Herbal medicine Sho-saiko-to (TJ-9) increases expression matrix metalloproteinases (MMPs) with reduced expression of tissue inhibitor of metalloproteinases (TIMPs) in rat stellate cell.
We have reported that Sho-saiko-to (TJ-9) prevents liver fibrosis in vivo. To gain further insights into the effect of TJ-9, the matrix metalloproteinases (MMPs)/tissue inhibitors of metalloproteinases (TIMPs) balance was examined. Hepatic stellate cells (HSCs) were isolated from male Wistar rats and cultured with TJ-9 (0-1000 microg/ml) on uncoated plastic dishes for 4 days. To elucidate the effects on the MMPs/TIMPs balance by TJ-9, quantitative analysis of type IV collagen-degrading activity, gelatin zymography and reverse zymography were carried out. Northern blot analysis was performed to determine the expression of MMP-2, 13 and TIMP-1 mRNAs. TJ-9 treatment resulted in dose-dependent upregulation of MMP-2, 13 mRNA and downregulation of TIMP-1 mRNA up to 500 microg/ml. Gelatin zymography, reverse zymography and quantitative analysis of type IV collagen-degrading activity confirmed that TJ-9 increased MMP-2 activity and prevented TIMP-1, 2 activities in a dose-dependent manner. SB203580 diminished the reduction of mRNA as well as the activity of TIMP-1 by TJ-9 and induction of mRNA as well as the activity of MMP-2. These results show that TJ-9 increased MMP-2, 13 activity with reduced TIMP-1, 2 activities on HSCs possibly via P38 pathway.
Sakaida
Isao
I
Department of Gastroenterology and Hepatology, Yamaguchi University, School of Medicine, Minami-Kogushi 1-1-1, Ube, Yamaguchi 755-8505, Japan. sakaida@po.cc.yamaguchi-u.ac.jp
Hironaka
Koji
K
Kimura
Teruaki
T
Terai
Shuji
S
Yamasaki
Takahiro
T
Okita
Kiwamu
K
D000818:Animals; D002478:Cells, Cultured; D017364:Collagenases / Q000235:genetics / Q000378:metabolism; D004365:Drugs, Chinese Herbal / Q000494:pharmacology*; D004791:Enzyme Inhibitors / Q000494:pharmacology; D015870:Gene Expression; D008099:Liver / Q000166:cytology / Q000187:drug effects* / Q000201:enzymology; D008297:Male; D053509:Matrix Metalloproteinase 13; D020778:Matrix Metalloproteinase 2 / Q000235:genetics / Q000378:metabolism; D020782:Matrix Metalloproteinases / Q000096:biosynthesis* / Q000235:genetics; D020928:Mitogen-Activated Protein Kinases / Q000037:antagonists & inhibitors; D012333:RNA, Messenger / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000235:genetics / Q000378:metabolism; D019714:Tissue Inhibitor of Metalloproteinases / Q000235:genetics / Q000378:metabolism*
D004365:Drugs, Chinese Herbal; D004791:Enzyme Inhibitors; D012333:RNA, Messenger; D019715:Tissue Inhibitor of Metalloproteinase-1; D019714:Tissue Inhibitor of Metalloproteinases; C461320:shosaiko-to; D020928:Mitogen-Activated Protein Kinases; D017364:Collagenases; D053509:Matrix Metalloproteinase 13; D020782:Matrix Metalloproteinases; C507083:Mmp13 protein, rat; D020778:Matrix Metalloproteinase 2