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Effect of RGD peptide coating of implant titanium surface on human mesenchymal stem cell response

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±è¹Î¼ö ( Kim Min-Su ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°úº¸Ã¶Çб³½Ç
ÀüÀ±°æ ( Jeon Yun-Kyung ) - ºÎ»ê´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
ÀüÀ¯Áø ( Jeon You-Jin ) - ºÎ»ê´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
·ùÀçÁØ ( Ryu Jae-Jun ) - °í·Á´ëÇб³ÀÇ·á¿ø Ä¡°úº¸Ã¶Çб³½Ç
ÇãÁߺ¸ ( Huh Jung-Bo ) - ºÎ»ê´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
À±¹ÌÁ¤ ( Yun Mi-Jung ) - ºÎ»ê´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç

Abstract

¿¬±¸¸ñÀû: ¾ç±Ø »êÈ­ ƼŸ´½ ÀÓÇöõÆ®ÀÇ Ç¥¸é¿¡RGDÆéŸÀ̵带 È­ÇÐÀû °íÁ¤ ¹× ¹°¸®Àû ÈíÂø ¹æ¹ýÀ» ÅëÇØ ÄÚÆÃÇÏ°í, ÀÌ·¯ÇÑ ÄÚÆùæ¹ý¿¡ µû¸¥ Ç¥¸é º¯È­¿Í ÆéŸÀ̵åÀÇ ÄÚÆÿ©ºÎ, Àΰ£°£¿±Áٱ⼼Æ÷ ¹è¾ç½ÃÀÇ ºÎÂø, Áõ½Ä, ºÐÈ­¸¦ ºñ±³ÇÏ¿©, ÆéŸÀ̵带 ÀÓÇöõÆ® Ç¥¸é¿¡ ÄÚÆýÃÅ°´Â ¹æ¹ý°ú ¼¼Æ÷ÀÇ ¹ÝÀÀ °£ÀÇ °ü°è¸¦ ºÐ¼®ÇÏ°íÀÚ ÇÏ¿´´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: Á÷°æ 12.0 mm, µÎ²² 3.0 mmÀÇ ¾ç±Ø »êÈ­ ƼŸ´½ µð½ºÅ© »ó¿¡, ´ëÁ¶±ºÀº ¾Æ¹«·± ÄÚÆÃÀ» ½ÃÇàÇÏÁö ¾Ê¾ÒÀ¸¸ç, ½ÇÇ豺Àº Ç¥¸é¿¡ Çü±¤ ¹°ÁúÀÌ °íÁ¤µÇ¾î ÀÖ´Â RGDÆéŸÀ̵带 È­ÇÐÀû °íÁ¤ ¹æ¹ý °ú ¹°¸®Àû ÈíÂø ¹æ¹ýÀ¸·Î ÄÚÆýÃÄ×´Ù. ÆéŸÀ̵å ÄÚÆà ÀÌÈÄÀÇ Ç¥¸é º¯È­¸¦ »ìÆ캸±â À§ÇØ ÁÖ»çÀüÀÚÇö¹Ì°æ°üÂû, Çü±¤Çö¹Ì°æ °üÂû, X-ray Photoelectron Spectrometry (XPS) ºÐ¼®À» ½ÃÇàÇÏ¿´´Ù. ¼¼Æ÷ ºÎÂø Á¤µµ¿Í ÇüÅÂÀÇ º¯È­ ¹× Áõ½Ä Á¤µµ¸¦ Æò°¡ÇÏ¿´´Ù. ºÐÈ­ÀÇ Á¤µµ¸¦ »ìÆ캸±â À§ÇØ, Á¤·®ÁßÇÕÈ¿¼Ò¿¬¼â¹ÝÀÀ, alkaline phosphatase activity assay, alizarin red assay¸¦ ÀÌ¿ëÇÏ¿© °¢°¢ ºÐ¼®ÇÏ¿´´Ù. Åë°è ºÐ¼®Àº SPSS (ver. 17.0, SPSS, IL, USA)ÇÁ·Î±×·¥À» ÀÌ¿ëÇÏ¿© Kruskal-Wallis test·Î À¯ÀǼºÀ» °ËÁõÇÏ¿´°í, »çÈÄ °ËÁ¤Àº Bonferroni test¸¦ ½ÃÇàÇÏ¿´´Ù(P=.05).

°á°ú:Çü±¤ Çö¹Ì°æ, XPS ºÐ¼® °á°ú, µÎ °¡Áö ÄÚÆà ¹æ¹ý¿¡¼­ ¸ðµÎ ÆéŸÀ̵åÀÇ ÄÚÆÃÀÌ È®ÀεǾúÀ¸¸ç, ¹°¸®Àû ÈíÂø ¹æ¹ýÀÌ È­ÇÐÀû °íÁ¤ ¹æ¹ýº¸´Ù ´õ ¸¹Àº ¾çÀÇ ÆéŸÀ̵带 ÄÚÆýÃų ¼ö ÀÖ¾ú´Ù. ÄÚÆà ¹æ¹ýÀÇ Â÷ÀÌ¿¡ µû¸¥ ¼¼Æ÷ÀÇ Ãʱ⠺ÎÂø Á¤µµ¿Í ÇüÅ º¯È­, Áõ½ÄÀÇ Á¤µµ¿¡´Â À¯ÀÇÇÒ¸¸ÇÑ Â÷ÀÌ°¡ ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù(P>.05). ¼¼Æ÷ÀÇ ºÐÈ­ Á¤µµ´Â ¹°¸®Àû ÈíÂø ½ÇÇ豺¿¡¼­ ´ëÁ¶±º°ú È­ÇÐÀû ÈíÂø ½ÇÇ豺¿¡¼­º¸´Ù collagen type I°ú osteocalcin, osteopontinÀÇ ¾çÀÌ Áõ°¡µÇ¾úÀ¸¸ç, ALP activity°¡ À¯ÀÇÇÏ°Ô Áõ°¡µÇ¾ú´Ù(P<.05).

°á·Ð:RGD-ÆéŸÀ̵带 ¾ç±Ø »êÈ­ ÀÓÇöõÆ®¿¡ ÄÚÆÃÇÔÀ¸·Î½á Àΰ£°£¿±Áٱ⼼Æ÷ÀÇ ¹ÝÀÀ¿¡ ¿µÇâÀ» ÁÖ¾î ÀÓÇöõÆ®ÀÇ °ñÀ¯ÂøÀ» ÁõÁø½Ãų ¼ö ÀÖ´Â °¡´É¼ºÀ» È®ÀÎÇÏ¿´À¸¸ç, ƯÈ÷ ¸¹Àº ¾çÀÇ ÆéŸÀ̵带 ÄÚÆÃÇÒ ¼ö ÀÖ´Â ¹°¸®Àû ÈíÂø ¹æ¹ýÀÌ È­ÇÐÀû °íÁ¤ ¹æ¹ýº¸´Ù Àΰ£°£¿±Áٱ⼼Æ÷ ¹ÝÀÀ¿¡ ´õ È¿°úÀûÀÓÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.

Purpose: The aim of this in vitro study was to estimate surface characteristic after peptide coating and investigate biological response of human mesenchymal stem cell to anodized titanium discs coated with RGD peptide by physical adhesion and chemical fixation.

Materials and Methods: Fluorescence isothiocyanate (FITC) modified RGD-peptide was coated on the anodized titanium discs (diameter 12 mm, height 3 mm) using two methods. One was physical adhesion method and the other was chemical fixation method. Physical adhesion was performed by dip and dry procedure, chemical fixation was performed by covalent bond via silanization. In this study, human mesenchymal stem cell was used for experiments. The experiments consisted of surface characteristic evaluation after peptide coating, analysis about cell adhesion, proliferation, differentiation, and mineralization. Obtained data are statistically treated using Kruskal-Wallis test and Bonferroni test was performed as post hoc test (P=.05).

Results: The evaluation of FE-SEM images revealed no diffenrence at micro-surfaces between each groups. Total coating dose was higher at physical adhesion experimental group than at chemical fixation experimental group. In cell adhesion and proliferation, RGD peptide coating did not show a statistical significance compared with control group (P>.05). In cell differentiation and mineralization, physical adhesion method displayed significantly increased levels compared with control group and chemical fixation method (P<.05).

Conclusion: RGD peptide coating seems to enhance osseointegration by effects on the response of human mesenchymal stem cell. Especially physical adhesion method showed more effective than chemical fixation method on response of human mesenchymal stem cell.

Å°¿öµå

¾ç±Ø»êÈ­ ƼŸ´½; RGD ÆéŸÀ̵å; Àΰ£°£¿±Áٱ⼼Æ÷; ºÎÂø; Áõ½Ä; ºÐÈ­
Anodized titanium; RGD peptide; Human mesenchymal stem cell; Adhesion; Proliferation; Differentiation

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