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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.27, no.1, 2009³â, pp.66-72
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Àΰ£¸Á¸· ³»ÇǼ¼Æ÷ÁÖ¿¡¼ °í³óµµ Æ÷µµ´çÀÌ caspase-3 °æ·Î¸¦ ÅëÇØ ¼¼Æ÷ÀÚ¿¬»ç À¯µµ
( High Glucose Induces Apoptosis through Caspase-3 Dependent Pathway in Human Retinal Endothelial Cell Line ) |
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| ´ç´¢¸Á¸·º´ÁõÀº ¼±¸¿¡¼ ¼ºÀεéÀÇ ½Ç¸íÀ» ÀÏÀ¸Å°´Â ¿øÀÎÀÌ´Ù. ´ç´¢º´ÀÌ ÀÖÀ» ¶§ °íÇ÷´çÁõÀº ¿©·¯ ¼¼Æ÷ ÇüÅ¿¡¼ ¼¼Æ÷ÀÚ¿¬»ç¸¦ À¯µµÇÏÁö¸¸ ±× ±âÀÛÀº ¸íÈ®ÇÏ°Ô ¹àÇôÁöÁö ¾Ê¾Ò´Ù. º» ¿¬±¸ÀÇ ¸ñÀûÀº Àΰ£¸Á¸· ³»ÇǼ¼Æ÷¿¡¼ °íÇ÷´ç Æ÷µµ´çÀÌ ¼¼Æ÷ÀÚ¿¬»ç¿¡ ¹ÌÄ¡´Â ¿µÇâ¿¡ ´ëÇÏ¿© ¾Ë¾Æº¸¾Ò´Ù. ¸Á¸· ³»ÇǼ¼Æ÷´Â 5, 25, 50 mM Æ÷µµ´çÀÌ Æ÷ÇÔµÈ IMDM¹èÁö¿¡¼ 37$^{circ}C$, 5% CO$_2$Á¶Á¤µÈ Ç׿±⿡¼ 24, 36, 48½Ã°£ µ¿¾È ¹è¾çÇÏ¿´´Ù. ¿©·¯ ³óµµÀÇ Æ÷µµ´çÀ» ó¸®ÇÑ Àΰ£¸Á¸· ³»ÇǼ¼Æ÷ ÇüÅÂÀÇ Æ¯Â¡Àº À§»óÂ÷Çö¹Ì°æÀ¸·Î °üÂûÇÏ¿´°í, ¼¼Æ÷ÀÇ »ýÁ¸Àº MTT assay¸¦ ÅëÇØ »êÁ¤ÇÏ¿´´Ù. °í³óµµ Æ÷µµ´ç¿¡¼ Ȱ¼º»ê¼ÒÁ¾ÀÎ ¼¼Æ÷ ³»ÀÇ H$_2$O$_2$´Â FOX II assay¿Í caspase-3 assay¿¡ ÀÇÇÑ ¼¼Æ÷ÀÚ¿¬»ç¸¦ ÅëÇØ ÃøÁ¤ÇÏ¿´´Ù. °í³óµµÀÇ Æ÷µµ´çÀ» ó¸®ÇÑ ¼¼Æ÷¿¡¼ÀÇ DNAºÐÀýÈ´Â ¾Æ°¡ÆÞ½º °Ö Àü±â¿µµ¿À» ÅëÇØ °üÂûÇÏ¿´´Ù. 25, 50mM Æ÷µµ´çÀ» Æ÷ÇÔÇÑ ¹è¾ç¾×¿¡ 48½Ã°£ µ¿¾È ¹è¾çÇÑ ¼¼Æ÷´Â ÇüŰ¡ º¯Çϰí. ¼¼Æ÷ÀÚ¿¬»ç¿¡ ÀÇÇØ À¯µµµÈ DNA ºÐÀýȸ¦ °üÂû ÇÒ ¼ö ÀÖ¾ú´Ù. 25, 50 mMÀÇ Æ÷µµ´ç¿¡¼ ¹è¾çÇÑ ¼¼Æ÷¿Í 5 mM Æ÷µµ´ç¿¡¼ 24, 36, 48 ½Ã°£ ¹è¾çÇÑ ¼¼Æ÷¿Í ºñ±³ÇßÀ» ¶§ 25, 50 mM¿¡¼ Á×Àº ¼¼Æ÷ÀÇ ¼ö°¡ ´õ ¸¹¾Ò´Ù. ¶ÇÇÑ °ú»êȼö¼ÒÀÇ ¾ç°ú caspase-3ÀÇ È°¼ºÀº °í³óµµ Æ÷µµ´çÀ» ó¸®ÇÑ ¼¼Æ÷¿¡¼ Áõ°¡ÇÏ¿´´Ù. °á·ÐÀûÀ¸·Î °í³óµµ Æ÷µµ´çÀÌ ¹è¾çµÈ Àΰ£¸Á¸· ³»ÇǼ¼Æ÷¿¡¼ ¼¼Æ÷ÀÚ¿¬»ç¸¦ À¯µµÇÏ´Â °ÍÀ» Áõ¸íÇÏ¿´°í, °íÇ÷´çÁõÀÇ À¯µµ·Î caspase Ȱ¼º¿¡ ÀÇÁ¸ÀûÀÎ ¼¼Æ÷ÀÚ¿¬»ç´Â Áõ°¡ÇÏ¿´´Ù. °í³óµµÀÇ Æ÷µµ´çÀÌ Ã³¸®µÈ ¼¼Æ÷¿¡¼ Ȱ¼º»ê¼ÒÁ¾ À¯¹ß°ú caspase-3 Ȱ¼º°£ÀÇ °ü°è´Â ¾ÆÁ÷ Á¶»çµÇÁö¾Ê¾Ò´Ù. |
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| Diabetic Retinopathy (DR) is a leading cause of blindness among adults in the western countries. Hyperglycemia is a condition, that induces apoptotic cell death in a variety of cell types in diabetes, but the mechanism remains unclear. The aim of the study is to understand the effects of high Glucose on Human Retinal Endothelial Cells. Retinal endothelial cells were cultured in Iscove's Modified Dulbecco's Medium (IMDM) containing 5, 25 and 50 mM Glucose, incubated for 24, 36 and 48 hours in humidified 5 % CO$_2$ incubator at 37$^{circ}C$. Human Retinal Endothelial Cell Line (HREC) were characterized for morphology with different treatment by phase contrast microscopic analysis. Number of dead and viable cells was counted by trypan blue exclusion and supported by MTT assay. The intracellular Hydrogen peroxide (H$_2$O$_2$), a Reactive Oxygen Species (ROS) generation in high glucose conditions was assessed by FOX II assay and apoptosis by caspase-3 assay. The high glucose treated cells undergoing DNA fragmentation was witnessed by Agarose gel electrophoresis. We found that the cells incubated with 25 and 50 mM glucose containing medium for 48 hours altered the morphology of the cell, induced apoptosis and DNA fragmentation. The dead cell number were high in 25 and 50 mM when compared to the cells incubated with 5 mM glucose for 24, 36, and 48 hours. Also, the H$_2$O$_2$ levels and the activity of caspase-3 were increased in high glucose treated cells. Conclusions/interpretation: Our results demonstrated that elevated glucose induces apoptosis in cultured HREC. The hyperglycemia-induced increase in apoptosis may be dependent on caspase activation. The association between ROS generation and caspase-3 activation on high glucose treated cells is yet to be investigated. |
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| Ű¿öµå |
| HREC;diabetic retinopathy;apoptosis;caspase-3; |
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ȯ°æ»ý¹° / v.27, no.1, 2009³â, pp.66-72
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200920258463367)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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