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MYC-dependent oxidative metabolism regulates osteoclastogenesis via nuclear receptor ERRα
Seyeon Bae, … , Marjolein van der Meulen, Kyung-Hyun Park-Min
Seyeon Bae, … , Marjolein van der Meulen, Kyung-Hyun Park-Min
Published May 22, 2017
Citation Information: J Clin Invest. 2017;127(7):2555-2568. https://doi.org/10.1172/JCI89935.
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Research Article Bone Biology

MYC-dependent oxidative metabolism regulates osteoclastogenesis via nuclear receptor ERRα

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Abstract

Osteoporosis is a metabolic bone disorder associated with compromised bone strength and an increased risk of fracture. Inhibition of the differentiation of bone-resorbing osteoclasts is an effective strategy for the treatment of osteoporosis. Prior work by our laboratory and others has shown that MYC promotes osteoclastogenesis in vitro, but the underlying mechanisms are not well understood. In addition, the in vivo importance of osteoclast-expressed MYC in physiological and pathological bone loss is not known. Here, we have demonstrated that deletion of Myc in osteoclasts increases bone mass and protects mice from ovariectomy-induced (OVX-induced) osteoporosis. Transcriptomic analysis revealed that MYC drives metabolic reprogramming during osteoclast differentiation and functions as a metabolic switch to an oxidative state. We identified a role for MYC action in the transcriptional induction of estrogen receptor–related receptor α (ERRα), a nuclear receptor that cooperates with the transcription factor nuclear factor of activated T cells, c1 (NFATc1) to drive osteoclastogenesis. Accordingly, pharmacological inhibition of ERRα attenuated OVX-induced bone loss in mice. Our findings highlight a MYC/ERRα pathway that contributes to physiological and pathological bone loss by integrating the MYC/ERRα axis to drive metabolic reprogramming during osteoclast differentiation.

Authors

Seyeon Bae, Min Joon Lee, Se Hwan Mun, Eugenia G. Giannopoulou, Vladimir Yong-Gonzalez, Justin R. Cross, Koichi Murata, Vincent Giguère, Marjolein van der Meulen, Kyung-Hyun Park-Min

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