[Identification of Food-derived Bioactive Components with Physiological Effects]

Area of Science:

• Nutritional biochemistry
• Molecular biology
• Metabolic research

Background:

• Food-derived components with physiological effects are gaining attention.
• Metabolic syndrome is a growing health concern requiring novel prevention strategies.

Purpose of the Study:

• To identify food components that can prevent or improve metabolic syndrome.
• To investigate the effects of food components on genes regulating lipid metabolism.

Main Methods:

• Luciferase reporter assays were used to assess fatty acid synthase (FAS) and low-density lipoprotein receptor (LDL) gene promoter activity.
• Human hepatoma Huh-7 cells were utilized to study the effects of sulforaphane on sterol regulatory element-binding protein (SREBP) expression.
• Analytical and chemical methods were employed to identify active compounds in cherry peduncle extract.

Main Results:

• The isothiocyanate sulforaphane impaired FAS promoter activity and reduced SREBP target gene expression by promoting SREBP precursor degradation.
• Extract from sweet cherry peduncles, specifically chrysin 7-O-β-D-glucopyranoside, was found to induce LDL receptor gene promoter activity.

Conclusions:

• Sulforaphane and compounds from cherry peduncles demonstrate potential for managing metabolic syndrome through lipid metabolism regulation.
• This research highlights novel functions of food components in altering gene expression related to metabolic health.