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À§¾Ï¿¡¼­ÀÇ c-myc ¹× Alpha-1-antitrypsin(AAT)¿¡ ´ëÇÑ ¿¬±¸ The Expression of c-myc and AAT in Gastric Carcinoma

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Abstract

¼­·Ð
ÀÎü°¡ Á¤»óÀûÀÎ ¹ß´Þ ¹× Ç×»ó¼ºÀ» À¯ÁöÇϱâ À§Çؼ­´Â ÀÎü¸¦ ÀÌ·ç°í ÀÖ´Â ¼¼Æ÷ÀÇ ¼ºÀå,
ºÐÈ­ ¹× ¼Ò½ÇÀÌ »óÈ£°£¿¡ Á¤È®ÇÏ°Ô Á¶ÀýµÇ¾î¾ß Çϸç, ÀÌ °úÁ¤µé¿¡ ÀÌ»óÀÌ »ý°Ü »óÈ£°£ÀÇ ±Õ
ÇüÀÌ ±ú¾îÁú ¶§¿¡´Â ¾Ï°ú °°Àº ½É°¢ÇÑ Áúº´ÀÌ ¹ß»ýÇÏ°Ô µÈ´Ù.
±Ù·¡ ¾ÏÀÇ ¹ß»ý ¹× ÁøÀü¿¡ ´ëÇÑ ¿¬±¸ °á°ú, ¾ÏÀº ¼¼Æ÷ÀÇ ¼ºÀå, ºÐÈ­ ¹× ¼Ò½ÇÀ» ÁÖ°üÇÏ´Â
À¯ÀüÀÚµéÀÇ ´Ù´Ü°èÀûÀÎ º¯ÀÌ¿¡ ÀÇÇØ ÀϾ´Â Áúº´À¸·Î ¹àÇôÁö°í ÀÖÀ¸¸ç, ÀÌ¿¡ °ü¿©ÇÏ´Â À¯
ÀüÀÚµéÀº ¾ÏÀ¯ÀüÀÚ(oncogenes), ¾Ï¾ïÁ¦ À¯ÀüÀÚ(tumor supressor genes)µîÀ¸·Î ¾Ë·ÁÁö°í ÀÖ
°í, ÀÌ¿Ü¿¡µµ ¾ÏÀÇ ¹ß»ý ¹× ÁøÀü¿¡ °ü¿©ÇÏ´Â À¯ÀüÀÚµéÀÌ °è¼Ó ¹àÇôÁö°í ÀÖ´Â ÇüÆíÀÌ´Ù.
ÀÌÁß ¾ÏÀ¯ÀüÀÚ´Â ÇöÀç±îÁö ¾à 70¿©Á¾ÀÌ ¾Ë·ÁÁö°í Àִµ¥ À̵éÀÇ ´ëºÎºÐÀº Á¤»ó¼¼Æ÷¿¡ Á¸
ÀçÇÏ´Â À¯ÀüÀÚ(protooncogenes)·Î¼­, ¿©·¯ ¿øÀε鿡 ÀÇÇÑ ¼±Ãµ¼º ³»Áö´Â ÈÄõ¼º º¯ÀÌ¿¡ ÀÇÇØ
±¸Á¶ÀûÀ̳ª ±â´ÉÀûÀÎ º¯È­°¡ ÀϾ°í, ÀÌ·Î ÀÎÇØ ±× ÀÛ¿ëÀÌ È°¼ºÈ­µÇ¾î °ú´ÙÇÏ°Ô ³ªÅ¸³²À¸
·Î½á, ¾ÏÀÇ ¹ß»ýÀ̳ª ÁøÀü¿¡ °ü¿©ÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ´Ù.
ÀÌ·¯ÇÑ ¾ÏÀ¯ÀüÀÚÁß c-mycÀ¯½ÅÀÚ´Â avian myelomatous virus(MC29)¿¡¼­ ¹ß°ßµÇ´Â
v-myc À¯ÀüÀÚ¿Í °°Àº ±¸Á¶¸¦ °¡Áø ¼º»ó¼¼Æ÷¿¡ Á¸ÀçÇÏ´Â À¯ÀüÀڷμ­, »ç¶÷À» ºñ·ÔÇÑ ¿©·¯
µ¿¹°¿¡¼­ Á¸ÀçÇÏ°í ÀÖÀ½ÀÌ ¾Ë·ÁÁø °ÍÀε¥, À¯ÀüÀÚ ÁõÆøÀ» ºñ·ÔÇÑ ¸î °¡Áö ±âÀü¿¡ ÀÇÇØ ¾Ï¼¼
Æ÷¿¡ ÀÌ»ó ¹ßÇöµÇ¾î ¾ÏÀÇ ¹ß»ýÀ̳ª ÁøÀü¿¡ °ü¿©ÇÑ´Ù°í Çϸç, ÀÎü ¾ÏÁß¿¡´Â ÀÓÆļ±¾Ï¿¡¼­
°¡Àå ºó¹øÇÑ ÀÌ»ó¹ßÇöÀ» º¸À̸ç, ±× ¿Ü ¿©·¯ Á¾·ùÀÇ ¾Ï¿¡¼­µµ ±× ÀÌ»ó¹ßÇöÀÌ º¸°íµÇ°í ÀÖ´Ù.
±×¸®°í À§¾Ï¿¡¼­Æ÷ c-myc¿¡ ´ëÇÑ »ó´ç¼öÀÇ ¿¬±¸µéÀÌ º¸°íµÇ¾úÁö¸¸ ±× °á°úµéÀÌ ÀÏÄ¡ÇÏÁö
¾ÊÀ» »Ó ¾Æ´Ï¶ó Á¾ÇÕÀûÀÎ ÀÓ»óÀû °üÂûÀ» ½ÃÇàÇÑ ¿¬±¸´Â µå¹°´Ù.
AAT´Â Á¤»óÀûÀ¸·Î´Â °£¿¡¼­ »ý»êµÇ´Â ±Þ¼º±â´Ü¹é(acute phase protein)ÀÇ Çϳª·Î¼­
trypsin, plasminogen, collagenase, thrombin µî ¿©·¯ Á¾·ùÀÇ ´Ü¹éºÐÇØÈ¿¼Ò¸¦ ºÒÈ°¼ºÈ­½ÃÅ´
À¸·Î½á, Àü½ÅÀûÀ̰ųª ȤÀº ±¹¼Ò¿¡¼­ÀÇ ´Ü¹éºÐÇسª Ç÷ÀüÇü¼ºÀ» Á¶ÀýÇÏ´Â µ¥ °ü¿©ÇÏ´Â °ÍÀ¸
·Î ¾Ë·ÁÁ® ÀÖÀ¸¸ç, ±Ù·¡¿¡´Â ÀÌ AAT°¡ °£ »Ó ¾Æ´Ï¶ó ¼ÒÈ­°ü, ÃéÀå, Æó µî¿¡¼­µµ Á¤»óÀûÀ¸
·Î °üÂûµÊÀÌ ¹àÇôÁ³°í, Á¤»ó ¼ÒÈ­°ü¿¡¼­´Â ÃéÀåÀÇ ´Ü¹éºÐÇØÈ¿¼Òµé¿¡ ´ëÇÑ ¼Õ»óÀ» ¸·±â À§ÇÑ
¹æ¾î±âÀüÀÇ Çϳª·Î ÃßÁ¤µÇ°í ÀÖ´Ù.
±×¸®°í AAT°¡ ¾ÏÀÇ ÁøÀü¿¡ ¹ÌÄ¡´Â ÀÛ¿ëÀ¸·Î¼­´Â ¾Ï¼¼Æ÷ ÀÚü¿¡¼­ »ý»êµÇ¾î
plasminogen°ú °°Àº ´Ü¹éºÐÇØÈ¿¼Ò¸¦ ¾ïÁ¦ÇÏ°í, ¸é¿ª¾ïÁ¦ÀÛ¿ëÀ» °¡ÁüÀ¸·Î½á, ¾Ï¼¼Æ÷ ÁÖÀ§ÀÇ
´Ü¹éºÐÇØÀÛ¿ë ¹× ¿°Áõ¼ºº¯È­¿¡ ´ëÇØ ¾Ï¼¼Æ÷¸¦ º¸È£ÇÏ´Â ¿ªÇÒÀ» ´ã´çÇÏ´Â °ÍÀ¸·Î ÃßÁ¤µÇ°í
ÀÖ´Ù.
ÀÌ¿¡ º» ¿¬±¸¿¡¼­´Â ÀÌ·¯ÇÑ c-myc ¹× AAT¿Í À§¾Ï°úÀÇ °ü°è¸¦ º¸´Ù ´õ Á¤È®È÷ ±Ô¸íÇÏ
°í, ±× °á°ú°¡ ÀÓ»óÀûÀ¸·Îµµ µµ¿òÀÌ µÉ ¼ö ÀÖ´ÂÁö ¾Ë¾Æº¸±â À§ÇØ, ÀÓ»ó¿¡¼­ ¼Õ½±°Ô ¾òÀ» ¼ö
ÀÖ´Â ³»½Ã°æÀ¸·Î äÃëÇÑ À§¾ÏÁ¶Á÷¿¡ ´ëÇØ ¸é¿ªÁ¶Á÷È­ÇÐÀû °Ë»ç¸¦ ½ÃÇàÇÏ¿© c-myc ´Ü¹é
(c-Myc)ÀÇ ¹ßÇöµµ¸¦ Á¶»çÇÏ°í, ÀÌ¿Í ÇÔ²² AATÀÇ ¹ßÇöµµ °°ÀÌ Á¶»çÇÏ¿© ±× °á°úµéÀ» ¿©·¯
ÀÓ»ó»ó°ú ºñ±³ °ËÅäÇÏ¿© ±× ¼ºÀûÀ» º¸°íÇÏ´Â ¹ÙÀÌ´Ù.
#ÃÊ·Ï#
Purpose : We have conducted this study to investigate the role of c-myc and AAT in
gastric carcinoma progression and to see if clinical application of its expression in
cancer tissue is of help for the diagnosis or in determining prognosis of gastric
carcinoma.
Materials and Method : The expression of c-Myc and AAT by immunohistochemical
method applied to paraffin-embedded tissue sections of endoscopic biopsy materials of 71
cases of gastric carcinoma(24 early and 47 advanced) and immunoreactivities of antigens
were correlated with histological differentiation of carcinoma, degree of tumor infiltration
of mononuclear cells, serum levels of carcinoembryonic antigen(CEA) and presence of
distant metastases.
Results : c-Myc in gastric carcinoma tissue was expressed in 24 cases(33.8%), and
the rate of immunoreactivity of c-Myc was higher in the advanced carcinoma
cases(38.2%) than early carcinoma cases(25.0%), but the difference was not stastistically
significant. The elevated c-Myc expression correlated well with the elevation of serum
CEA levels(P<0.05), with the presence of distant metastses(p<0.05), especially with
peritoneal metastsis(p<0.05). AAT expression in gastric carcinoma was shown in 11
cases(14.1%), and the rate of immunoreactivity of AAT was significantly higher in
advanced carcinoma cases(21.3%) than early carcinoma cases(4.2%)(p<0.05). The elevated
expression of AAT correlated well with the elevation of serum CEA levels(p<0.05), and
showed negative correlation with the degree of mononuclear cell infiltration in tumor
area(p<0.05). The increased expression of c-Myc and AAT in gastric carcinoma
correlated well(p=0.05, k=0.31), which suggests the cooperative action of the two in
gastric carcinoma progression.
Conclusions : Our findings suggest that c-Myc expression may be a good marker of
high grade malignancy in gastric carcinoma, and may be able to be used clinically in
predicting distant metastases, especially for peritoneal dissemination. Our data also imply
that c-myc, through its proliferative action, may play all important role in the
progression of gastric carcinoma in cooperation with AAT which huts immunosuppresive
action.

Å°¿öµå

c-myc; AAT; Gastric carcinoma;

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