期刊
NATURE COMMUNICATIONS
卷 10, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-018-08046-4
关键词
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资金
- UCSF Women's Reproductive Health RAP Award [R01 DK099722]
- NRSA NDSP [P30-DK097748, K01 DK098320]
- UCLA Women's Health Center
- CTSI [NIH UL1TR001881]
- AHA Postdoctoral Fellowship [16POST29870011, 16POST27260361]
- VA Merit Review Grant [1l01BX003212]
- NIH [P30 AR066262, K08 DK106577]
- NIH/NCI [R01CA172667]
- UCSF DERC [NIDDK P30 DK063720]
- UCSF CCMBM [NIH P30 AR066262]
- Vanderbilt Hormone Assay Core [NIH DK059637, DK020593]
- [F32 DK107115-01A1]
Central estrogen signaling coordinates energy expenditure, reproduction, and in concert with peripheral estrogen impacts skeletal homeostasis in females. Here, we ablate estrogen receptor alpha (ER alpha) in the medial basal hypothalamus and find a robust bone phenotype only in female mice that results in exceptionally strong trabecular and cortical bones, whose density surpasses other reported mouse models. Stereotaxic guided deletion of ER alpha in the arcuate nucleus increases bone mass in intact and ovariectomized females, confirming the central role of estrogen signaling in this sex-dependent bone phenotype. Loss of ER alpha in kisspeptin (Kiss1)-expressing cells is sufficient to recapitulate the bone phenotype, identifying Kiss1 neurons as a critical node in this powerful neuroskeletal circuit. We propose that this newly-identified female brain-to-bone pathway exists as a homeostatic regulator diverting calcium and energy stores from bone building when energetic demands are high. Our work reveals a previously unknown target for treatment of age-related bone disease.
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