PMID- 23533380 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20130328 LR - 20211021 IS - 1687-4757 (Print) IS - 1687-4765 (Electronic) VI - 2013 DP - 2013 TI - Inhibitors of Fatty Acid Synthesis Induce PPAR alpha -Regulated Fatty Acid beta -Oxidative Genes: Synergistic Roles of L-FABP and Glucose. PG - 865604 LID - 10.1155/2013/865604 [doi] LID - 865604 AB - While TOFA (acetyl CoA carboxylase inhibitor) and C75 (fatty acid synthase inhibitor) prevent lipid accumulation by inhibiting fatty acid synthesis, the mechanism of action is not simply accounted for by inhibition of the enzymes alone. Liver fatty acid binding protein (L-FABP), a mediator of long chain fatty acid signaling to peroxisome proliferator-activated receptor- alpha (PPAR alpha ) in the nucleus, was found to bind TOFA and its activated CoA thioester, TOFyl-CoA, with high affinity while binding C75 and C75-CoA with lower affinity. Binding of TOFA and C75-CoA significantly altered L-FABP secondary structure. High (20 mM) but not physiological (6 mM) glucose conferred on both TOFA and C75 the ability to induce PPAR alpha transcription of the fatty acid beta -oxidative enzymes CPT1A, CPT2, and ACOX1 in cultured primary hepatocytes from wild-type (WT) mice. However, L-FABP gene ablation abolished the effects of TOFA and C75 in the context of high glucose. These effects were not associated with an increased cellular level of unesterified fatty acids but rather by increased intracellular glucose. These findings suggested that L-FABP may function as an intracellular fatty acid synthesis inhibitor binding protein facilitating TOFA and C75-mediated induction of PPAR alpha in the context of high glucose at levels similar to those in uncontrolled diabetes. FAU - Huang, Huan AU - Huang H AD - Department of Physiology and Pharmacology, Texas A&M University, TAMU 4466, College Station, TX 77843-4466, USA. FAU - McIntosh, Avery L AU - McIntosh AL FAU - Martin, Gregory G AU - Martin GG FAU - Petrescu, Anca D AU - Petrescu AD FAU - Landrock, Kerstin K AU - Landrock KK FAU - Landrock, Danilo AU - Landrock D FAU - Kier, Ann B AU - Kier AB FAU - Schroeder, Friedhelm AU - Schroeder F LA - eng GR - R01 DK041402/DK/NIDDK NIH HHS/United States PT - Journal Article DEP - 20130226 PL - United States TA - PPAR Res JT - PPAR research JID - 101269101 PMC - PMC3600304 EDAT- 2013/03/28 06:00 MHDA- 2013/03/28 06:01 PMCR- 2013/02/26 CRDT- 2013/03/28 06:00 PHST- 2012/11/13 00:00 [received] PHST- 2012/12/21 00:00 [accepted] PHST- 2013/03/28 06:00 [entrez] PHST- 2013/03/28 06:00 [pubmed] PHST- 2013/03/28 06:01 [medline] PHST- 2013/02/26 00:00 [pmc-release] AID - 10.1155/2013/865604 [doi] PST - ppublish SO - PPAR Res. 2013;2013:865604. doi: 10.1155/2013/865604. Epub 2013 Feb 26.