ÇǺÎÁ¾¾ç¿¡¼­ÀÇ O-GlcNAcylationÀÇ ¸é¿ªÁ¶Á÷È­ÇÐÀû °íÂû
Immunohistochemical Study of O-GlcNAcylation in Human Skin Tumors

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ÀÌ¿µ(Lee Young) - Ãæ³²´ëÇб³ ÀÇÇÐÀü¹®´ëÇпø ÇǺΰúÇб³½Ç
È«ºÎÈÖ(Hong Boo-Hwi) - Ãæ³²´ëÇб³ ÀÇÇÐÀü¹®´ëÇпø ÇǺΰúÇб³½Ç
ÃÖ´ë°æ(Choi Dae-Kyoung) - Ãæ³²´ëÇб³ ÀÇÇÐÀü¹®´ëÇпø ÇǺΰúÇб³½Ç
ÀÓ½½±â(Lim Seul-Ki) - Ãæ³²´ëÇб³ ÀÇÇÐÀü¹®´ëÇпø ÇǺΰúÇб³½Ç
¼Õ°æÃ¶(Sohn Kyung-Cheol) - Ãæ³²´ëÇб³ ÀÇÇÐÀü¹®´ëÇпø ÇǺΰúÇб³½Ç
ÀÓ¸í(Im Myung) - Ãæ³²´ëÇб³ ÀÇÇÐÀü¹®´ëÇпø ÇǺΰúÇб³½Ç
¼­¿µÁØ(Seo Young-Joon) - Ãæ³²´ëÇб³ ÀÇÇÐÀü¹®´ëÇпø ÇǺΰúÇб³½Ç
ÀÌ¿µÈ£(Lee Young-Ho) - Ãæ³²´ëÇб³ ÀÇÇÐÀü¹®´ëÇпø ÇØºÎÇб³½Ç
ÀÌÁõÈÆ(Lee Jeung-Hoon) - Ãæ³²´ëÇб³ ÀÇÇÐÀü¹®´ëÇпø ÇǺΰúÇб³½Ç
±èâ´ö(Kim Chang-Deok) - Ãæ³²´ëÇб³ ÀÇÇÐÀü¹®´ëÇпø ÇǺΰúÇб³½Ç

Abstract

´Ü¹éÁú Àü»ç ÈÄ º¯Çü (posttranslational modification)Àº ´Ü¹éÁú ±â´ÉÀ» Á¶ÀýÇÏ´Â ±âÀüÀÇ Çϳª·Î, ´çÈ­(gycosylation), ¾Æ¼¼Æ¿È­ (acetylation), ¸Þƿȭ (methylation) µîÀ» Æ÷ÇÔÇÑ´Ù. O-linked ¥â-N-acetylglucosamine (OGlcNAc)¿¡ ÀÇÇÑ ´Ü¹éÁú Àü»ç ÈÄ º¯ÇüÀº ¸¹Àº ¼¼Æ÷ ¹ÝÀÀ¿¡ °ü¿©ÇÏ´Â Á¶Àý ±âÀüÀ¸·Î ÃÖ±Ù ¿¬±¸°¡ ¸¹ÀÌ ÁøÇàµÇ°í ÀÖ´Ù. ƯÈ÷, O-GlcNAc¿¡ ÀÇÇÑ ´Ü¹éÁú Àü»ç ÈÄ º¯Çü(O-GlcNAcylation)Àº À¯¹æ¾Ï, Æó¾Ï ¹× ´ëÀå¾Ï µî°ú °°Àº ¾ÏÁúȯÀÇ ¹ßº´¿¡ °ü¿©ÇÔÀÌ º¸°íµÇ¾ú´Ù. ±×·¯³ª ÀÌ·¯ÇÑ O-GlcNAcylationÀÌ ÇǺÎÁ¾¾ç¿¡ ¾î¶°ÇÑ ¿µÇâÀ» ¹ÌÄ¡´ÂÁö Àß ¹àÇôÁ® ÀÖÁö ¾Ê´Ù. º» ¿¬±¸¿¡¼­´Â ´Ù¾çÇÑ ÇǺÎÁ¾¾çÀ» ´ë»óÀ¸·Î ÇÏ¿© O-GlcNAcylationÀÌ ¾î¶»°Ô ÀϾ´ÂÁö ¸é¿ªÁ¶Á÷È­ÇÐÀ» ÅëÇØ »ìÆìº¸¾Ò´Ù. ±× °á°ú, ¾ç¼ºÁ¾¾ç¿¡ ºñÇØ ¾ÏÀü±¸Áõ ¹× ¾Ç¼ºÁ¾¾ç¿¡¼­ ÀüüÀûÀ¸·Î O-GlcNAcylationÀÌ Áõ°¡ÇØ ÀÖ¾ú´Ù. ¶ÇÇÑ O-GlcNAcylationÀ» ´ã´çÇÏ´Â È¿¼ÒÀÎ O-GlcNAc transferase (OGT) ¹× O-GlcNAcÀ» Á¦°ÅÇÏ´Â È¿¼ÒÀÎ O-GlcNAcase (OGA) ¹ßÇö ¶ÇÇÑ ¾ç¼ºÁ¾¾ç¿¡ ºñÇØ ¾ÏÀü±¸Áõ ¹× ¾Ç¼ºÁ¾¾ç¿¡¼­ Áõ°¡ÇØ ÀÖ¾ú´Ù. ÀÌ·¯ÇÑ ¿¬±¸ °á°ú´Â O-GlcNAcylationÀÌ ¿©·¯ ÇǺÎÁ¾¾çÀÇ ¹ßº´¿¡ °ü¿©ÇÔÀ» ½Ã»çÇÑ´Ù.
O-linked ¥â-N-acetylglucosamine modification is an important post-translational modification, emerging as a novel regulatory mechanism in various cellular events. Recently, several studies have shown that O-GlcNAcylation plays an essential role in human breast, lung, and colon cancers. With regard to skin cancers, the role of O-GlcNAcylation has yet to be elucidated. To investigate whether O-GlcNAcylation is linked to human skin tumor development, immunohistochemical analysis was performed to investigate the presence of OGlcNAcylation in various skin tumors. We evaluated the levels of O-GlcNAcylation, O-GlcNAc transferase, and O-GlcNAcase in 29 benign tumors, 12 premalignant tumors, and 26 malignant tumors in skin. Compared to the benign tumors, premalignant and malignant tumors had increased patterns of O-GlcNAcylation. In addition, the O-GlcNAc transferase and O-GlcNAcase levels were higher in premalignant and malignant tumors than in benign tumors. Interestingly, O-GlcNAcase levels were significantly increased in premalignant tumors compared to benign and malignant tumors. These results suggest that O-GlcNAcylation of proteins may play an important role in the development of human skin tumors.

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Immunohistochemistry, O-GlcNAc, O-GlcNAcase, O-GlcNAc transferase, Skin neoplasm, O-GlcNAc, O-GlcNAcase, O-GlcNAc transferase
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