸ç ÀÌ·¯
ÇÑ ¼ºÀå ÀÎÀÚÀÇ °ú¹ßÇöÀÌ ¿¹ÈÄÀÎÀÚÁßÀÇ Çϳª°¡ µÉ ¼ö ÀÖ´Ù°í ¿©°ÜÁø´Ù.
#ÃÊ·Ï#
Though many genetic and epigenetic alterations have been identified in hamster and
carcinogenesis model, there is no information about the possible role of transforming
growth factor related with oral cancer. The purpose of this paper was to find the
expression patte±º of transforming growth factor alpha and beta during the stages of
complete oral carcinogenesis model in hamster.
0.5% 9, 10-dimethyl-1, 2-benzanthracene(DMBA) in mineral oil was topically applied
to the buccal pouch of 75 hamster three times a week during the experimental periods.
The experimental animals were subdivided into two groups of control and experiment.
Only the mineral oil was applied to the control group. 0.5% DMBA in mineral oil was
applied to the experimental groups of 6, 8, 10, 12, 14, 16, 18 and 20 weeks. The
expression of the TGF-¥á and TGF-¥â protein were evaluated by the distribution and
intensity of positive cells during the carcinogenesis using the immunohistochemical
study.
The following results were obtained ;
1. The buccal pouch epithelium of hamster was histologically changed to the dysplasia
at 6, 8, 10 weeks, carcinoma in situ at 12 weeks, and squamous cell carcinoma at 14
weeks.
2. The expression of the TGF-¥á was restricted to the parabasal and basal layers of
the normal and dysplastic mucosa, but those positive cells were extended to the spinous
layers of the epithelium in the carcinoma.
3. The degree of TGF-¥á expression was markedly decreased in the carcinoma at 16,
18, 20.
The strong positive staining in the center of cancer islands and weak positive staining
in periphery of tumor were seen at the stage of squamous cell carcinoma.
4. The positive index of the TGF-¥á had a tendency to increase with DMBA-
applied time.
There was a statistically significant difference between 12, 18, 20 experimental group
and control group(p<0.05).
5. The expression of TGF-¥â was shown at the cytoplasm of all control and
experimental groups, and the parabasal and basal layers of the normal and dyslastic
mucosa, but it was shown at the basal layers of the epithelium in the carcinoma.
6. TGF-¥â was expressed diffusely at 16, 18, 20 experimental gruop. The strong
positive staining in the center of cancer islands and positive staining in periphery of
tumor were seen at the stage of squamous cell carcinoma.
Form the above finding, the expression of TGF-¥á and TGF-¥â in oral carcinogenesis
model seems to have two formal stages, the first being an overexpression step as
reaction to uncontrolled growth and the second being one in which exteral protein
accumulate in the surrounding stroma and intracytoplasm. Overexpression of TGF-¥á
and TGF-¥â may have important cooperative roles for the promotion of cancer and
factor of prognosis.

Å°¿öµå

hamster; oral carcinogenesis; TGF-¥á; TGF-¥â; expression.;

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