MAGED1 Is a Negative Regulator of Bone Remodeling in Mice

M. Liu, L. Xu, X. Ma, Jiake Xu, J. Wang, M. Xian, X. Zhou, M. Wang, F. Wang, A. Qin, Q. Pan, C. Wen

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    © 2015 American Society for Investigative Pathology. Melanoma antigen family D1 (MAGED1), an important adaptor protein, has been shown to ubiquitously express and play critical roles in many aspects of cellular events and physiological functions. However, its role in bone remodeling remains unknown. We, therefore, analyzed the bone phenotype of Maged1-deficient mice. Maged1-deficient mice displayed a significant osteoporotic phenotype with a marked decrease in bone density and deterioration of trabecular architecture. Histomorphometric analysis demonstrated an increased mineral apposition rate as well as increased osteoclast number and surface in Maged1 knockout mice. At the cellular level, Maged1-deficient osteoblasts exhibited an increased proliferation rate and accelerated differentiation. MAGED1 deficiency also caused a promotion in osteoclastogenesis, and that was attributed to the cell autonomous acceleration of differentiation in osteoclasts and an increased receptor activator of NF-κB ligand/osteoprotegerin ratio, a major index of osteoclastogenesis, in osteoblasts. Thus, we identified MAGED1 as a novel regulator of osteoblastogenesis, osteoclastogenesis, and bone remodeling in a mouse model.
    Original languageEnglish
    Pages (from-to)2653-2667
    JournalAmerican Journal of Pathology
    Volume185
    Issue number10
    DOIs
    Publication statusPublished - 2015

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