Basic fibroblast growth factor°¡ osteopontin À¯ÀüÀÚ ¹ßÇö¿¡ ¹ÌÄ¡´Â ¿µÇâ
Effect of basic fibroblast growth factor on osteopontin gene expression
¼Ò¼Ó »ó¼¼Á¤º¸
¹è¿ø¼ö/Won Su Bae
±èÇöÁ¤/±è¿µÁø/³²¼øÆí/·ùÇö¸ð/Hyun Jung Kim/Young Jin Kim/Soon Hyeun Nam/Hyun Mo Ryoo
KMID : 0358920000270020300
Abstract
kabstract :
Fibroblast growth factor(FGF)´Â ¼¼Æ÷ÀÇ ¼ºÀå°ú À̵¿, ºÐÈ¿Í »ýÁ¸°ú °ü·ÃµÈ ¿©·¯ °¡Áö
°úÁ¤À» Á¶ÀýÇÏ´Â °ÍÀ¸·Î ¾Ë·ÁÁ®ÀÖ´Ù. À̵éÀÇ prototypeÀÎ FGF-2´Â FGF receptors (FGFRs)
¸¦ ÅëÇؼ ¼¼Æ÷³»·Î ½ÅÈ£¸¦ Àü´ÞÇϴµ¥, µÎ°³ºÀÇÕºÎÀÇ Á¶±âÀ¶ÇÕÀ» º¸ÀÌ´Â craniosynostosis
´Â FGFRsÁß, ƯÈ÷ FGFR-2ÀÇ point mutation¿¡ ÀÇÇؼ ¾ß±âµÈ´Ù. ÃÖ±Ù ¿©·¯ º¸°í¿¡¼
FGF/FGFR ½ÅÈ£Àü´ÞÀº °ñ¾Æ¼¼Æ÷ÀÇ ºÐÈ¿¡ ÀÖ¾î ÇʼöÀûÀÎ ¿ªÇÒÀ» ÇÑ´Ù°í ÇÏ¿´À¸¸ç, bFGF
soaked bead¸¦ Á㠵ΰ³°ñÀÇ ½Ã»óºÀÇÕºÎÀÇ mid-mesenchyme°ú osteogenic front ºÎÀ§¿¡ Àû
¿ëÇÏ¿´À» ¶§ osteopontin(OPN) À¯ÀüÀÚÀÇ ¹ßÇöÀ» À¯µµÇÑ´Ù°í ÇÏ¿´´Ù. ÀÌ¿¡ º» ¿¬±¸¿¡¼´Â
ST-2 cell line¸¦ ÀÌ¿ëÇÑ in vitro ½ÇÇè¿¡¼ bFGF°¡ OPN À¯ÀüÀÚ°¡ ¹ßÇö¿¡ ¹ÌÄ¡´Â ¿µÇâ°ú
±× ±âÀüÀ» Northern blot analysis¸¦ ÅëÇؼ ¿¬±¸ÇÏ°íÀÚ ÇÏ¿´´Ù. 1 ng/§¢ bFGFÀÇ Åõ¿©´Â
OPN, fibronectin À¯ÀüÀÚ¹ßÇöÀ» Áõ°¡½ÃÄ×À¸¸ç, type I collagen À¯ÀüÀÚ¹ßÇöÀº °¨¼Ò½ÃÄ×À¸³ª
alkaline phosphatase À¯ÀüÀÚ ¹ßÇö¿¡´Â ¿µÇâÀ» ¹ÌÄ¡Áö ¾Ê¾Ò´Ù. OPNÀº ±× ¹ßÇö¾ç»óÀÌ bFGF
ÀÇ ³óµµÁõ°¡¿¡ µû¶ó Áõ°¡ÇÏ´Â ¾ç»óÀ¸·Î ³ªÅ¸³µÀ¸¸ç, ½Ã°£°æ°ú¿¡ µû¸¥ ¹ßÇö¾ç»óµµ bFGF Åõ
¿© 3½Ã°£Â°ºÎÅÍ bFGF¸¦ Åõ¿©ÇÑ ±º¿¡¼ ´ëÁ¶±º¿¡ ºñÇØ ³ô°Ô ³ªÅ¸³µÀ¸¸ç ÀÌ´Â 24½Ã°£±îÁö
½Ã°£ÀÇ °æ°ú¿¡ µû¶ó Áõ°¡ÇÏ´Â ¾ç»óÀ» º¸¿´´Ù. ´Ü¹éÁú ÇÕ¼º ¾ïÁ¦Á¦ÀÎ cycolheximide¸¦ ó¸®
ÇÑ ±º¿¡¼´Â OPNÀÇ Áõ°¡ ¾ç»óÀ» º¸ÀÌÁö ¾Ê¾Ò´Âµ¥ ÀÌ´Â bFGFdp ÀÇÇÑ OPN À¯ÀüÀÚ ¹ßÇöÀÌ
»õ·Î¿î ÀüÀÚÁ¶Àý ´Ü¹éÁú ÇÕ¼º µîÀÇ ¿©·¯ ´Ü°è¸¦ °ÅÃļ ÀϾÀ» ÀǹÌÇÑ´Ù. °á·ÐÀûÀ¸·Î
bFGF´Â »õ·Î¿î Àü»çÁ¶Àý ´Ü¹éÁúÀÇ ÇÕ¼ºÀ» ÅëÇؼ OPN À¯ÀüÀÚ ¹ßÇöÀ» ³óµµ ¹× ½Ã°£ ÀÇÁ¸
ÀûÀ¸·Î Áõ°¡½ÃŲ´Ù.
#ÃÊ·Ï#
-Abstraction-
The Fibroblast growth factors(FGFs) plays an important role in the control of
osteogenesis during skeletal development, Especially, FGF-2 is a potent mesodermal
inducer during embryogenesis and FGF receptors (FGFRs) messages are strongly
expressed in developing bones.
In this study, we investigated the effect of bFGF on osteopontin(OPN) gene
expression in ST-2 cells and tried to elucidate the mechanism of its stimulatory effects.
The obtain results were as follows;
The treatment of bFGF (1ng/§¢) upregulates OPN, fibronectin mRNA levels and
downregulates type I collagen mRAN leves. But there was no remarkable difference in
alkaline phosphatase mRNA levels between two groups The OPN gene expression
increased in a dose-dependent manner up to 10ng/§¢ and OPN gene began to occur at
around 3h with continuous increase up to 24h then decreased to basal level at 48h, 30
minutes pretreatment with cycloheximide (500§·/§¢), a protein synthesis inhibitor, prior
to addition bFGF resulted in blocking bFGF induced OPN expression. These results
suggest that bFGF increased the level of OPN mRNA in a dose and time-dependent
manner via the synthesis of certain transcriptional regulatory proteins.
Basic Fibroblast growth factor; Osteopontin; Craniosynostosis; Fibroblast growth factor receptor; Basic Fibroblast; growth factor; Osteopontin; Fibronectin; Alkaline phosphatase;
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