Transcriptomics

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RNF40 exerts stage-dependent functions in differentiating osteoblasts and is essential for bone cell crosstalk [RNA-seq]


ABSTRACT: In this study, we focused on elucidating the role of Ring Finger Protein 40 (RNF40) in bone development by using a conditional knockout mouse approach during different stages of osteoblast (OB) differentiation and maturation. RNF40 forms an obligate E3 ubiquitin ligase complex together with RNF20 and mediates the monoubiquitination of lysine 120 of histone H2B (H2BK120ub1). We provide evidence that RNF40 regulates OB differentiation in a stage-dependent manner. Additionally, we show that RNF40 is required for bone cell crosstalk whereby loss of RNF40 leads to a reduction in osteoclast numbers and function through modulation of vitamin D receptor (VDR)-induced Rankl expression in OBs. Taken together, these data imply an important role of RNF40-mediated H2Bub1 in bone formation and remodeling and provide a basis for further investigation of its anti-resorptive potential for the treatment of conditions such as osteoporosis or cancer-associated osteolysis. In this study we show that RNF40 is required in earlier stages of osteoblast differentiation and is involved in bone cell crosstalk by regulating vitamin D induced Rankl expression

ORGANISM(S): Mus musculus

PROVIDER: GSE135628 | GEO | 2021/02/24

REPOSITORIES: GEO

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