title: Cellular responses to excess fatty acids: focus on ubiquitin regulatory X domain-containing protein 8.
abstract: OBJECTIVE
  Although fatty acids are crucial for cell survival, their overaccumulation triggers lipotoxicity that leads to metabolic syndrome. Thus, cells maintain their homeostasis by multiple feedback regulatory systems. This review focuses on how cells regulate the level of fatty acids by these systems.
  
  
  RESULTS
  Ubiquitin regulatory X domain-containing protein 8 has been identified as a specific sensor for unsaturated fatty acids that regulates lipogenic activity.
  
  
  CONCLUSIONS
  Together with the previously identified peroxisome proliferator-activated receptors and liver X receptor, these proteins sense the presence of unsaturated fatty acids and initiate reactions preventing their overaccumulation. Understanding the mechanism of the signal transduction pathways mediated by these proteins may offer new strategies to treat metabolic syndrome.
authors.affiliation: Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
authors.forename: Hyeonwoo
authors.initials: H
authors.lastname: Kim
authors.forename: Jin
authors.initials: J
authors.lastname: Ye
mesh_terms: D050156:Adipogenesis; D000818:Animals; D001798:Blood Proteins / Q000737:chemistry / Q000378:metabolism*; D005227:Fatty Acids / Q000096:biosynthesis / Q000737:chemistry / Q000378:metabolism*; D006801:Humans; D000071518:Liver X Receptors; D008565:Membrane Proteins / Q000737:chemistry / Q000378:metabolism*; D057093:Orphan Nuclear Receptors / Q000378:metabolism; D010084:Oxidation-Reduction; D047492:Peroxisome Proliferator-Activated Receptors / Q000378:metabolism
chemical_list: D001798:Blood Proteins; C468782:FAF2 protein, human; D005227:Fatty Acids; D000071518:Liver X Receptors; D008565:Membrane Proteins; D057093:Orphan Nuclear Receptors; D047492:Peroxisome Proliferator-Activated Receptors