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Yang, Lei; Li, Yuan; Gong, Rui; Gao, Manqi; Feng, Chao; Liu, Tianyi; Sun, Yi; Jin, Mengyu; Wang, Dawei; Yuan, Ye; Yan, Gege; He, Mingyu; Idiiatullina, Elina; Ma, Wenya; Han, Zhenbo; Zhang, Lai; Huang, Qi; Ding, Fengzhi; Cai, Benzhi; Yang, Fan
Molecular therapy, 02/2019, Letnik: 27, Številka: 2Journal Article
Bone marrow-derived mesenchymal stem cells (BMSCs) have the potential to differentiate into osteoblasts or adipocytes, and the shift between osteogenic and adipogenic differentiation determines bone mass. The aim of this study was to identify whether lncRNAs are involved in the differentiation commitment of BMSCs during osteoporosis. Here, we found ORLNC1, a functionally undefined lncRNA that is highly conserved, which exhibited markedly higher expression levels in BMSCs, bone tissue, and the serum of OVX-induced osteoporotic mice than sham-operated counterparts. Notably, a similar higher abundance of lncRNA-ORLNC1 expression was also observed in the bone tissue of osteoporotic patients. The transgenic mice overexpressing lncRNA-ORLNC1 showed a substantial increase in the osteoporosis-associated bone loss and decline in the osteogenesis of BMSCs. The BMSCs pretreated with lncRNA-ORLNC1-overexpressing lentivirus vector exhibited the suppressed capacity of osteogenic differentiation and oppositely enhanced adipogenic differentiation. We then established that lncRNA-ORLNC1 acted as a competitive endogenous RNA (ceRNA) for miR-296. Moreover, miR-296 was found markedly upregulated during osteoblast differentiation, and it accelerated osteogenic differentiation by targeting Pten. Taken together, our results indicated that the lncRNA-ORLNC1-miR-296-Pten axis may be a critical regulator of the osteoporosis-related switch between osteogenesis and adipogenesis of BMSCs and might represent a plausible therapeutic target for improving osteoporotic bone loss. BMSCs have the potential of multi-lineage differentiation. The imbalance between osteogenesis and adipogenesis of BMSCs is associated with osteoporosis. Yang et al. first demonstrate that lncRNA-ORLNC1 upregulation led to the inhibition of osteogenesis and enhancement of adipogenesis of BMSCs. Thus, ORLNC1 is suggested as a new target for treating osteoporosis.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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