Genetics of sexually dimorphic adipose distribution in humans

Nat Genet. 2023 Mar;55(3):461-470. doi: 10.1038/s41588-023-01306-0. Epub 2023 Feb 16.

Abstract

Obesity-associated morbidity is exacerbated by abdominal obesity, which can be measured as the waist-to-hip ratio adjusted for the body mass index (WHRadjBMI). Here we identify genes associated with obesity and WHRadjBMI and characterize allele-sensitive enhancers that are predicted to regulate WHRadjBMI genes in women. We found that several waist-to-hip ratio-associated variants map within primate-specific Alu retrotransposons harboring a DNA motif associated with adipocyte differentiation. This suggests that a genetic component of adipose distribution in humans may involve co-option of retrotransposons as adipose enhancers. We evaluated the role of the strongest female WHRadjBMI-associated gene, SNX10, in adipose biology. We determined that it is required for human adipocyte differentiation and function and participates in diet-induced adipose expansion in female mice, but not males. Our data identify genes and regulatory mechanisms that underlie female-specific adipose distribution and mediate metabolic dysfunction in women.

Publication types

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

MeSH terms

  • Adipose Tissue / metabolism
  • Adiposity / genetics
  • Animals
  • Body Mass Index
  • Female
  • Humans
  • Mice
  • Obesity* / genetics
  • Obesity* / metabolism
  • Retroelements*
  • Sorting Nexins / genetics
  • Sorting Nexins / metabolism
  • Waist-Hip Ratio

Substances

  • Retroelements
  • SNX10 protein, human
  • Sorting Nexins
  • SNX10 protein, mouse