Cell Reports (Jun 2017)

The TMAO-Producing Enzyme Flavin-Containing Monooxygenase 3 Regulates Obesity and the Beiging of White Adipose Tissue

  • Rebecca C. Schugar,
  • Diana M. Shih,
  • Manya Warrier,
  • Robert N. Helsley,
  • Amy Burrows,
  • Daniel Ferguson,
  • Amanda L. Brown,
  • Anthony D. Gromovsky,
  • Markus Heine,
  • Arunachal Chatterjee,
  • Lin Li,
  • Xinmin S. Li,
  • Zeneng Wang,
  • Belinda Willard,
  • YongHong Meng,
  • Hanjun Kim,
  • Nam Che,
  • Calvin Pan,
  • Richard G. Lee,
  • Rosanne M. Crooke,
  • Mark J. Graham,
  • Richard E. Morton,
  • Carl D. Langefeld,
  • Swapan K. Das,
  • Lawrence L. Rudel,
  • Nizar Zein,
  • Arthur J. McCullough,
  • Srinivasan Dasarathy,
  • W.H. Wilson Tang,
  • Bernadette O. Erokwu,
  • Chris A. Flask,
  • Markku Laakso,
  • Mete Civelek,
  • Sathyamangla V. Naga Prasad,
  • Joerg Heeren,
  • Aldons J. Lusis,
  • Stanley L. Hazen,
  • J. Mark Brown

Journal volume & issue
Vol. 19, no. 12
pp. 2451 – 2461

Abstract

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Summary: Emerging evidence suggests that microbes resident in the human intestine represent a key environmental factor contributing to obesity-associated disorders. Here, we demonstrate that the gut microbiota-initiated trimethylamine N-oxide (TMAO)-generating pathway is linked to obesity and energy metabolism. In multiple clinical cohorts, systemic levels of TMAO were observed to strongly associate with type 2 diabetes. In addition, circulating TMAO levels were associated with obesity traits in the different inbred strains represented in the Hybrid Mouse Diversity Panel. Further, antisense oligonucleotide-mediated knockdown or genetic deletion of the TMAO-producing enzyme flavin-containing monooxygenase 3 (FMO3) conferred protection against obesity in mice. Complimentary mouse and human studies indicate a negative regulatory role for FMO3 in the beiging of white adipose tissue. Collectively, our studies reveal a link between the TMAO-producing enzyme FMO3 and obesity and the beiging of white adipose tissue. : Microbes resident in the human intestine represent a key transmissible environmental factor contributing to obesity and related disorders. Schugar et al. now show that expression of the TMAO-producing enzyme FMO3 is linked to obesity and energy expenditure in both mice and humans. Keywords: microbiota, nutrition, obesity, diabetes, adipose, flavin-containing monooxygenase 3, FMO3