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Updated: Nov 3, 2025
A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders
Published on: June 8, 2014
A functional motif of long noncoding RNA Nron against osteoporosis
Fujun Jin1,2, Junhui Li3, Yong-Biao Zhang2
1Clinical Research Platform for Interdiscipline of Stomatology, The First Affiliated Hospital of Jinan University & Department of Stomatology, College of stomatology, Jinan University, Guangzhou, China.
Abstract:
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.
Insights
Long noncoding RNA Nron suppresses bone resorption. A specific Nron motif delivered to osteoclasts reverses bone loss without side effects, offering a potential therapeutic strategy for bone diseases.
Area of Science:
- Molecular Biology
- Genetics
- Bone Biology
Background:
- Long noncoding RNAs (lncRNAs) play roles in various diseases.
- The function of lncRNAs in bone resorption is not well understood.
Purpose of the Study:
- To investigate the role of lncRNA Nron in regulating bone resorption.
- To explore the therapeutic potential of Nron and its functional motif.
Main Methods:
- Generated osteoclastic Nron knockout and transgenic mice.
- Administered pharmacological Nron overexpression and Nron functional motif delivery.
- Analyzed bone resorption activity and bone mass.
- Investigated the molecular mechanism involving CUL4B and ERα.
Main Results:
- Nron knockout mice showed increased bone resorption and osteopenia.
- Nron transgenic mice exhibited decreased bone resorption and increased bone mass.
- Nron functional motif delivery reversed bone loss without significant side effects.
- Nron motif interacts with CUL4B to regulate ERα stability.
Conclusions:
- lncRNA Nron is a critical suppressor of bone resorption.
- The Nron functional motif is a promising therapeutic agent for bone loss diseases with reduced side effects.
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