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Acute lung injury (ALI) induced by bacteria lipopolysaccharide (LPS) is characterized by the upregulation of the apoptosis rate of tissue cells and aggravation of inflammatory response. Although many studies have focused on the pathogenesis of this disease, its mechanism remains unknown. This study examined the regulatory role of long non-coding RNA (lncRNA) LINC01194 in the progression of ALI through various bioinformatics analyses and experimental work, including ELISA assay, dual-luciferase reporter assay, biotinylated RNA pull-down assay, and Western blot analysis. The result showed that the LINC01194 was overexpressed in the ALI-induced mice model. We observed a significant upregulation of LINC01194 in LPS-treated mouse lung epithelial type II cells (MLE-12 cells) after 24 h of induction. Bioinformatics analysis, ELISA assay, quantitative reverse transcription polymerase chain reaction analysis, biotinylated RNA pull-down assay, apoptosis test, and Western blot analysis demonstrated that the LINC01194 could act as a microRNA (miR) miR-203a-3p sponge to activate the inflammatory response in LPS-induced ALI model through post-transcriptional upregulation of macrophage inflammatory protein (MIP-2). We showed that LINC01194 regulates the inflammatory response and apoptosis of LPS-induced mice and MLE-12 cells via the miR-203a-3p/MIP-2 axis. LINC01194 could be a potential biomarker for early diagnosis and the treatment of ALI.

canadian journal of physiology and pharmacology

Long non-coding RNA LINC01194 promotes the inflammatory response and apoptosis of lipopolysaccharide-treated MLE-12 cells through the miR-203a-3p/MIP-2 axis