The Molecular Mechanism of Baicalin on RANKL-induced Osteoclastogenesis in RAW264.7 Cells
International Journal of Oral Biology
;
: 67-72, 2013.
Article
in Korean
| WPRIM
| ID: wpr-118618
ABSTRACT
This study examined the anti-osteoclastogenic effects of baicalin on receptor activator of NF-kB ligand (RANKL)-induced RAW264.7 cells. Baicalin is a flavonoid that is produced by Scutellaria baicalensis and is known to have multiple biological properties, including antibacterial, anti-inflammatory and analgesic effects. The effects of baicalin on osteoclasts were examined by measuring 1) cell viability; 2) the formation of tartrate-resistant acid phosphatase (TRAP) (+) multinucleated cells; 3) RANK/RANKL signaling pathways and 4) mRNA levels of osteoclast-associated genes. Baicalin inhibited the formation of RANKL-stimulated TRAP (+) multinucleated cells and also suppressed the RANKL-stimulated activation of p-38, ERK, cSrc and AKT signaling. Baicalin also inhibited the RANKL-stimulated degradation of IkappaB in RAW264.7 cells. In addition, the RANKL-stimulated induction of NFATc1 transcription factors was found to be abrogated by this flavonoid. Baicalin was further found to decrease the mRNA expression of osteoclast-associated genes, including carbonic anhydrase II, TRAP and cathepsin K in the RAW264.7 cells. Our data thus demonstrate that baicalin inhibits osteoclastogenesis by inhibiting the RANKL-induced activation of signaling molecules and transcription factors in osteoclast precursors.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Osteoclasts
/
Transcription Factors
/
Acid Phosphatase
/
Flavonoids
/
RNA, Messenger
/
NF-kappa B
/
Carbonic Anhydrase II
/
Scutellaria baicalensis
/
NFATC Transcription Factors
/
Cathepsin K
Language:
Korean
Journal:
International Journal of Oral Biology
Year:
2013
Type:
Article
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