[Nutrigenomics--bioactive dietary components].

Area of Science:

• Nutrigenomics and molecular nutrition.
• Gene-diet interactions and epigenetics.

Background:

• Nutrigenomics investigates the complex relationship between diet, genes, and health outcomes, including noncommunicable diseases.
• Bioactive dietary components function as signaling molecules that modulate gene expression, influencing physiological processes.
• Gene polymorphisms can alter nutrient metabolism and the body's physiological responses to dietary intake.

Purpose of the Study:

• To elucidate the mechanisms by which bioactive dietary components influence gene expression.
• To highlight the role of diet in epigenetic modifications, such as DNA methylation.
• To identify key nuclear receptors and metabolic pathways affected by dietary factors.

Main Methods:

• Analysis of gene expression regulation by bioactive dietary components at the chromatin and nuclear receptor levels.
• Investigation of the role of vitamins, macro- and micro-elements in DNA synthesis and repair.
• Examination of how diet, gene polymorphisms, and environmental factors impact DNA methylation profiles.

Main Results:

• Bioactive dietary components regulate gene expression by modifying chromatin structure and acting as ligands for nuclear receptors.
• Vitamins and minerals are crucial for DNA replication, repair, and methylation processes.
• Dietary intake can alter DNA methylation patterns, influenced by genetic variations and environmental exposures.
• Specific nuclear receptors, including PPAR, LXR, FXR, and RXR, are sensitive to dietary components and regulate metabolism.

Conclusions:

• Diet significantly impacts gene expression and epigenetic modifications through bioactive components and essential nutrients.
• Understanding these gene-diet interactions is key to preventing diet-related diseases.
• Targeting nutrient-sensitive nuclear receptors offers potential therapeutic strategies for metabolic disorders.