PMID- 38238472 OWN - NLM STAT- MEDLINE DCOM- 20240201 LR - 20240201 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 14 IP - 1 DP - 2024 Jan 18 TI - CPT1A as a potential therapeutic target for lipopolysaccharide-induced acute lung injury in mice. PG - 1600 LID - 10.1038/s41598-024-52042-2 [doi] LID - 1600 AB - Acute lung injury (ALI) remains a high mortality rate with dramatic lung inflammation and alveolar epithelial cell death. Although fatty acid beta-oxidation (FAO) impairment has been implicated in the pathogenesis of ALI, whether Carnitine palmitoyltransferase 1A (CPT1A), the rate-limiting enzyme for FAO, plays roles in lipopolysaccharide (LPS)-induced ALI remains unclear. Accordingly, we focused on exploring the effect of CPT1A in the context of ALI and the underlying mechanisms. We found that overexpression of CPT1A (AAV-CPT1A) effectively alleviated lung injury by reduction of lung wet-to-dry ratio, inflammatory cell infiltration, and protein levels in the BALF of ALI mice. Meanwhile, AAV-CPT1A significantly lessened histopathological changes and several cytokines' secretions. In contrast, blocking CPT1A with etomoxir augmented inflammatory responses and lung injury in ALI mice. Furthermore, we found that overexpression of CPT1A with lentivirus reduced the apoptosis rates of alveolar epithelial cells and the expression of apoptosis-related proteins induced by LPS in MLE12 cells, while etomoxir increased the apoptosis of MLE12 cells. Overexpression of CPT1A prevented the drop in bioenergetics, palmitate oxidation, and ATP levels. In conclusion, the results rendered CPT1A worthy of further development into a pharmaceutical drug for the treatment of ALI. CI - (c) 2024. The Author(s). FAU - Wang, Gui-Yun AU - Wang GY AD - Shandong Xiehe University, Jinan, 250109, Shandong, China. FAU - Xu, Xia AU - Xu X AD - Shandong Xiehe University, Jinan, 250109, Shandong, China. FAU - Xiong, Da-Yan AU - Xiong DY AD - Xiangya School of Nursing, Central South University, Changsha, 410013, Hunan, China. FAU - Deng, Lang AU - Deng L AD - Xiangya School of Nursing, Central South University, Changsha, 410013, Hunan, China. FAU - Liu, Wei AU - Liu W AD - Xiangya School of Nursing, Central South University, Changsha, 410013, Hunan, China. FAU - Huang, Xiao-Ting AU - Huang XT AD - Xiangya School of Nursing, Central South University, Changsha, 410013, Hunan, China. xiaotinghuang0813@163.com. LA - eng GR - 82100084/National Natural Science Foundation of China/ PT - Journal Article DEP - 20240118 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - EC 2.3.1.21 (Carnitine O-Palmitoyltransferase) RN - 0 (Epoxy Compounds) RN - MSB3DD2XP6 (etomoxir) RN - 0 (Lipopolysaccharides) RN - EC 2.3.1.21 (CPT1B protein, mouse) SB - IM MH - Animals MH - Mice MH - *Acute Lung Injury/chemically induced/drug therapy/genetics MH - Carnitine O-Palmitoyltransferase/genetics/metabolism MH - *Epoxy Compounds MH - *Lipopolysaccharides/metabolism MH - Lung/pathology PMC - PMC10796431 COIS- The authors declare no competing interests. EDAT- 2024/01/19 00:42 MHDA- 2024/01/22 06:42 PMCR- 2024/01/18 CRDT- 2024/01/18 23:23 PHST- 2023/06/28 00:00 [received] PHST- 2024/01/12 00:00 [accepted] PHST- 2024/01/22 06:42 [medline] PHST- 2024/01/19 00:42 [pubmed] PHST- 2024/01/18 23:23 [entrez] PHST- 2024/01/18 00:00 [pmc-release] AID - 10.1038/s41598-024-52042-2 [pii] AID - 52042 [pii] AID - 10.1038/s41598-024-52042-2 [doi] PST - epublish SO - Sci Rep. 2024 Jan 18;14(1):1600. doi: 10.1038/s41598-024-52042-2.