Abstract:
:Receptor activator of NF-kappaB ligand (RANKL) is essential for osteoclast (OC) differentiation/activation and functions through its receptor RANK at the surface of the osteoclastic cells. This study investigated for the first time the direct effects of hRANKL on protease/protease inhibitor expressions and protease activities in purified rabbit osteoclast cultures, using semi-quantitative RT-PCR, gelatin zymography, and enzymatic assays. RANKL was shown to exert in vitro pro-resorptive effects by increasing osteoclast marker expressions (Tartrate resistant acid phosphatase (TRAP) and cathepsin K), MMP-9 expression, and pro-MMP-9 activity and by diminishing TIMP-1 expression, leading to an up-regulation of the MMP-9/TIMP-1 ratio.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Wittrant Y,Theoleyre S,Couillaud S,Dunstan C,Heymann D,Rédini Fdoi
10.1016/j.bbrc.2003.09.084subject
Has Abstractpub_date
2003-10-24 00:00:00pages
774-8issue
3eissn
0006-291Xissn
1090-2104pii
S0006291X03018813journal_volume
310pub_type
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