Oxyresveratrol Increases Energy Expenditure through Foxo3a-Mediated Ucp1 Induction in High-Fat-Diet-Induced Obese...

Area of Science:

• Biochemistry
• Metabolic Research
• Nutraceutical Science

Background:

• Phytochemical oxyresveratrol exhibits anti-obesity properties, but its precise mechanism remains unclear.
• Understanding oxyresveratrol's action is crucial for developing effective obesity interventions.

Purpose of the Study:

• To investigate the anti-obesity effects and underlying mechanisms of oxyresveratrol in cellular and animal models.
• To identify molecular targets involved in oxyresveratrol's metabolic regulation.

Main Methods:

• Assessing oxyresveratrol's impact on adipocyte differentiation and lipid accumulation in 3T3-L1 and C3H10T1/2 cells.
• Evaluating oxyresveratrol's effects on body weight, adipose tissue, lipid profiles, and glucose tolerance in high-fat diet (HFD)-induced obese mice.
• Analyzing gene expression related to thermogenesis and adipocyte differentiation, and investigating the role of Foxo3a.

Main Results:

• Oxyresveratrol inhibited lipid accumulation and adipocyte differentiation markers in vitro.
• In HFD-fed mice, oxyresveratrol reduced body weight gain, adipose tissue mass, improved lipid profiles, and enhanced glucose tolerance.
• These benefits were associated with increased energy expenditure, elevated rectal temperature, induction of thermogenic genes (e.g., Ucp1), and suppression of white adipocyte genes, mediated partly by Foxo3a.

Conclusions:

• Oxyresveratrol promotes weight loss and metabolic improvements by increasing energy expenditure via thermogenesis in adipose tissue.
• Foxo3a is identified as a key mediator of oxyresveratrol's anti-obesity effects.
• Oxyresveratrol shows promise as a functional food ingredient, with Foxo3a as a potential molecular target for obesity and metabolic disease management.