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Updated: Jan 15, 2026
Author Spotlight: Comparing Alveolar and Long Bone Remodeling to Explore OTM Model Potential
Published on: July 21, 2023
Mirt2 alleviates LPS-induced inflammation of osteoblasts in alveolar bone destruction
Yajie Wu1, Zhifei Su2, Bowen Zhang3
1State Key Laboratory of Oral Diseases, National Center for Stomatology, and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China.
Objectives:
The long noncoding RNA (lncRNA) myocardial infarction-associated transcript 2 (Mirt2) has been confirmed to affect several inflammatory diseases. This study was conducted to explore the functional mechanism of Mirt2 in inflammatory alveolar bone loss and its possibility of being a therapeutic target.
Design:
The expression level and potential role of Mirt2 in chronic inflammatory alveolar bone loss in mouse models of periodontitis and periapical periodontitis were investigated using micro-CT and qPCR. The characteristics of Mirt2 were evaluated by FISH, qPCR, ELISA, and alkaline phosphatase staining to confirm its function and mechanism of action in inflammatory response.
Results:
Mirt2 expression was significantly enriched in inflammatory alveolar bone diseases. Mirt2 expression increased upon LPS stimulation in MC3T3-E1 cells (P < 0.05), located at the cell cytoplasm. Mirt2 knockdown exacerbated the LPS-stimulated inflammatory response in MC3T3-E1 cells, whereas Mirt2 overexpression attenuated this effect and rescued LPS-impaired osteogenic differentiation.
Conclusions:
lncRNA Mirt2 suggests a potential role in chronic inflammation-related bone loss, providing potential therapeutic target worthy of future investigation for inflammation-related bone loss.
Insights
Long noncoding RNA Mirt2 plays a key role in inflammatory bone loss. Mirt2 may be a potential therapeutic target for treating chronic inflammation-related bone loss diseases.
Area of Science:
- Molecular Biology
- Genetics
- Immunology
Background:
- Long noncoding RNAs (lncRNAs) are involved in various inflammatory diseases.
- Myocardial infarction-associated transcript 2 (Mirt2) is an lncRNA with a known role in inflammation.
- Inflammatory alveolar bone loss is a significant clinical concern.
Purpose of the Study:
- To investigate the functional mechanism of Mirt2 in inflammatory alveolar bone loss.
- To explore Mirt2 as a potential therapeutic target for inflammation-related bone loss.
Main Methods:
- Utilized mouse models of periodontitis and periapical periodontitis.
- Employed micro-CT and quantitative PCR (qPCR) to assess Mirt2 expression and role.
- Conducted fluorescence in situ hybridization (FISH), ELISA, and alkaline phosphatase staining to confirm Mirt2 function.
Main Results:
- Mirt2 expression was significantly elevated in inflammatory alveolar bone diseases.
- LPS stimulation increased Mirt2 expression in MC3T3-E1 cells, with Mirt2 localized in the cytoplasm.
- Mirt2 knockdown worsened LPS-induced inflammation, while Mirt2 overexpression attenuated inflammation and improved osteogenic differentiation.
Conclusions:
- lncRNA Mirt2 demonstrates a significant role in chronic inflammation-associated bone loss.
- Mirt2 presents a promising therapeutic target for future investigations into treating inflammation-related bone loss.
