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Microarray analysis of tRNA-derived small RNA (tsRNA) in LPS-challenged macrophages treated with metformin
Huan Lin1, Hongao Deng1, Zhengying Jiang1
1Medical center of Burn plastic and wound repair, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China.
Gene
|March 22, 2024
Summary
Metformin reduces inflammation in macrophages by altering tRNA-derived small RNA (tsRNA) abundance. This study identifies specific tsRNAs modulated by metformin, suggesting their potential as biomarkers for inflammatory conditions.
Area of Science:
- Molecular Biology
- Immunology
- Pharmacology
Background:
- Metformin, an anti-diabetic drug, shows anti-inflammatory properties.
- tRNA-derived small RNAs (tsRNAs) are emerging regulators with diagnostic and therapeutic potential.
Purpose of the Study:
- To investigate metformin's effect on tsRNA abundance in lipopolysaccharide (LPS)-induced inflammation.
- To identify differentially abundant tsRNAs (DA-tsRNAs) and their target genes/pathways.
Main Methods:
- Established an in vitro LPS-induced inflammation model in RAW264.7 macrophages.
- Assessed metformin's protective effects against LPS-induced damage.
- Utilized microarray analysis to identify DA-tsRNAs.
- Performed bioinformatics analysis to predict tsRNA targets and functions.
Main Results:
- Metformin inhibited the inflammatory response in LPS-treated macrophages.
- Microarray analysis identified 247 DA-tsRNAs (58 upregulated, 189 downregulated) in metformin + LPS vs. LPS groups.
- Bioinformatics analysis indicated tsRNA targets are involved in inflammation and immunity.
Conclusions:
- Metformin exerts anti-inflammatory effects by modulating tsRNA abundance in macrophages.
- Identified DA-tsRNAs provide a foundation for using tsRNAs as biomarkers for metformin's anti-inflammatory action.
