当前位置： SCI文献检索 > CLINICAL AND EXPERIMENTAL RHEUMATOLOGY期刊下所有文献 > Rhein, a diacerhein-derived metabolite, modulates the expression of matrix degrading enzymes and the cell proliferation of articular chondrocytes by inhibiting ERK and JNK-AP-1 dependent pathways.

Rhein, a diacerhein-derived metabolite, modulates the expression of matrix degrading enzymes and the cell proliferation of articular chondrocytes by inhibiting ERK and JNK-AP-1 dependent pathways.

Abstract：

OBJECTIVE:To determine the effects of rhein on the expression of matrix metalloproteinases (MMP-1, -3, 13) and ADAMTs 4, 5 (a disintegrin and metalloproteinase with thrombospondin type-I repeat)/aggrecanases-1, -2 in interleukin-1-stimulated bovine articular chondrocytes, and to investigate the signalling pathways involved in the effects of the drug on gene expression and cell proliferation. METHODS:Bovine chondrocytes were treated with 10(-4) M rhein for 18 h, followed by 10 ng/ml IL-1Beta for 30 min (cytoplasmic extracts) or 24 h (RNA extraction and EMSA). mRNA was assessed by RT-PCR for the expression of MMPs and aggrecanases, and the phosphorylation of MAP kinases was studied by Western blotting. NF-kappaB and AP-1 DNA binding were determined by gel retardation assay. The effects of inhibitors of these signalling pathways were compared to those of rhein. The proliferation of human chondrocytes and synoviocytes treated with the drug was also investigated. RESULTS:IL-1Beta-induced stimulation of the MMPs and aggrecanase-1 was markedly inhibited by rhein. The drug reduced IL-1Beta-induced NF-kappaB and AP-1 DNA binding, as well as the phosphorylation of ERK and JNK. Similar effects were produced by the specific inhibitors of these signalling pathways. In addition, rhein reduced the proliferation of both human chondrocytes and synoviocytes. CONCLUSION:Our data indicate that rhein may reduce the deleterious effects of IL-1Beta on osteoarthritic cartilage through its effects on the ERK- and JNK-dependent pathways. Both its anti-catabolic and anti-proliferative properties may explain its value in the treatment of joint diseases.

journal_name

Clin Exp Rheumatol

journal_title

Clinical and experimental rheumatology

authors

Legendre F,Bogdanowicz P,Martin G,Domagala F,Leclercq S,Pujol JP,Ficheux H

subject

Has Abstract

pub_date

2007-07-01 00:00:00

pages

546-55

issue

4

eissn

0392-856X

issn

1593-098X

pii

2094

journal_volume

25

pub_type

杂志文章

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