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Cell‐free culture supernatant of Lactobacillus curvatus Wikim38 inhibits RANKL‐induced osteoclast differentiation and ameliorates bone loss in ovariectomized mice
Author(s) -
Jang A.R.,
Park J.S.,
Kim D.K.,
Park J.Y.,
Ahn J.H.,
Kim D.Y.,
Lee T.S.,
Chang J.Y.,
Choi J.H.,
Park J.H.
Publication year - 2021
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/lam.13525
Subject(s) - rankl , ovariectomized rat , osteoclast , bone resorption , endocrinology , downregulation and upregulation , medicine , chemistry , osteoporosis , bone mineral , nf κb , cancer research , estrogen , inflammation , receptor , biochemistry , activator (genetics) , gene
This study was conducted to investigate the inhibitory effects of the cell‐free culture supernatant of Lactobacillus curvatus Wikim 38 (LC38‐CS) on RANKL‐induced osteoclast differentiation and bone loss in a mice model of ovariectomy‐induced post‐menopausal osteoporosis. LC38‐CS inhibited the RANKL‐induced differentiation of bone marrow‐derived macrophages (BMDMs) into osteoclasts in a dose‐dependent manner. F‐actin ring formation and bone resorption were also reduced by LC38‐CS treatment of RANKL‐treated BMDMs. In addition, LC38‐CS decreased the RANKL‐induced activation of the TRAF6/NF‐κB/MAPKs axis at the early stage and the expression of osteoclastogenesis‐related genes in BMDMs treated with RANKL. PRMT1 and ADMA levels, new biomarkers for osteoclastogenesis, were decreased by LC38‐CS treatment. The administration of LC38‐CS increased bone volume and bone mineral density in ovariectomized mice in μ‐CT analysis. These findings suggest that LC38‐CS inhibited RANKL‐induced osteoclast differentiation by the downregulation of molecular mechanisms and exerted anti‐osteoporotic effects.