Adipose-derived autotaxin regulates inflammation and steatosis associated with diet-induced obesity

PLoS One. 2019 Feb 7;14(2):e0208099. doi: 10.1371/journal.pone.0208099. eCollection 2019.


Autotaxin (ATX) is a secreted enzyme that generates the bioactive lipid lysophosphatidic acid (LPA). We generated mice with global inducible post-natal inactivation or adipose-specific loss of the Enpp2 gene encoding ATX. The animals are phenotypically unremarkable and exhibit differences in adipocyte size and adipose tissue expression of inflammatory genes after high fat feeding without gross differences in fat distribution or body mass. Surprisingly, both models of Enpp2- deficiency exhibited marked protection from high fat diet-induced hepatic steatosis. This phenotype was not associated with differences in dietary fat absorption but may be accounted for by differences in hepatic expression of genes involved in de novo synthesis of triglycerides. These findings suggest that pharmacological inhibition of ATX might be protective against hepatic steatosis.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Adipocytes / metabolism*
  • Adipose Tissue / metabolism
  • Adiposity / physiology
  • Animals
  • Diet, High-Fat / adverse effects*
  • Dietary Fats / metabolism
  • Inflammation / metabolism*
  • Lysophospholipids / metabolism
  • Mice
  • Mice, Inbred C57BL
  • Obesity / metabolism*
  • Phosphoric Diester Hydrolases / metabolism*
  • Triglycerides / metabolism


  • Dietary Fats
  • Lysophospholipids
  • Triglycerides
  • Phosphoric Diester Hydrolases
  • alkylglycerophosphoethanolamine phosphodiesterase
  • lysophosphatidic acid