(J Xu and Z Tian contributed equally to this work)
Fragility fractures are frequently observed among the elderly population with osteoporosis, and the fundamental process of fracture recovery relies on the differentiation of osteoblasts. LINC01094 was a crucial lncRNA in the regulation of the progression of diseases, but its role in osteoporotic fracture remained unclear. This study was to investigate alterations in the expression of LINC01094 in patients with osteoporotic fractures, evaluate its potential role as a diagnostic biomarker, and explore its effects on osteoblast differentiation. Circulating LINC01094 was tested using serum from 60 healthy individuals, 60 patients with osteoporosis, and 74 patients with osteoporotic fractures by RT-qPCR. The receiver operating characteristic curve was conducted to evaluate its diagnostic performance. The function of LINC01094 was measured in both MC3T3-E1 and BMSC cells. ALP activity detection and ELISA assay were performed to measure the osteogenesis markers, including OCN and Runx2 expression. A dual-luciferase reporter assay was utilized to validate the downstream miR-362-3p of LINC01094 in cells. The expression of circulating LINC01094 was increased in osteoporotic patients with/without fractures than in healthy controls. LINC01094 can differentiate osteoporotic patients from healthy ones and distinguish osteoporotic fracture patients from those without fractures. LINC01094 levels were decreased in osteogenically induced MC3T3-E1 and BMSC cells. miR-362-3p was a direct target of LINC01094, and miR-362-3p partially reversed the effect of LINC01094 in cell viability and differentiation processes. Silencing LINC01094 is crucial for facilitating bone formation and has the potential to serve as both a diagnostic indicator and a treatment target for osteoporosis.
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