A functional motif of long noncoding RNA Nron against osteoporosis.

A functional motif of long noncoding RNA Nron against osteoporosis.
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长非编码 RNA Nron 抗骨质疏松症的功能基序。

DOI:
10.1038/s41467-021-23642-7
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发表时间:
2021-06-03
影响因子:
16.6
通讯作者:
Wang X
Wang X
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Jin F;Li J;Zhang YB;Liu X;Cai M;Liu M;Li M;Ma C;Yue R;Zhu Y;Lai R;Wang Z;Ji X;Wei H;Dong J;Liu Z;Wang Y;Sun Y;Wang X

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长链非编码RNA广泛参与多种疾病过程。然而,它们在骨吸收中的调节作用尚不明确。在这里,我们确定lncRNA Nron作为骨吸收的关键抑制因子。我们证明,骨钙素Nron基因敲除小鼠表现出骨质减少表型与骨吸收活性升高。相反,骨钙素Nron转基因小鼠表现出较低的骨吸收和较高的骨量。此外,Nron的药理学过表达抑制了骨吸收,同时在小鼠中引起了明显的副作用。为了最大限度地减少副作用,我们进一步确定了Nron的功能基序。将Nron功能基序递送到破骨细胞有效地逆转骨丢失,而没有明显的副作用。在机制上,Nron的功能基序与E3泛素连接酶CUL4B相互作用以调节ERα稳定性。这些结果表明,Nron是一个关键的骨吸收抑制剂,lncRNA功能基序可能被用于治疗疾病,副作用的风险较小。LncRNA与许多疾病的发病机制有关。在这里,作者表明lncRNA Nron抑制骨吸收,并表明Nron功能基序的递送增加骨质疏松症小鼠模型中的骨量。
Long noncoding RNAs are widely implicated in diverse disease processes. Nonetheless, their regulatory roles in bone resorption are undefined. Here, we identify lncRNA Nron as a critical suppressor of bone resorption. We demonstrate that osteoclastic Nron knockout mice exhibit an osteopenia phenotype with elevated bone resorption activity. Conversely, osteoclastic Nron transgenic mice exhibit lower bone resorption and higher bone mass. Furthermore, the pharmacological overexpression of Nron inhibits bone resorption, while caused apparent side effects in mice. To minimize the side effects, we further identify a functional motif of Nron. The delivery of Nron functional motif to osteoclasts effectively reverses bone loss without obvious side effects. Mechanistically, the functional motif of Nron interacts with E3 ubiquitin ligase CUL4B to regulate ERα stability. These results indicate that Nron is a key bone resorption suppressor, and the lncRNA functional motif could potentially be utilized to treat diseases with less risk of side effects. LncRNAs are implicated in the pathogenesis of a number of diseases. Here, the authors show that the lncRNA Nron suppresses bone resorption, and show that delivery of a functional motif of Nron increases bone mass in mouse models of osteoporosis.
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