PMID- 27462273 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20160727 LR - 20200930 IS - 1664-042X (Print) IS - 1664-042X (Electronic) IS - 1664-042X (Linking) VI - 7 DP - 2016 TI - Increased Hepatic Fatty Acids Uptake and Oxidation by LRPPRC-Driven Oxidative Phosphorylation Reduces Blood Lipid Levels. PG - 270 LID - 10.3389/fphys.2016.00270 [doi] LID - 270 AB - Hyperlipidemia is one of the major risk factors of atherosclerosis and other cardiovascular diseases. This study aimed to investigate the impact of leucine rich pentatricopeptide repeat containing protein (LRPPRC)-driven hepatic oxidative phoshorylation on blood lipid levels. The hepatic LRPPRC level was modulated by liver-specific transgenic or adeno-associated virus 8 carried shRNA targeting Lrpprc (aav-shLrpprc). Mice were fed with a high fat diet to induce obesity. Gene expression was analyzed by quantitative real-time PCR and / or western blot. The hepatic ATP level, hepatic and serum lipids contents, and mitochondria oxidative phosphorylation (OxPhos) complex activities were measured using specific assay kits. The uptake and oxidation of fatty acid by hepatocytes were assessed using (14)C-palmitate. LRPPRC regulated the expression of genes encoded by mitochondrial genome but not those by nuclear genome involved in mitochondria biogenesis, OxPhos, and lipid metabolism. Increased OxPhos in liver mediated by LRPPRC resulted in the increase of hepatic ATP level. Lrpprc promoted palmitate uptake and oxidation by hypatocytes. The hepatic and serum triglyceride and total cholesterol levels were inversely associated with the hepatic LRPPRC level. These data demonstrated that LRPPRC-driven hepatic OxPhos could promote fatty acids uptake and oxidation by hepatocytes and reduce both hepatic and circulating triglyceride and cholesterol levels. FAU - Lei, Shi AU - Lei S AD - College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang, China. FAU - Sun, Run-Zhu AU - Sun RZ AD - Department of Psychiatry, Xijing Hospital, Fourth Military Medical University Xi'an, China. FAU - Wang, Di AU - Wang D AD - Department of Laboratory Medicine, Huashan Hospital North, Shanghai Medical School, Fudan University Shanghai, China. FAU - Gong, Mei-Zhen AU - Gong MZ AD - College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang, China. FAU - Su, Xiang-Ping AU - Su XP AD - College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang, China. FAU - Yi, Fei AU - Yi F AD - College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang, China. FAU - Peng, Zheng-Wu AU - Peng ZW AD - Department of Psychiatry, Xijing Hospital, Fourth Military Medical University Xi'an, China. LA - eng PT - Journal Article DEP - 20160712 PL - Switzerland TA - Front Physiol JT - Frontiers in physiology JID - 101549006 PMC - PMC4941416 OTO - NOTNLM OT - LRPPRC OT - fatty acids OT - mitochondria OT - oxidative phosphorylation OT - triglyceride EDAT- 2016/07/28 06:00 MHDA- 2016/07/28 06:01 PMCR- 2016/07/12 CRDT- 2016/07/28 06:00 PHST- 2016/02/27 00:00 [received] PHST- 2016/06/16 00:00 [accepted] PHST- 2016/07/28 06:00 [entrez] PHST- 2016/07/28 06:00 [pubmed] PHST- 2016/07/28 06:01 [medline] PHST- 2016/07/12 00:00 [pmc-release] AID - 10.3389/fphys.2016.00270 [doi] PST - epublish SO - Front Physiol. 2016 Jul 12;7:270. doi: 10.3389/fphys.2016.00270. eCollection 2016.