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Kim JY, Kim JY, Cheon YH, Kwak SC, Baek JM, Kim YC, Yoon KH, Oh J, Lee MS. 9-Hydroxy-6,7-dimethoxydalbergiquinol inhibits osteoclast differentiation through down-regulation of Akt, c-Fos and NFATc1. Int Immunopharmacol 2014; 20:213-20. [PMID: 24630975 DOI: 10.1016/j.intimp.2014.03.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 02/19/2014] [Accepted: 03/02/2014] [Indexed: 12/27/2022]
Abstract
Recently, natural plant-derived products have been recognized as one of the main sources for drug discovery and development in human disease. 9-Hydroxy-6,7-dimethoxydalbergiquinol (HDDQ) isolated from the heart wood of Dalbergia odorifera is widely used in oriental medicine, however, the pharmacological effect of HDDQ in osteoclast-associated diseases remains unknown. In this study, HDDQ dose-dependently inhibited the early stage of RANKL-mediated osteoclast differentiation in bone marrow macrophages (BMMs) without cytotoxicity. HDDQ strongly inhibited Akt phosphorylation in RANKL-stimulated BMMs and did not show any effects on p38, JNK, and IκB phosphorylation and IκB degradation. Interestingly, we found that HDDQ down-regulated the induction by RANKL of c-Fos protein by suppressing its translation. Also, ectopic overexpression of c-Fos and NFATc1 rescued the inhibition of osteoclast differentiation by HDDQ. Furthermore, the Akt/c-Fos/NFATc1-regulated expression of genes required for osteoclastogenesis, such as OSCAR and TRAP, was inhibited by HDDQ. These findings suggest that HDDQ prevents osteoclast differentiation via down-regulation of Akt, c-Fos, and NFATc1 signaling molecules, suggesting a potential therapeutic value of HDDQ for bone disorders associated with increased bone resorption.
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Affiliation(s)
- Ju-Young Kim
- Imaging Science-based Lung and Bone Diseases Research Center, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Jung Young Kim
- Department of Oriental Medicine, Daejeon University, Daejeon 300-716, Republic of Korea
| | - Yoon-Hee Cheon
- Department of Anatomy, School of Medicine, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; BK21 Plus Program & Department of Smart Life-Care Convergence, Graduate School, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Sung Chul Kwak
- Department of Anatomy, School of Medicine, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; BK21 Plus Program & Department of Smart Life-Care Convergence, Graduate School, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Jong Min Baek
- Department of Anatomy, School of Medicine, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; BK21 Plus Program & Department of Smart Life-Care Convergence, Graduate School, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Youn-Chul Kim
- Standardized Material Bank for New Botanical Drugs, College of Pharmacy, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Kwon-Ha Yoon
- Imaging Science-based Lung and Bone Diseases Research Center, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; Department of Radiology, School of Medicine, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea
| | - Jaemin Oh
- Imaging Science-based Lung and Bone Diseases Research Center, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; Department of Anatomy, School of Medicine, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; BK21 Plus Program & Department of Smart Life-Care Convergence, Graduate School, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; Institute for Skeletal Disease, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea.
| | - Myeung Su Lee
- Imaging Science-based Lung and Bone Diseases Research Center, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; Institute for Skeletal Disease, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea; Division of Rheumatology, Department of Internal Medicine, Wonkwang University, Iksan, Jeonbuk 570-749, Republic of Korea.
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