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Anti-osteoclastogenic Activity of Matairesinol via Suppression of p38/ERK-NFATc1 Signaling Axis

Anti-osteoclastogenic Activity of Matairesinol via Suppression of p38/ERK-NFATc1 Signaling Axis

Sik-Won Choi, Kie-In Park, Jeong-Tae Yeon, Byung Jun Ryu, Kwang-Jin Kim, Seong Hwan Kim

BMC Complement Altern Med. 2014 Jan 21;14:35.

PMID: 24444335

Abstract:

Background:
Matairesinol is a plant lignan present in a wide variety of foodstuffs such as seeds, vegetables and fruits. It has various biological functions including anti-angiogenic, anti-cancer and anti-fungal activities, but its anti-osteoporotic activity, if any, is unknown.
Methods:
For osteoclast differentiation, primary mouse bone marrow-derived macrophage cells (BMMs) were cultured for 4 days in the presence of RANKL and M-CSF with the vehicle (DMSO) or matairesinol. Cell cytotoxicity was examined by CCK-8 assay. Gene expression of NFATc1, TRAP, OSCAR, v-ATPasev0d2 were observed in the presence or absence of matairesinol (10 μM) for the indicated times. For evaluating the involvement of NFATc1 in the anti-osteoclastogenic action of matairesinol, BMMs were infected with pMX-IRES-GFP or pMX-IRES-CA-NFATc1-GFP for 8 h with polybrene, and then infected BMMs were cultured with M-CSF and RANKL for 4 days in the presence or absence of matairesinol (10 μM). MAPK signaling activation was examined by immunoblotting. For measuring the resorptive activity of mature osteoclasts, osteoclasts and osteoblasts were co-cultured on BioCoat Osteologic MultiTest slides, and treated with matairesinol for 24 h.
Result:
Here we show that matairesinol dose-dependently inhibited the RANKL-induced differentiation of BMMs into osteoclasts by downregulating RANKL-induced expression and activity of NFATc1. Ectopic overexpression of NFATc1 blunted the anti-osteoclastogenic effect of matairesinol implicating NFATc1 in the action of matairesinol. Additionally, matairesinol blocked the RANKL-induced activation of p38 and ERK in BMMs, but had no effect on bone resorption activity in mature osteoclasts.
Conclusion:
Taken together, our results suggest that the anti-osteoporotic activity of matairesinol could arise from its anti-osteoclastogenic potential via p38/ERK-NFATc1 signaling, but not by way of anti-resorptive action.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP580723	Matairesinol		580-72-3	Price

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