{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T19:16:01Z","timestamp":1771528561891,"version":"3.50.1"},"reference-count":43,"publisher":"Public Library of Science (PLoS)","issue":"2","license":[{"start":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T00:00:00Z","timestamp":1771459200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003392","name":"Natural Science Foundation of Fujian Province","doi-asserted-by":"publisher","award":["2024J01664"],"award-info":[{"award-number":["2024J01664"]}],"id":[{"id":"10.13039\/501100003392","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Joint Funds for the Innovation of Science and Technology, Fujian Province","award":["2023Y9233"],"award-info":[{"award-number":["2023Y9233"]}]},{"name":"the Medical Innovation Science and Technology Project of Fujian Province","award":["2024CXB006"],"award-info":[{"award-number":["2024CXB006"]}]},{"name":"the Quanzhou Science and Technology Project","award":["2022C036R"],"award-info":[{"award-number":["2022C036R"]}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:sec id=\"sec001\">\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Sepsis-associated liver injury (SLI) increases the risk of death in septic patients, and a primary pathological alteration in sepsis is ferroptosis in the liver. However, the specific mechanism of its occurrence remains largely unclear. Our work is to validate key pathways connected with ferroptosis in SLI and elucidate potential pharmaceutical targets involved in this process.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec002\">\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>To confirm targets related to SLI, we screened three SLI microarray datasets (GSE23767, GSE40180 and GSE104342) from the GEO database and obtained the ferroptosis-related differentially expressed genes (FRDEGs). A functional enrichment analysis of FRDEGs was performed. The protein\u2013protein interaction network was used to visualize the interactive relationship of FRDEGs. Additionally, the potential biological functions and enrichment pathways of FRDEGs were elucidated through GO and KEGG analysis. Furthermore, we obtained the single-cell dataset (GSE238000) from liver tissue from GEO database to determine the series of cell subtype mainly expressing target molecules. Finally, we performed a serial of in vivo and in vitro experiments to further validate the findings of bioinformatic analysis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec003\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>A total of 51 genes that are expressed differently in SLI involve ferroptosis. These genes are involved in negative regulation of apoptotic process, the endoplasmic reticulum, and identical protein binding. The KEGG pathway study revealed that they were mainly involved in the PPAR signaling pathway. Among three isoforms of PPAR family, PPAR\u03b1 is most abundant in the liver. We then observed that it was significantly downregulated in hepatic tissue of SLI mice and PPAR\u03b1 agonist WY-14643 effectively blocked sepsis-induced hepatic ferroptosis. Subsequently, single-cell analysis demonstrated that PPAR\u03b1 is predominantly expressed in hepatocytes, which was downregulated in LPS-treated THLE-2 cells. Notably, consistent with the in vivo results, PPAR\u03b1 activator WY-14643 also significantly alleviated LPS-induced ferroptosis in THLE-2 cells.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec004\">\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The validation of ferroptosis-related pathway PPAR\u03b1 in this study greatly deepens our understanding of the potential mechanism of SLI, and provide promising therapeutic targets for the disease.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1371\/journal.pone.0338591","type":"journal-article","created":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T18:26:15Z","timestamp":1771525575000},"page":"e0338591","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":0,"title":["Multi-omics analysis identifies PPAR\u03b1 as a key inhibitor of hepatocyte ferroptosis in sepsis-associated liver 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