ArticleBone research2026
C/EBPβ dictates postmenopausal FSHβ transcription and blockade of AEP/C/EBPβ pathway alleviates osteoporosis.
Article in Bone research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Follicle-stimulating hormone (FSH), a gonadotropin that rises in post-menopausal females, activates its receptor FSHR to trigger bone loss via increasing bone resorption by osteoclasts. FSH stimulates CCAAT/enhancer binding protein beta (C/EBPβ) /asparagine endopeptidase (AEP) pathway, facilitating neural degeneration in the brain of mouse models with Alzheimer's disease (AD). However, whether C/EBPβ/AEP pathway feeds back and modulates FSHβ bone resorption action remains elusive. Here we show that C/EBPβ acts as a transcription factor for fshb gene and directly binds its promoter, mediating its mRNA transcription in the pituitary gland. Knocking down C/EBPβ in primary pituitary cells significantly blunts GnRH (gonadotropin-releasing hormone)-induced FSHβ expression. Knockout of C/EBPβ also robustly diminishes FSHβ levels in mice. Inactivation of AEP, either by knockout of AEP or its small molecular inhibitor, antagonizes C/EBPβ and suppresses FSHβ levels, attenuating ovariectomy (OVX)-elicited osteoporosis. Markedly, a specific AEP inhibitor (#11a) displays comparable therapeutic effect as an FDA-approved drug teriparatide in OVX-induced osteoporosis. Hence, these findings support that C/EBPβ dictates FSHβ transcription and blocking AEP by its inhibitor represses C/EBPβ-mediated FSHβ levels, exerting prominent therapeutic efficacy toward osteoporosis.
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