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Long non-coding RNA expression in silicosis and MRAK050699 function in epithelial-mesenchymal transition
Fa-Xuan Wang1, Fang-Yu Gao2, Xuan Liu1
1School of Public Health and Management, 105002Ningxia Medical University, Yinchuan, China; Key Laboratory of Environmental Factors and Chronic Disease Control, No.1160, Shengli Street, Xingqing District, Yinchuan, Ningxia, China.
Human & Experimental Toxicology
|November 15, 2021
Summary
This study reveals that long non-coding RNAs (lncRNAs) are differentially expressed in silicosis. Specifically, MRAK050699 inhibits epithelial-mesenchymal transition (EMT) by regulating the TGF-β/Smad3 pathway, suggesting it as a potential therapeutic target for silicosis.
Area of Science:
- Pulmonary Medicine
- Molecular Biology
- Genetics
Background:
- Silicosis is a fibrotic lung disease from chronic silica exposure.
- Long non-coding RNAs (lncRNAs) are implicated in fibrotic diseases, but their role in silicosis is unknown.
- Understanding lncRNA involvement is crucial for developing new silicosis therapies.
Purpose of the Study:
- To investigate lncRNA expression patterns in silicosis.
- To determine the role of the lncRNA MRAK050699 in silicosis pathogenesis.
- To explore the mechanism of MRAK050699 in epithelial-mesenchymal transition (EMT).
Main Methods:
- Differential lncRNA expression analysis in rat silicosis models.
- Gene Ontology and KEGG pathway enrichment analysis.
- Quantitative reverse transcription PCR (qRT-PCR) for lncRNA validation.
- MRAK050699 knockdown in rat alveolar epithelial cells to study TGF-β-induced EMT.
Main Results:
- Identified 1077 differentially expressed lncRNAs in silicosis lung tissues (378 upregulated, 699 downregulated).
- Confirmed upregulation of selected lncRNAs, including MRAK050699, in silicosis rats.
- MRAK050699 knockdown suppressed TGF-β-induced EMT in rat alveolar epithelial cells via the TGF-β/Smad3 pathway.
Conclusions:
- lncRNA expression is significantly altered during silicosis development.
- MRAK050699 plays a critical role in regulating EMT in silicosis.
- MRAK050699 represents a potential therapeutic target for managing silicosis.
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