Transcription Regulators and Bone Metabolism
Abstract
Although the transcriptional modulator interferon-related developmental regulator 1 (Ifrd1) has been identified as a transcriptional coactivator/repressor in various cells, including bone-resorbing osteoclasts, no attention has been paid to its role in bone-forming osteoblasts. Therefore, in this study we show that Ifrd1 is a critical mediator of both osteoblastogenesis and osteoclastogenesis through its expression in osteoblasts. Ifrd1 deficiency enhanced both osteoblast differentiation and maturation, and increased the expression of Runt-related transcription factor 2 and Osterix. A coculture experiment revealed that Ifrd1 deficient osteoblasts have higher osteoprotegerin (OPG) expression and less ability to support osteoclastogenesis. These findings suggest that Ifrd1 plays a pivotal role in bone homeostasis through its expression in osteoblasts, and represents a therapeutic target for bone disease.
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Evidence Hub reads this as a review, done in animal and cell cultures (in vitro), not in people. Its evidence level is 5 of 5 (Very low · case / narrative / animal / in vitro / in silico). Case reports, narrative reviews, and animal, cell or computer-model studies give the weakest evidence for human health.
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