2. Academic Validation
  3. Artemether attenuates LPS-induced inflammatory bone loss by inhibiting osteoclastogenesis and bone resorption via suppression of MAPK signaling pathway

Artemether attenuates LPS-induced inflammatory bone loss by inhibiting osteoclastogenesis and bone resorption via suppression of MAPK signaling pathway

  • Cell Death Dis. 2018 May 1;9(5):498. doi: 10.1038/s41419-018-0540-y.
Haobo Wu 1 2,  Bin Hu 1 2,  Xiaopeng Zhou 1 2,  Chenhe Zhou 1 2,  Jiahong Meng 1 2,  Yute Yang 1 2,  Xiang Zhao 1 2,  Zhongli Shi 1 2,  Shigui Yan 3 4
Affiliations

Affiliations

  • 1 Department of Orthopedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China.
  • 2 Orthopedic Research Institute of Zhejiang University, Hangzhou, 310009, China.
  • 3 Department of Orthopedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China. [email protected].
  • 4 Orthopedic Research Institute of Zhejiang University, Hangzhou, 310009, China. [email protected].
PMID: 29703893 DOI: 10.1038/s41419-018-0540-y
Abstract

Osteolysis is an osteolytic lesion featured by enhanced osteoclast formation and potent bone erosion. Lacking of effective regimen for treatment of the pathological process highlights the importance of identifying agents that can suppress the differentiation and function of osteoclast. Artemether is a natural compound derived from Artemisia annua L. and it is popularized for the treatment of malaria. In present study, we demonstrated that artemether could suppress RANKL-induced osteoclastogenesis and expression of osteoclast marker genes such as tartrate-resistant Acid Phosphatase, Cathepsin K, matrix metalloproteinase 9, nuclear factor of activated T-cell cytoplasmic 1, and dendritic cell-specific transmembrane protein. It inhibited the osteoclastic bone resorption in a dose-dependent manner in vitro. Furthermore, artemether attenuated RANKL-induced MAPKs (ERK, JNK, p-38) activity. In addition, we have showed that artemether was able to mitigate bone erosion in a murine model of LPS-induced inflammatory bone loss. Taken together, these findings suggest that artemether reduces inflammatory bone loss via inhibition of MAPKs activation during osteoclast differentiation, and it might be a potential candidate for the treatment of osteoclast-related disorders.

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