4.7 Article

Modulation of the Gut Microbiota during High-Dose Glycerol Monolaurate-Mediated Amelioration of Obesity in Mice Fed a High-Fat Diet

Journal

MBIO
Volume 11, Issue 2, Pages -

Publisher

AMER SOC MICROBIOLOGY
DOI: 10.1128/mBio.00190-20

Keywords

glycerol monolaurate; obesity; gut microbiota; serum metabolome; hepatic transcriptome

Categories

Funding

  1. Natural Science Foundation of Zhejiang Province [LD19C200001, LY18C200006, LQ19C200005]
  2. National Natural Science Foundation of China [31601561]
  3. Technology and Achievement Transformation Project of Hangzhou, China [20161631E01]
  4. Zhejiang University New Rural Development Research Institute Agricultural Technology Promotion Fund [2017006]

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Obesity and associated metabolic disorders are worldwide public health issues. The gut microbiota plays a key role in the pathophysiology of diet-induced obesity. Glycerol monolaurate (GML) is a widely consumed food emulsifier with antibacterial properties. Here, we explore the anti-obesity effect of GML (1,600 mg/kg of body weight) in high-fat diet (HFD)-fed mice. HFD-fed mice were treated with 1,600 mg/kg GML. Integrated microbiome, metabolome, and transcriptome analyses were used to systematically investigate the metabolic effects of GML, and antibiotic treatment was used to assess the effects of GML on the gut microbiota. Our data indicated that GML significantly reduced body weight and visceral fat deposition, improved hyperlipidemia and hepatic lipid metabolism, and ameliorated glucose homeostasis and inflammation in HFD-fed mice. Importantly, GML modulated HFDinduced gut microbiota dysbiosis and selectively increased the abundance of Bifidobacterium pseudolongurn. Antibiotic treatment abolished all the GML-mediated metabolic improvements. A multiomics (microbiome, metabolome, and transcriptome) association study showed that GML significantly modulated glycerophospholipid metabolism, and the abundance of Bifidobacterium pseudolongum strongly correlated with the metabolites and genes that participated in glycerophospholipid metabolism. Our results indicated that GML may be provided for obesity prevention by targeting the gut microbiota and regulating glycerophospholipid metabolism.

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